AUTOMATIC FLOAT BATTERY CHARGER and D.C SOURCE 110 V/ …

Ministry of Electricity and Renewable Energy وزارة الكهرباء والطاقة المتجددة

Egyptian Electricity Holding Company الشركة القابضة لكهرباء مصر

EDMS 27-300-1 EEHC DISTRIBUTION MATERIALS SPECIFICATION

Date: 09-01-2017

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EDMS 27-300-1

SPECIFICATION

FOR

MANUAL \ AUTOMATIC FLOAT BATTERY

CHARGER and D.C SOURCE 110 V/ 40 AD.C

Issue: Jan-2017 / Rev- 1

( يجب تحديدها بواسطة شركة التوزيع قبل الطرح. Option itemsتوجد بنود اختيارية )




Date: 09-01-2017

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CONTENTS

MANUAL - AUTOMATIC FLOAT BATTERY CHARGER AND D.C SOURCE ............................. 3

THE CHARGER SHALL HAVE THE FOLLOWING SPECIFICATIONS . .......................... 4

PROTECTION ................................................................................................................. 5

Alarm actions (horn and flag) for AC and DC ...........................................................................5

CONTROL ................................................................................................................................. 6

IMPORTANT REQUIREMENTS……………………………………………………………..7

spare parts of battery charger : ................................................................................................ 7

8 ....................................................................................... تىد إخرياريح طثقا لأحرياجاخ شزكاخ انرىسيع

ط فيح عايحشزو .............................................................................................................................. 8




Date: 09-01-2017

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MANUAL - AUTOMATIC FLOAT BATTERY CHARGER AND D.C SOURCE

The battery charger shall have nominal voltage 110 v DC. It will be three phase AC

Supply Voltage.

It will have float charging and high rate charging regimes operating on the principle of

constant voltage output. The charger must have the possibility of both manual and

automatic switching over from one regime to the other one depending on the state of

battery bank. The charger shall have soft start features.

The output voltage, at any regime, must be adjustable and stable within the specified

range when the output current is varied from 0% to 100% of its rated value, AC supply

voltage and/or frequency within the specified ranges.

The charger output current must be automatically limited to the specified value, up to

40% loss of battery voltage (e.g. 40% of cells are shorted).

A control unit must be added so that the load supply voltage is regulated 110 ± 2% VDC

independent on the charger output without any instantaneous interruption of load supply.

The charger rectifier bridge and main transformer shall be rated for the required charger

rated output current of 40 A, this output shall feed both battery charging and load which

are connected in parallel at charger output.

The charger must be equipped with a DC voltage regulating unit for feeding the control,

signal and protection circuits of medium voltage switch board within the specified

voltage range at either battery float or high rate charging regime.

The charger is to be equipped on all sides (input and output) with circuit breakers (MCB)

having thermal and magnetic releases on all poles and with the following specification:

– AC supply side (AC, 3 phase) suitable for protecting charger with output (MCB

63 A.Breaking current 16 KA ).

– Battery side (DC) suitable for max. charging current of ( 2 Pole MCB 50 A

– 10KA).

– Load side (DC) suitable for max. load of ( 2 Pole MCB 40 A – 10 KA).




Date: 09-01-2017

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THE CHARGER SHALL HAVE THE FOLLOWING SPECIFICATIONS:

1- AC supply voltage 3 phase 50 c/s, 380 V ± 15%

2- Output DC voltage:

a) Float charging 90 to 135 (to be set at 128.8 V)

b) High rate charging 90 to 160 (to be set at 147.2 V)

c) Load voltage 110 ± 2%

d) Charger output current adjustable range 25 A – 40 A

3- Output DC voltage static stability ± 1% at variation of :

Output DC current from 0% to 100% its nominal value (40 A) .

Input AC voltage from 85% to 110% of its nominal value (380) V .

Nominal frequency by ± 3%

Long term stability 0.15 % of DC

4- Ripple voltage

a) Battery connect < 1% of DC

b) Battery not connected < 2% of DC

5- Insulation > 2 KV AC for one minute

between input/output and earth.

6- Insulation resistance > 10 MΩ with 500 VDC

between input/output and earth.

7- Noise level not more than 48 Db.

8- D.C voltage regulation for feeding the load shall be with transistor voltage

regulation with voltage accuracy ± 2% .

9- D.C output suitable for digital protection relays.

10- The output DC voltage of the charger shall not be affected by reversing of

the phase sequence.

11- The charger is to be connected permanently in parallel with battery and

feeding at the same time the DC load.




Date: 09-01-2017

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12- The charger shall be equipped with the following protection, control,

indication and alarm and metering devices.

PROTECTION

AC side

– Phase failure.

– Over voltage and under voltage.

– Input CB (provide with over load and short circuit protection).

– Varistors (AC surge suppression).

DC side

– Over voltage charger output.

– Over current (battery charging current).

– Reverse polarity.

– Three output circuit breakers 6 KA(double pole) one for load , the other

for battery and third for emergency lighting charging (provided with over

current and short circuit protection).

– Under voltage on battery side.

Charge side

– Surge (spikes) suppressors.

– Electronic current limit (charge output).

– Semi-conductor fuses for thyristors.

– Blocking diodes, to prevent battery discharge in case of bridge failure.

Trip actions

– Battery charging over current

– AC multifunction (phase failure, under voltage and over voltage)

Alarm actions (horn and flag) for AC and DC

– Low voltage (under voltage on battery).

– Charger failure – AC failure.

– Any circuit breaker trip.




Date: 09-01-2017

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– Indication for earthing on DC (+, -). – High Charging current.

CONTROL

– On / off switch.

Mode selector:

– Manual: float and high rate.

– Automatic: float and high rate.

Setting for all parameters:

– Max. Charging current.

– Float charging voltage.

– High rate charging voltage.

– Alarm acknowledgment an reset test.

Metering and indication

– One DC voltmeters (with selector for battery & for load).

– AC voltmeter with selectors switch.

– One DC ammeters ( for battery& for load).

– Charging failure (red light) and free contact for remote alarm.

– AC circuit breaker trip (light).

– Light for each operating mode (float / high rate).

– DC earth fault.

The charger Shall be equipped with the following communication (option):

– At least 4 programmable relays.

– Modbus communication RS232 and RS485 ( full monitor and control ).




Date: 09-01-2017

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IMPORTANT REQUIREMENTS

– Maintenance and repair during guarantee period (5 years) shall be at site.

– D.C. output independent on input phase sequence or the phase sequence shall be

automatically changed inside charger to suit required sequence for the charger.

– Indicating lamps (on front of charger panel) test facility is preferred to be provided.

– Output voltage is smoothed by LC filtration to reach ripple requirements.

– Snapper circuit and surge suppression devices output protection should be provided.

– Detailed catalogues with full specifications and drawings shall be attached with the offer.

– A sample of charger shall be inspected and tested and should be accepted by …EDC before

manufacturing of chargers.

– Charger is suitable for alkaline or acidic batteries of nominal volts. 110 volts

– Nominal output current rating of charger 50 A.D.C.

– Input voltage 3x380v-3 wires (±15 %) 3phas, (50 c/s ± 3 %)

– Ambient temperature up to 45 ºC or according to the distribution company requirements.

Operating modes: Automatic and manual using auto/manual selector switch.

SPARE PARTS OF BATTERY CHARGER :

– One AC voltmeter (as delivered ) .

– One DC voltmeter (as delivered ) .

– One DC ammeter (as delivered ) .




Date: 09-01-2017

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بنود إختيارية طبقا لأحتياجات شركات التوزيع:

شاشح انرحكى انخاصح تانجهاس ذريح ذغييز جيع قيى انرشغيم وانرحكى في أاط انشح . -1

ع تعذ. وإيكايح يراتعح وذغييز قيى انرشغيم MODBUSإيكايح ذىصيم انشاح تجهاس انكثيىذز ي خلال -2

يع ذغيز درجح انحزارج نيحي انثطارياخ ي سيادج درجح -3 إيكايح انرحكى تانجهذ انخارج ي انشاح ذهقائيا

حزارذها .

إيكايح أخرثار ذفزيغ انثطارياخ ي خلال شاشح انرحكى تانشاح . -4

شروط فنية عامة:

يجة ا يكى انشاح يعرذ نذي انشزكح انقاتضح نكهزتاء يصز. .1

ذىضح انطاتقح انفيح رفق كم انكرانىجاخ انفيح يىضحا تها انىاصفاخ انكايهح نهشاح وانزسىياخ انر يجة ذقذيى .2

.عطاء

ثلاز أوجه عه انشاح . Selector switchيجة إضافح .3

يجة عذ فصم انشاح أ يقىو انفىنريرز انخاص ته تقزاءج جهذ انثطاريح . .4

و +( تهىي يخرهفي نرىضيح ىع انرسزب . -زب الأرض )( نثح نثيا انرس2يهشو ذزكية عذد ) .5

( أو أحذ انفاساخ.ACيهشو ذزكية ساريح ذعم ف حانح حذوز خهم ف جهذ انشاح ) .6

تانشاح يعط إـــــذار صــــــىذ ف حــــانـــــــح إخفاض انجهذ انسرز انخارج ي U.V relayيهــــشو ذــــزكية .7

( فىند 08-08 )انشاح يذرج ي

يجة أ يحذز فصم نهشاح عذ حذوز إسحاب نجهذ انشاح . .0

-: الآذيعهي ي يزسى عهيح انعطاء أ يىرد يع كم شاح .0

.انرشغيم ذعهياخسخح كايهح ي -أ

إ ( الإنكرزويحسخح كايهح ي كرانىج انصياح شايهح جيع رسىياخ انذوائز انرفصيهيح نهشاح وانكىاخ -ب

.)كأي

ي.سىاخ تىجة خطاب انضا انثـــك تقيح انرأيي انهائ 3انصع يحهيا نهشاحانضا -ج

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AUTOMATIC FLOAT BATTERY CHARGER and D.C SOURCE 110 V/ …