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SC4850E-ZYTV100R001
User manual
Issue 01
Date 2012-02-15
HUAWEI TECHNOLOGIES CO., LTD.
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Issue 01 (2012-02-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
i
Copyright © Huawei Technologies Co., Ltd. 2012. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees orrepresentations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute the warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: [email protected]
http://www.huawei.com/mailto:[email protected]:[email protected]://www.huawei.com/
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SC4850E-ZYT
User manual About This Document
Issue 01 (2012-02-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
ii
About This Document
PurposeThis document describes the SC4850E-ZYT solar controller in terms of its main functions,
appearance, application scenarios, configurations, port description, installation,
commissioning, and maintenance.
Intended Audience
This document is intended for:
Technical support engineers
Maintenance engineers
Test engineers
Symbol ConventionsThe symbols that may be found in this document are defined as follows.
Symbol Description
Alerts you to a high risk hazard that could, if not avoided,
result in serious injury or death.
Alerts you to a medium or low risk hazard that could, if notavoided, result in moderate or minor injury.
Alerts you to a potentially hazardous situation that could, if not
avoided, result in equipment damage, data loss, performancedeterioration, or unanticipated results.
Provides a tip that may help you solve a problem or save time.
Provides additional information to emphasize or supplementimportant points in the main text.
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SC4850E-ZYT
User manual About This Document
Issue 01 (2012-02-15) Huawei Proprietary and Confidential
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iii
Change History
Changes between document issues are cumulative. The latest document issue contains all the
changes made in earlier issues.
Issue 01 (2012-02-15)
This issue is used for first office application (FOA).
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SC4850E-ZYT
User manual Contents
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iv
Contents
About This Document .................................................................................................................... ii
1 Introduction.................................................................................................................................... 1
1.1 Principles ............................................................ .............................................................. ................................ 1
1.2 Features ............................................................................................................................................................ 2
1.3 Functions ............................................................ .............................................................. ................................ 2
1.4 Technical Parameters ............................................................... ............................................................... .......... 9
2 Installation and commissioning ............................................................................................... 11
2.1 Safety Regulations ......................................................................................................................................... 11
2.2 Installation And Cable Connection ................................................................ ................................................. 11
2.2.1 Installation Preparation ......................................................................................................................... 11
2.2.2 Installing Controller ................................................................................................ .............................. 13
2.2.3 Connecting Cables ................................................................................................................................ 15
2.2.4 Sealing Cable Entry Holes ............................................................................................................ ........ 17
2.3 Commissioning .............................................................................................................................................. 18
2.3.1 Startup Check ................................................................. ............................................................... ........ 18
2.3.2 Power On And Commissioning ............................................................ ................................................. 18
2.4 Final Steps .......................................................... .............................................................. .............................. 20
3 Use of monitoring board ............................................................................................................ 22
3.1 Front Panel ..................................................................................................................................................... 22
3.2 Querying Status ............................................................. .............................................................. ................... 23
3.3 Querying Active Alarm ...................................................................... ............................................................ 25
3.4 Setting Parameters ......................................................... .............................................................. ................... 26
3.5 Maintenance ....................................................... .............................................................. .............................. 29
3.6 Querying History Alarm .......................................................... ............................................................... ........ 30
4 Appendix ...................................................................................................................................... 31
A Acronyms and Abbreviations .................................................................................................. 33
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1 IntroductionThis chapter introduces the principles, features, functions and technical parameters of the
SC4850E-ZYT solar controller (controller for short).
1.1 Principles
The controller is used in the solar energy system for the outdoor wireless communication
stations. The photovoltaic arrays supplies power to the controller. The controller controls the photovoltaic arrays to start working or to stop working, to generate voltage and current to
charge the batteries and supply the load. During nights and cloudy days, the batteries sustainthe load.
The schematic diagram of the solar energy system is shown in Figure 1-1.
Figure 1-1 Schematic diagram of the solar energy system
By controlling the input power panel, the controller stabilizes the battery voltage withina specified range, and determines the battery charge state according to the capacity andvoltage of the battery.
When the battery voltage is too low, the output power panel will disconnect the loads to protect the battery.
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The controller has a monitoring board, which is used to monitor the operation of thecontroller, control each input power panel and output power panel, and carry out batterymanagement.
The monitoring board provides the RS232/RS485 port, alarm dry contact input port,
alarm dry contact output port, battery temperature sensor port and so on.
1.2 Features The large LCD enables you to understand the operation conditions of the controller and
the battery status.
The controller uses PWM mode and ON/OFF mode to control photovoltaic array input,taking full advantage of solar energy input.
The parallel connection two controllers can work together for power supply. The controller has ultra low radiation. The advanced EMC design satisfies IEC61000-4
requirements.
The safety design of the controller is compliant with IEC60950-1 standard.
The controller provides excellent battery management functions, including batteryundervoltage disconnection (BLVD), temperature compensation, and auto voltage
regulation.
The controller has complete protection functions and fault alarm functions.
1.3 FunctionsThe controller has the following functions: array management function, protection function,
measurement function, alarm function, alarm input function, alarm output function, controlfunction, communication function, display function, history data record function and batterymanagement function. The detailed descriptions are given below.
Array management function
The controller uses PWM mode (default) and ON/OFF mode to charge batteries. In PWM
mode, the controller controls the switching of the arrays and takes full advantage of the solar
energy system through high frequency switch according to operation status of the solar
energy system. In ON/OFF mode, the controller performs switching control of the arraysthrough switching on and off of the power module.
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Protection function
Table 1-1 Protection function
Function Description Remark
Inputovercurrent protection
When one photovoltaic panel route hasovercurrent (adjustable, see 3.4 SettingParameters for the setting range), the
controller will carry out current control. If the
current is too large, the corresponding MCBwill trip.
When the fault is clear, thecontroller will resumeautomatically. The
tripping MCB should be
switched on manually.
Output
short-circuit
protection
When one load output is short-circuited, the
corresponding MCB will trip.
The fault must be cleared
before the MCB of a
short-circuited load outputcan close.
Battery
overcurrent protection
In case of battery overcurrent, the
corresponding MCB will trip.
The MCB needs to be
closed manually
Over
temperature protection
When the battery temperature is over 50°C
(adjustable, see 3.4 Setting Parameters), thecontroller will generate an overtemperature
alarm.
When the battery temperature is over 60°C(adjustable, see 3.4 Setting Parameters), the
controller will disconnect the photovoltaic panel input and perform overtemperature protection.
In overtemperature
protection state, the battery will disconnect the
photovoltaic panel,lowering the utility rate insunny days. Therefore the
overtemperature functionis disabled by default.
When the batterytemperature is normal, the
controller will resume
automatically.
Surge
protection
The controller has an internal SPD that can
achieve surge protection. When the SPD isfound faulty, the controller will generate anSPD fault alarm. Compliant with Class C
surge protection standard.
If the SPD is faulty, users
need to replace itmanually.
Measurement function
Table 1-2 Measurement function
Signal Measurement range Accuracy Environmentalrequirement
Open circuit voltage of
photovoltaic panel36 V DC–100 V DC ±0.2 V DC Ambient
temperature:
25°COperating current of
photovoltaic panel0A – 50A ± 0.5A
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Signal Measurement range Accuracy Environmentalrequirement
Busbar/ battery voltage 36 V DC – 60 V DC ±0.2 V DC
Total charge/ discharge current
of the batteries-20A – +50A ± 0.5A
Load current 0A – 20A ± 0.5A
Battery temperature -20° – 80°C ± 3°C
Alarm function
The alarms are displayed on the LCD of the monitoring board, and are indicated by indicators.
The alarms can be set through the monitoring board. The setting method is described in3.4Setting Parameters.
Table 1-3 Alarm function
AlarmName
Alarmlevel
Alarm Symptom AlarmTriggeringCondition
AlarmClearanceCondition
HighVolt
AlarmMinor The yellow indicator
on the LCD turns on,
and the Active Alarmon the LCD shows BattOver Volt
The busbar
voltage is higher
than the batteryovervoltage alarmthreshold
The busbar
voltage is lower
than the batteryovervoltage alarmthreshold
LowVolt
AlarmMinor The yellow indicator
on the LCD turns on,and the Active Alarm
on the LCD showsLowVolt Alarm
The busbar
voltage is lowerthan the battery
undervoltagealarm threshold
The busbar
voltage is higherthan the battery
undervoltagealarm threshold
LVD Critical The red indicator on
the LCD turns on, and
the Active Alarm on
the LCD shows that theLVD Alm
The busbar
voltage is
continuously
lower than theload undervoltage
disconnectionthreshold
The busbar
voltage is higher
than the LVD
threshold
Array
OverVoltMinor The yellow indicator
on the LCD turns on,and the Active Alarmon the LCD showsArray OverVolt
The open circuit
voltage of thearray is higherthan the ArrayOverVolt
threshold
The open circuit
voltage of thearray is lowerthan the ArrayOverVolt
threshold
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AlarmName
Alarmlevel
Alarm Symptom AlarmTriggering
Condition
AlarmClearance
Condition
ArrayOverCurr
Minor The yellow indicatoron the LCD turns on,and the Active Alarm
on the LCD displays
Array OverCurr
The workingcurrent of thearray is higher
than the Array
OverCurrthreshold
The workingcurrent of thearray is lower
than the Array
OverCurrthreshold
Array lost Minor The yellow indicator
on the LCD turns on,
and the Active Alarm
on the LCD displays
Array Lost
After deterring
array lost
Array is
connected
normally
Array
reverseCritical The red indicator on
the LCD turns on, and
the Active Alarm onthe LCD displaysArray reverse
The input
polarities of the
array are reverselyconnected,
The open-circuit
voltage is higher
than 0V
* M1Short Alm
Critical The red indicator onthe LCD turns on, and
the Active Alarm on
the LCD displays thatthe M1 Short Alm
The M1 board isshort circuited
The faulty is clear
* M1
Break
Alm
Critical The red indicator on
the LCD turns on, and
Active Alarm on the
LCD displays that theM1 Break Alm.
The M1 board is
circuit open.The faulty is clear
Batt
Over-tempMinor The yellow indicator
on the LCD turns on,
and the Active Alarm
on the LCD displaysBatt Over-temp
The battery
temperature is
higher than the
batteryovertemperature
alarm threshold
The battery
temperature is
lower than battery
over-temperaturealarm threshold
(5°C)
Load Over
CurrMinor The yellow indicator
on the LCD turns on,and the Active Alarmon the LCD displays
Load Over Curr
The load current is
higher than theOver LoadCurrthreshold
The load current
is lower than theOver LoadCurrthreshold
SPD fault Minor The yellow indicator
on the LCD turns on,
and the Active Alarmon the LCD displays
SPD Fault
The SPD is faulty The SPD
functions
properly
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AlarmName
Alarmlevel
Alarm Symptom AlarmTriggering
Condition
AlarmClearance
Condition
Controllerfault
Minor The yellow indicatoron the LCD turns on,and the Active Alarm
on the LCD displays
Controller Fault
The control boardis faulty or whenthe two parallel
controllers
communicate isfaulty.
The control boardfunctions properly
Battery
circuit
open
Critical The red indicator on
the LCD turns on, and
the Active Alarm on
the LCD displays
Battery circuit open
The battery circuit
is open
The battery
circuit is closed
Load
MCB tripCritical The red indicator on
the LCD turns on, and
the Active Alarm onthe LCD displays LoadMCB Trip
The load MCB
trips
The load MCB is
closed
AuxCharge
Fail
Notes: M1 board is
the
power-control board
incontroller.
The yellow indicatoron the LCD turns on,
and the Active Alarm
on the LCD displaysAux Charge Fail.
The Auxiliarycharge battery
abnormally
The Batt voltageup to 53V or
Auxiliary is
turned out
Temp
SensorFail
minor The yellow indicator
on the LCD turns on,and the Active Alarm
on the LCD displays“Tem p Sensor Fail”
Battery
temperaturesensor
disconnected orfault alarmthreshold
Battery
temperaturesensor connection
properly.
InputAlarm
Minor The yellow indicatoron the LCD turns on,
and the Active Alarm
on the LCD displays“Input Alarm”
The Input drycontact status is
alternative alarm
threshold.
The status goes back formaly
Batt Over
CurrMinor The red indicator on
the LCD turns on, and
the Active Alarm on
the LCD displays thatthe Batt Over Curr.
The battery charge
current is higher
than the product of
battery ratedcapacity
multiplyingcurrent limitcoefficient.
The battery
charge current is
lower than the
product of batteryrated capacity
multiplyingcurrent limitcoefficient.
Notes: M1 board is the power-control board in controller.
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Alarm input function
Table 1-4 Alarm input function
Dry contact type Dry contact state
Normally-open, Normally-closed Normally-open: open upon normal input; closedupon alarm input
Normally-closed: closed upon normal input;open upon alarm input
Alarm output function
Table 1-5 Alarm output function
Output drycontact SN
Output dry contact alarm Dry contact state
Output dry
contact 1
Controller fault (settable, see Table 3-4 in 3.4
Setting Parameters3.4 Setting Parameters) Normally-open.
Output dry
contact 2
Battery undervoltage (settable, see Table 3-4 in
3.4 Setting Parameters)
Control function
The controller has two control modes: auto control and manual control.
In auto control status, the controller will perform control functions according to preset
parameters and logic automatically.
In manual control status, users can control connections of the photovoltaic panels andloads through keyboard on the controller panel or host.
Communication function
The controller can communicate with the host through RS485/RS422 port. The controller
parameter, maintenance parameter and adjustment parameter can be set through the host. Itcan read the measurement values, active alarms, history alarms and history data. The protocol
format complies with the master/slave protocol.
Parallel connection
The controller can work in parallel-connection model. Each controller communicates with thehost through RS485 and can port. They can identify host/master controller automatically andcommunicate with computer or monitor. The parallel connected controllers can synchronize
automatically.
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Display function
The controller uses a 128 × 64 LCD, which displays real-time controller and battery status,
measurement values and alarms.
Historical data record function
The controller can record data up to 31 days, including the data about:
− The highest battery temperature every day
− The lowest battery temperature every day
− The highest battery voltage every day
− The lowest battery voltage every day
The controller can record 100 historical alarms, including the following alarm information:
− Alarm content
− Alarm start time and end time
− Load current and battery voltage in the alarm time (available through the host)
Battery management function According to input current and voltage, battery capacity, load status and busbar voltage,
the controller performs battery management to ensure the efficient charge and dischargeof the battery, so as to prolong the battery lifetime and make efficient use of the solar
energy.
In the auto-state, the controller carries out automatic control according to the preset parameters and logic in order to make full use the energy input from the array.
In battery FC mode, the busbar voltage is controlled within ±0.6V of the preset FC point.
In battery BC mode, the busbar voltage is controlled within -1.2V of the preset BC point.
If controller uses PWM mode, the conditions for FC/BC transition are as follows:
In battery FC state, the controller will control the battery to enter BC mode when the FC
voltage decreases to a point lower than the preset “FC to BC voltage” and BC interval
has been more than 1 hour.
In battery BC state, the controller will control the battery to enter FC mode when the BCvoltage is -1.2V higher than the preset BC voltage and BC has kept for more than 2
hours, or when BC time has reached the maximum time limit.
If controller uses ON/OFF mode, controller will manage array input based on the defaultON/OFF logic.
In the manual state, you can control the On/Off of the photovoltaic panels and
connection/disconnection of loads through the operation panel or through the host.
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1.4 Technical Parameters
Table 1-6 Controller technical parameters
Type Item Description
Environment Operating
temperature-20°C – +55°C
Storage temperature -40°C – +70°C
Relative humidity 0 – 95%RH
Altitude ≤5500m (derating is necessary above 3,000m.
Rated current decreases 5A for every 1000m
higher)
Others No conductive dust or erosive gases. No possibility
of explosion
DC input Input route 9 routes
Input current Rated current: 50A. Overcurrent alarm point: 55A
(adjustable. See 3.4 Setting Parameters)
Input voltage Rated input voltage: 48 V DC. maximum open
circuit voltage: 96 V DC
DC output Output route 25A × 1 (MCB), 10A × 2 (MCB), 6A × 1(MCB)
Output current Rated load current: 20 A
Output voltage Rated voltage: 48 V DC
Maximum allowable output voltage: 60 V DC
Efficiency ≥ 99%
Battery
configurationInput interface One route. If the route is open, the controller will
stop working
Capacity 50 Ah - 5000 Ah
EMC Conducted emission Class B IEC61000-4
Radiated emission
Immunity to EFT Level 3 IEC 61000-4-4
Immunity to ESD Level 3 IEC61000-4-2
Immunity to surges Level 3 IEC61000-4-5
Immunity to radiation Level 2 IEC61000-4-3
Immunity to
conductionLevel 2 IEC61000-4-6
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Type Item Description
SPD Lightning protection
features
The photovoltaic arrays input port and load port are
configured with SPD, whose rated capacity is 20kA and maximum capacity is 40 kA
Safety Standard Compliant with IEC60950 standard
Insulation resistance At temperature of 15°C - 35°C and relative
humidity not higher than 90%RH, apply a test
voltage of 500 V DC. The insulation resistance between DC circuit and earth is not less than 2 MΩ
Insulation strength (Remove the SPD from the system before the test.)
Input/ output circuit to earth: 1414 V DC
Input/ output circuit to communication outputcircuit: 2828 V DC
Input/ output circuit to dry contact: 1414 V DC
Communication output circuit to dry contact: 1414
V DC
For all the three tests above, there should be no
breakdown or flashover within 1 min, with leakagecurrent not bigger than 10 mA
Other MTBF 100000hr (Bellcore TR-332 reliability forecast), at
25°C
Protection level IP55
ROHS Compliant with R5 requirement of ROHS
Mechanical Dimension (mm) 260 (W) × 195 (H) × 390 (D)
Weight (kg) ≤ 10 (without packaging)
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2 Installation and commissioningThis chapter introduces installation, cable connection, commissioning and later-phase works.Before installation, read through 2.1 Safety Regulation and Safety Precaution, and then followthe instructions to carry out the installation and connect cables step by step.
2.1 Safety RegulationsCertain components in this controller have hazardous voltage and current. Adhere to thefollowing instructions:
Only qualified personnel with sufficient knowledge of the controller can carry out the
installation. The safety precautions and local safety rules shall be adhered to during the
installation.
All external circuits that are below 48 V DC and connected to the controller must complywith the requirements of SELV as defined in IEC 60950.
Make sure that the power to the controller is cut off before any operations can be carriedout within the controller.
After the installation and the commissioning, the controller shall be kept locked and thekey should be kept in possession by corresponding personnel.
The wiring of the power distribution cables should be arranged carefully so that the
cables do not come in contact with the maintenance personnel.
All the tools must be insulated and antistatic.
2.2 Installation And Cable Connection
2.2.1 Installation Preparation
Unpacking inspection The equipment should be unpacked and inspected after it arrives at the installation site.
The inspection shall be carried out by representatives of both the user and HUAWEI Co.,
Ltd.
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To inspect the equipment, you should open the packing case, take out the packing list
and check whether the equipment is correct and complete accordingly to the packing list.Make sure that the equipment is delivered intact.
Preparing cables
The cable should be selected in accordance with relevant industry standards. The CSA of DCcable depends on the current flowing through the cable, the allowable voltage drop and load peak current. The cable list is given in Table 2-1.
Table 2-1 Cable list
Connectionpoint
RecommendedCSA
Recommended cablecolor
Recommendedmax. distance
Battery to
controller
16 mm2 Blue for negative and
black for positive
13 m
Controller
grounding cable10 mm
2 Yellow-green 1.8m
Note: the actual cable CSA and color may differ in actual configuration
Select the battery cable CSA according to Table 2-2.
Table 2-2 Battery cable CSA selection
Battery fuserated current
Max.batterycurrent
Min.cableCSA
Terminal specs Max. cable length(allowable voltagedrop: 0.5V)
100 A 60 A 16 mm2 H shape terminal 8 m
Note:
1. The specs are applicable at ambient temperature of 25°C. If the temperature is higher orlower than this, the CSA of the cable should be increased.
2. The battery cable should reach at least +70°C heat durability
Select the load cable CSA according to Table 2-3.
Table 2-3 DC load selection
Loadrouteratedcurrent
Max.outputcurrent
Min.cableCSA
Max. cable length(volt drop: 0.5V,with min. CSA)
Max. cable length (voltdrop: 0.5V, with max.CSA)
25 A 20 A 6 mm2 19 m 52 m
10 A 8 A 4 mm2 19 m 52 m
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Loadrouterated
current
Max.outputcurrent
Min.cableCSA
Max. cable length(volt drop: 0.5V,with min. CSA)
Max. cable length (voltdrop: 0.5V, with max.CSA)
10 A 8 A 4 mm2 19 m 52 m
6 A 5 A 4 mm2 19 m 52 m
To make sure that the MCB works properly upon overloads, the MCB capacity should be
kept within 1.5 - 2 times the rated load capacity.
The CSA of the grounding cable should be not less than 6 mm2.
The battery MCB and load MCBs use H shape terminal to connect. Or users use cableswith insulation layers broken up to connect to the load MCBs.
There are six PG21 cable entry holes at the bottom of the controller.
2.2.2 Installing Controller
The controller installation modes include wall mounting and mast mounting.
Before determining the specific installation position of the cabinet, make sure that there is an800 mm maintenance space in the front of the cabinet. The installation steps are shown inFigure 2-1.
1. Mount expansion bolts into the wall through the eight installation holes shown in Figure
2-1, it is recommended to use M4× 8 bolts to install the four hangers.
Figure 2-1 Installation dimesions(unit:mm)
2. In either wall mounting or mast mounting, it is recommended to use M10 socket spannerand M10 × 16 bolts. The installation diagrams of wall mounting and mast mounting areshown in Figure 2-2 and Figure 2-3.
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Figure 2-2 Wall mounting
Figure 2-3 Mast mounting
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2.2.3 Connecting Cables
The controller uses bottom cabling method. The connection terminals are shown in Figure
2-4.
Figure 2-4 Cable connection of the controller
The following precautions should be taken in the cable connection operation.
1. Before connecting battery cables, users should check the polarities of the cables against
those of the batteries and switch the battery MCB to ensure safety.
2. After the check, connect the positive battery cables to the positive busbar. Connect the
negative battery cables to the battery MCB.
3. Check once again that the polarities of the cables connected to the positive busbar and
battery are correct.
WARNING
Reverse connection or short-circuit of the battery might cause the battery to burn or other
major failures, and even endanger personal safety. Only experienced processionals areallowed to connect the batteries. During the operation, pay attention to polarities and prevent
shortcircuit to ensure personal safety.
Prepare cables according to Table 2-4, and connect the cables.
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Table 2-4 Cable connection description
Cable Color Amount Connection
From ToArray input
cables
Positive
(+)Black 9 Positive
electrode of the
array
Positive
electrode of the
controller (9routes)
Negative
(-)Blue 9 Negative
electrode of thearray
Negative
electrode of thecontroller (9
routes)
Battery cables Positive
(+)Black 1 Positive
electrode of the battery string
Positive
electrode of thecontroller (1route)
Negative(-)
Blue 1 Negativeelectrode of the
battery string
Negativeelectrode of the
battery of the
controller (1route)
Output cables Positive
(+)Black 4 Positive
electrode of the
controller (4
routes)
Positive
electrode of the
load
Negative
(-)Blue 4 Negative
electrode of thecontroller (4
routes)
Negative
electrode of theload
Communication
cables 1T+ / 1 Controller
J16_T+
Other monitor
devices
T- / 1 Controller
J16_T-
Other monitor
devices
R+ / 1 Controller
J16_R+
Other monitor
devices
R- / 1 ControllerJ16_R-
Other monitordevices
Communication
cables 2(Parallel
Connection)
T+ / 1 Main controller
J17_T+
The other
controllerJ16_T+
T- / 1 Main controller
J17_T-
The other
controller
J16_T-
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Cable Color Amount Connection
R+ / 1 Main controller
J17_R+
The other
controller
J16_R+
R- / 1 Main controller
J17_R-
The other
controller
J16_R-
Communication
cables 3
(Parallel
Connection)
CAN+ / 1 Main controller
J12_CAN+
The other
controller
J12_CAN+
CAN- / 1 Main controller
J12_CAN-
The other
controller
J12_CAN-
Auxiliary
power supplycable
J6 Blue-Black Connected
already incontroller
J6 on main
board
PGND bar Metal 1 Positive busbarof the
controller
Groundingterminal of the
controllerhousing
Grounding cable Yellow-green 1 Grounding
screw of thecontroller
housing
Ground or
support
Note:
1. The positive electrode of the busbar of the controller is connected to the grounding point ofthe controller housing at factory, users need to check it .
2. You should put the cables through the cable entry holes at the bottom, and then crimp the
cable tap. The positive busbar uses OT lugs for connection. For Negative electrodes, you caneither use H-shape terminals, or crimp-connect after peeling off the insulating coating.
3. The load cable is provided by the equipment that uses power.
4. Make sure that all MCBs and fuses are disconnected before the cable connection.
5. Colors of the cables can be adjusted on site according to actual situation.
2.2.4 Sealing Cable Entry Holes
For outdoor controllers, users should seal the cable entry holes after the installation. The
procedures are as follows:
For used holes, tighten them with PG caps.
For holes with a small cable or with several cables, block them with caps and seal them
with waterproof mud (accessory).
For unused holes, block them with cables and seal them with waterproof mud.
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Remark: It supports the installation of OMU-B. For details, please refer to the "OMU-B User
Manual".
2.3 Commissioning
2.3.1 Startup Check
Check the items given in Table 2-5 and record the check result. Ensure that the componentsare installed firmly and the cables are connected properly.
Table 2-5 Checking items before startup
Type Checking item Content
ArrayInput
Input cables The polarities are correct. The connections are proper. All the input and output MCBs areswitched off
Between positive and
Negative terminals No shortcircuit
Output Output cables The polarities are correct. The connections are
proper. All the input and output MCBs areswitched off
Between positive and Negative terminals
No shortcircuit
Battery Battery cables The polarities are correct. The connections are proper
Between positive and
negative battery terminals No shortcircuit
2.3.2 Power On And Commissioning
The power on and commissioning procedures of the controller are as follows.
1. Battery polarity check and connection
Check that the polarities of the two batteries are correct and switch on the battery MCB.Meanwhile the auxiliary power supply of the monitoring board in the controller starts to work.
The monitoring unit starts self-checking. After the self-checking, the first information screenwill appear, as shown in Figure 2-5.
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Figure 2-5 First information screen
Check the alarm status of the monitoring module. When the red and yellow indicators on the
monitoring module are off, it means that everything is normal. After the startup, the redindicator and the yellow indicator of the monitoring module might be on. Users may remove
the alarms according to Table 1-3.
When the checks are normal, please switch on the input MCB of the photovoltaic array.
2. Load polarity and connection check
Check that the connection of the load cables, the MCB capacity of the load is proper, and the polarities of the load are correct. After making sure that everything is okay, go on to the next
step.
3. Battery busbar voltage measurement
Use a multimeter to measure the battery busbar voltage. If the busbar voltage is within thenormal voltage (48V - 55V), switch on one load MCB. Check that the battery busbar voltage
is within the normal range after the load starts up and works normally. If the battery busbarvoltage is close to 47V, do not switch on the next load MCB until the batteries are properly
charged. Repeat the operation until all the loads are powered on and work normally.
4. Parameter setting
Set the significant parameters according to the parameter card which is delivered with thecontroller.
Enter the corresponding operation interface and enter the password to set the parameter, see 3.4 Setting Parameters.
1) Battery parameter setting
Set the battery capacity according to the total capacity of the batteries actually configured, andset busbar overvoltage alarm point, busbar undervoltage alarm point and busbar undervoltage
protection point in accordance with the battery features.
If the controller is configured with battery temperature sensor, users need to set the battery
overtemperature alarm point and battery overtemperature protection point. If not, users do not
need to set these parameters.
2) Set system control method
The controller provides two photovoltaic array control methods: PWM method and ON/OFFmethod. Users select control method according to their need. PWM method is recommended.
3) Local address: 4 (default).
Notes: Controller local address should be setup the same as each other in parallel connection.
4) Default protocol: Master-Slave protocol.
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5) Time: in accordance with actual time and date.
6) The controller will assume defaults for the parameters not configured during the
commissioning.
7) For significant parameters, it is recommended to use default settings if not specified.
8) Set jumpers of the board card according to actual situation, as listed in Table 2-6.
Table 2-6 Jumper setting list
SN Screenprint
Parameter Settings Default
1 SIP1 Output dry
contact 1Pins1,2short-circuited:normally-closed;
pins2,3short-circuited: normally-open.
Normally-open
2 SIP9 Output dry
contact 2Pins1,2short-circuited:normally-closed;
pins2,3 short-circuited: normally-open.
Normally-open
Notes: Keep default parameters.
5. General parameter setting
For the photovoltaic array open-circuit-voltage too high alarm point and photovoltaic inputovercurrent alarm point, set these parameter according to the maximum open circuit voltage
and the shortcircuit current of the photovoltaic arrays, and the allowable setting range listed in
Table 1-2
When parallel connection system, all of the two controllers parameters will be the same afterCan cable connecting except Output/Input dry contact and address. If parameter of onecontroller is setup, the correspondence parameters of other controller keep synchronization
automatically.
6. Alarm check
After the parameter settings, the system status should be „No alarm‟. If the system status is
„Alarm‟, check the alarm by referring to 3.3 Querying Active Alarm and clear the alarm.
7. History alarm clearing
Clear history alarm generated during the commissioning by referring to 3.6 Querying HistoryAlarm. All the alarms will be cleared out in parallel connection.
8. The return to the system information screen
Press ESC to return to the system information screen.
2.4 Final Steps After the installation and commissioning, fill in the parameter card with the actual parameters.
Clear the installation field.
Sort the accessories and store them properly.
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Lock the controller cabinet. Keep the key.
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Indicator Color Normalstate
Faultstate
Fault cause
- Off The SC4850E has no power input.
Alarmindicator
Yellow Off On There are minor alarms
Critical
alarmindicator
Red Off On There are critical alarms
The monitoring board uses a 128 × 64 LCD and a keypad with 6 keys. The interface
languages are Chinese and English. Description of the keys is in Table 3-2.
Table 3-2 Description of keys
Keys Functions
ESC Return key: Press this key to go back to
previous menu
On the first information screen, press
ESC and you can see the software
versionENT Confirmation key: Press this key to go to
next menu or validate the change made to a parameter setting. After a change, only pressing ENT can validate the change
▲ Press ▲ or ▼ to scroll through the menus.
When the editable options are character
strings, pressing ▲ or ▼ can edit values
These four arrow keys can be used to
change the value of a parameter: Press
◄ or ► to move the cursor to the parameter to be changed and press ▲
or ▼ to change the value of a parameter
▼
◄ Press ◄ or ► to move the cursor
►
3.2 Querying StatusThe first information screen is shown in Figure 3-2.
Figure 3-2 First information screen
The first row of the first information screen displays the date and time alternately.
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The second row displays the output voltage of the controller and the load current. 55.2 VDC is output voltage and 4.6A is total load current. The content varies with the actual
values.
The third row displays the controller status, which is „No alarm‟ or „Alarm‟.
The fourth row displays management mode and battery charge status. The managementmode includes manual mode and auto mode. The battery charge status includes FC, BC
and discharge status.
Press ▼ continuously at the first information screen, users can query the information listed in
Table 3-3.
Table 3-3 Query information
SN. Status Content
1 Batt Volt The present battery voltage NA
2. Load Current The present load current NA
3. OperationStatus
„Auto‟ or ‟Manual‟ NA
4 PV State „On‟, „Off‟ or „PWM‟ NA
5 PV OpenVolt The actual array voltage NA
6 PV Current The present array current NA
7 Battery
CurrentThe present battery current NA
8 Battery Temp The actual battery temperature NA
9 Batt Remain
CapThe current remaining battery capacity NA
10 Batt Chrg
TimesThe total battery charge times NA
11 Batt Disc
TimesThe total battery discharge times NA
12 Daily ChrgCap
The total charge capacity of the day NA
13 Daily DiscCap
The total discharge capacity of the day NA
14 PV Input Cap The accumulated array input capacity NA
15 Load OutputCap
Accumulated load output capacity NA
16 Max Batt
Temp
The maximum battery temperature of
the day NA
17 Min Batt
Temp
The minimum battery temperature of
the day NA
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SN. Status Content
18 Max Batt Volt The maximum work voltage of the day NA
19 Min Batt Volt The minimum work voltage of the day NA
20 AUX Chrg
state
The current auxiliary charge state.
Available when auxiliary charge is
enabled, that is, diesel generator, wind
power system or other auxiliaryequipment is used to charge batteries
NA
21 Current Chrg
Time
The current auxiliary charge time.
Available when auxiliary charge is
enabled
NA
22 Total Chrg
Time
The total auxiliary charge time.
Available when auxiliary charge is
enabled
NA
23 Sys Run Time Total system run time NA
40 Comm.State Connected/Disconnected NA
41 GPRS IP 0.0.0.0 – 255.255.255.255 After "GPRS" option is
selected for networking
mode, system willdisplay
42 GPRS State Dialing/Dial Succeed/NotDial/Dial
Fail
After "GPRS" option is
selected for networking
mode, system willdisplay
43 SIM State On Line/Off Line After "GPRS" option is
selected for networkingmode, system will
display
44 GSM Signal NA/7 NA: Haven't registered;
0-7: Means signalquality level
After querying all the information, press ▲ continuously to return to the first informationscreen, or press ENT to enter the main menu screen, as shown in Figure 3-3.
3.3 Querying Active Alarm
1. Press ENT at the information screen to enter the main menu, as shown in Figure 3-3.
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Figure 3-3 Main menu screen: Active alarm highlighted
2. Figure 3-3 illustrates that „Active alarm‟ is selected. Press ENT to enter the active alarm
screen and view the active alarms, as shown in Figure 3-4.
Figure 3-4 Active alarm screen
3. Press ▼ at the active alarm screen, users can query all the active alarms. Press ESC to
return to the main menu.
3.4 Setting Parameters
1. Press ▼at the main menu screen to select the „Settings‟ submenu, as shown in Figure 3-5.
Figure 3-5 Main menu screen: Settings highlighted
2. Press ENT to enter the password screen, as shown in Figure 3-6.
Figure 3-6 Password screen
3. Enter the password: 640275.
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To enter the password, use ▲ or ▼ to modify numbers, and use ◄ or ► to move the cursor.After entering the password, press ENT to confirm the password and enter the Settings screen,
as shown in Figure 3-7.
Figure 3-7 Settings first screen
Press ▼ at the settings first screen, user can set the parameters listed in Table 3-4.
Table 3-4 Setting parametersSN Parameter
nameSetting range Default
1 Batt capacity 50Ah - 5000Ah 300Ah
2 HighVolt
Alarm
BC voltage + 1.5 V DC (min: 58.0 V DC) - 60.0
V DC58.5 V DC
3 LowVolt
Alarm
LLVD+ 0.5 V DC (min: 46.0 V DC) - 50.0 V
DC47.0 V DC
4 LLVD 43 V DC - 48 V DC 46 V DC
5 B-HighTempAlm
35°C - B-OverTemp Prot -10°C (max: 60°C) 50°C
6 B-Temp ProtEN
Yes, No No
7 B-OverTemp
ProtB-HighTemp Alm + 10°C (min: 45°C) - 70°C 60°C
8 Boost Chrg
Voltmin:
54.2 V DC(Float Chrg Volt + 2.2 V DC) – max:57.5 V DC (HighVolt Alarm - 1.5 V DC)
56.4 V DC
9 Float Chrg Volt min: 52.0 V DC (FC to BC Volt +1.5 V DC) –
max: 56.3 V DC (Boost Chrg Volt - 2.2 V DC)53.5 V DC
10 Dry contact NO, NC NO
11 DryCont output
1
Array lost, battery undervoltage, battery loop
open, LLVD, Battery over temperature,controller fault
Controller fault
12 DryCont output
2
Array lost, battery undervoltage, battery loop
open, LLVD, Battery over temperature,controller fault
Battery
undervoltage
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SN Parametername
Setting range Default
13 AUX Charge
ModeVoltage mode, Time mode Voltage mode
14 AUX trigger
time00:00 - 23:30 20:00
15 AUX run time 2H - 18H 10H
16 Temp Comp
SetYes, No Yes
17 Temp Comp
Coeff0 - 100(-mV/°C.S) 72(-mV/°C.S)
18 Address 1 - 254 4
19 Comm
Protocol TelMaster-Slave, Tel Protocol Master-Slave
20 Clear History Yes, No No
21 Reset
parameterYes, No No
22 Date & Time Yes, No No
23 Language Chinese, English English
24 Charge Mode PWM, ON/OFF PWM
42 Comm Method GPRS,IP No
43 Server IP Addr 0.0.0.0 – 255.255.255.255 0.0.0.0
44 BackupServer
IP0.0.0.0 – 255.255.255.255 0.0.0.0
45 Site ID “A–Z”“a–z”“0–9”“#”“*”“ space”“、”“.”“-” “@” NA
46 APN Name “A–Z”“a–z”“0–9”“#”“*”“ space”“、”“.”“-” “@” NA
47 APN Number “A–Z”“a–z”“0–9”“#”“*”“ space”“、”“.”“-” “@” NA
48 User Name “A–Z”“a–z”“0–9”“#”“*”“ space”“、”“.”“-” “@” NA
49 User Password “A–Z”“a–z”“0–9”“#”“*”“ space”“、”“.”“-” “@” NA
50 SMC Number “0–9”“+” NA
51 NMC Number “0–9”“+” NA
52 OMU IP 0.0.0.0 – 255.255.255.255 0.0.0.0
53 OMU Make IP 0.0.0.0 – 255.255.255.255 0.0.0.0
54 Gateway 0.0.0.0 – 255.255.255.255 0.0.0.0
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3.5 Maintenance1. Press ▼ at the main menu screen to select the „Maintenance‟ submenu, as shown in Figure
3-8.
Figure 3-8 Main menu screen: Maintenance highlighted
2. Press ENT to enter the password screen, as shown in Figure 3-9.
Figure 3-9 Password screen
3. Enter the password: 640275.
To input the password, use ▲ or ▼ to modify numbers, and use ◄ or ► to move the cursor.After the input, press ENT to confirm the password and enter the maintenance screen, as
shown in Figure 3-10.
Figure 3-10 Maintenance screen
4. Press ► to change „Auto‟ into „Manual‟, and press ENT to confirm the setting.
In the manual mode, users can perform the following array controls, as described in Table 3-5.
Table 3-5 Control parameters in manual mode
SN Control parameter Setting range
1 PV Array On, off
2 Load Disconnect, Reconnect
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SN Control parameter Setting range
3 AUX charge On, off
In manual mode, the monitoring board will display as shown in Figure 3-11.
Figure 3-11 Array screen
3.6 Querying History Alarm
1. Press ▼at the main menu screen to select the „History alarm‟ submenu, as shown in Figure
3-12.
Figure 3-12 Main menu screen: History alarm highlighted
2. Press ENT to view the history alarms, as shown in Figure 3-13.
Figure 3-13 History alarm screen
3. Press ▼ at the history alarm screen, users can query all the history alarms. Press ESC toreturn to the main menu.
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4 AppendixTable 4-1 Hazardous substance
Parts Hazardous Substances
Plumbum Hydrargy
rumCadmium Chrome
6+ PBB PBDE
Pb Hg Cd Cr 6+
PBB PBDE
Cabinet/busbar
× O O O O O
Power
distributioncomponents
× O × O O O
PCBA O O O O O O
Hardware × O O O O O
Cable × O O O O O
O: Means the content of the hazardous substances in all the average quality materials of the
part is within the limits specified in SJ/T-11363-2006.
×: Means the content of the hazardous substances in at least one of the average quality
materials of the part is outside the limits specified in SJ/T11363-2006
(The following gives technical reasons for the items marked „×‟) Huawei Technologies Co.,
Ltd. has been committed to the design and manufacturing of environment-friendly products.
It will reduce and eventually eliminate the hazardous substances in the products throughcontinued efforts in research. However, limited by the current technical level, the following
parts still contain hazardous substances due to the lack of reliable substitute or mature
solution:
1. All solders in the products contain plumbum.
2. Copper alloy contains plumbum.
3. Switch contacts contain cadmium and cadmium compound
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Parts Hazardous Substances
About Environment Protection Period: The Environment Protection Period of the product is
marked on the product. Under normal working conditions and normal use of the productsobserving relevant safety precautions, the hazardous substances in the product (excluding
batteries or storage batteries) will not seriously affect the environment, personal safety or property in the environment protection period starting from the manufacturing date
Applicable product: SC4850E-ZYT solar controller
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