PROPRIETARY INFORMATION For use pursuant to the terms of the applicable Sinovel Agreement

SL1500 Wind Turbine Technical Data Sheet

TYPE SL1500/70 SL1500/77 SL1500/82 Wind turbine class IEC Ⅱ/Ⅲ/S IEC Ⅲ IEC Ⅱ/Ⅲ Rated power（kW） 1500 1500 1500 Cut-in wind speed（m/s） 3 3 3 Rated wind speed（m/s） 12 11 10.5 Cut-out wind speed（m/s） 25 20 20 Survival wind speed（m/s） 59.5/52.5 59.5/52.5 59.5/52.5

Normal temperature type

Low temperature type

Normal temperature type

Low temperature type

Normal temperature type

Low temperature type

Operating temperature range （）

-15~+45 -30~+45 -15~+45 -30~+45 -15~+45 -30~+45 Survival temperature () -25~+45 -45~+45 -25~+45 -45~+45 -25~+45 -45~+45 Longevity of design (year) 20 20 20

Operation

Averaged availability of wind farm (%)

≥95 ≥95 ≥95

Rotor diameter（m） 70.4 77.4 82.9 Swept area（m2） 3892.5 4657 5398 Rated rotational speed/range（rpm）

20.1/11.5~21.2 17.4/9.7~19 17.4/9.7~19

Number of blades 3 3 3

Rotor

Rotational direction (from up wind)

Clockwise clockwise clockwise

PROPRIETARY INFORMATION For use pursuant to the terms of the applicable Sinovel Agreement

Cone angle (°） 0 0 0 Tilt angle (°） 4.5 4.5 4.5 Power Regulation pitch Pitch pitch Blade length (m) 34 37.5 40.25

Blades Material

GRP (glass reinforced plastic)

GRP (glass reinforced plastic)

GRP (glass reinforced plastic)

Type Double-fed induction generator

Double-fed induction generator

Double-fed induction generator

Number of Phase 3 3 3 Rated power（kW） 1520 1520 1520 Rated output voltage（V） 690 690 690 Frequency（Hz） 60 60 60 Rated rotational speed/range （rpm）

2096/1200~2400 2096/1200~2400 2096/1200~2400

Power factor Capacitive 0.95 ～ inductive 0.9 Rated: 1

Capacitive 0.95 ～ inductive 0.9 Rated: 1

Capacitive 0.95 ～ inductive 0.9 Rated: 1

Protection level IP54 IP54 IP54 Insulation level F F F

Transformer rating

35kV/0.69kV 35kV/0.69kV 35kV/0.69kV

Number of transformer

1 1 1

Generator

Generator Step-up transformer data

Winding Dyn11 Dyn11 Dyn11

PROPRIETARY INFORMATION For use pursuant to the terms of the applicable Sinovel Agreement

Connection Impedance 7% 7% 7%

Drive stage 3 3 3 Drive ratio 1:104 1:120 1:120 Gearbox Rated power (kW) 1700 1700 1700 Major brake system Air-braking Air-braking Air-braking

Brake system Minor brake system mechanical braking mechanical braking mechanical braking

Control system Type PLC PLC PLC Capacity (KVA) 500 500 500 input/output voltage (VAC) 690/0~700 690/0~700 690/0~700 Input/output current (A) 200/500 200/500 200/500 Converter Range of input/output frequency (Hz)

60±1% / 0～20 60±1% / 0～20 60±1% / 0～20

type tubular steel tower tubular steel tower tubular steel tower Tower

Hub height （m） 65/70/80 65/70/80/100 70/80 Active Active Active

Type/design Sliding bearing with pre-friction

Sliding bearing with pre-friction

Sliding bearing with pre-friction

Drive Multistage planetary gear driven by conversion asynchronous motor

Multistage planetary gear driven by conversion asynchronous motor

Multistage planetary gear driven by conversion asynchronous motor

Yaw system

Range of yaw speed (°/min) 18.3~23.2 18.3~23.2 18.3~23.2

Pitch bearing type 4 points contact ball bearing4 points contact ball bearing

4 points contact ball bearing Pitch system

Pitch drive Multistage planetary gear Multistage planetary gear Multistage planetary gear

PROPRIETARY INFORMATION For use pursuant to the terms of the applicable Sinovel Agreement

driven by conversion asynchronous motor

driven by conversion asynchronous motor

driven by conversion asynchronous motor

Design standard IEC61024 and local ambient

IEC61024 and local ambient

IEC61024 and local ambient Lightning protection

Resistance of earthing （Ω） ≤4 ≤4 ≤4 Nacelle （kg） 55614 55614 55614 Rotor （kg） 16462 16462 16462 Weight Blades （kg） 3×5500 3×5900 3×6300

If annual mean wind speed is about 6 to 7 m/s in local wind farm, we suggest that SL1500/77 or SL1500/82 wind turbines may be installed here. Especially, the later one is a better choice.