ROBICON Perfect Harmony GenIV Cell Bypass Contactor A5E50124596, A5E40727031; A5E02634363, A5E32187356

ROBICON Perfect Harmony GenIV Cell Bypass Contactor A5E50124596, A5E40727031; A5E02634363, A5E32187356

ROBICON Perfect Harmony GenIV Cell Bypass Contactor A5E50124596, A5E40727031; A5E02634363, A5E32187356

ROBICON Perfect Harmony GenIV Product User Manual Type 6SR41

Harmony VFD Family Features 

The Harmony VFD families consist of four core design configurations, where they are 

functionally identical and share a common controller. These four design configurations are 

targeted at distinct output power configurations with little overlap between the frame sizes. 

These drive families are summarized as follows: 

Note 

The following ratings are subject to change.

GenIV: 

(Refer to Table 4-1 for full GenIV product range) 

200 to 5600 Hp (150 - 4100 kW) 

● 2.3 to 11 kV Output 

● 2.4 to 13.8 kVAC 50/60 Hz Input 

● Air Cooled 

● Power Cell Ratings 

– 750 Volts 

– 40, 70, 100, 140, 200 or 260 Arms 

GenIIIe: 

● 3000 to 9000 Hp (2.25 - 6.75 MW) 

● 2.3 to 7.2 kV Output 

● 2.4 to 13.8 kVAC 50/60 Hz Input 

● Air Cooled 

● Power Cell Ratings: 

– 690 Volts 

– 315, 375, 500, or 660 Arms 

WCIII: 

● 4000 to 10000 Hp (3 MW - 14.2 MW) 

● 2.3 to 8.0 kV Output 

● 2.4 to 13.8 kVAC 50/60 Hz Input 

● Water Cooled 

● Power Cell Ratings: 

– 750 Volts 

– 880 or 1250 Arms 

HV: 

● 10000 to 40000 Hp (7.5 MW to 30 MW) 

● 7.2 to 13.8 kV Output 

● 2.4 to 13.8 kVAC 50/60 Hz Input 

● Water Cooled 

● Power Cells 

– 1375 Volts 

– 500, 800, or 1400 Arms

Evolution 

Historic Milestones: 

1994: World’s 1st fully integrated voltage source inverter (VSI) medium voltage motor 

drive using IGBTs that meet IEEE 519 for input current distortion and NEMA/IEC 

for motor HVF (without using output step-up transformers or line/load filters). 

1995: 1st IGBT-based 6.6 kV drive without an output transformer. 

1996: 1st IGBT-based drive above 10000 Hp (7500 kW). 

1998: Introduction of ProToPSTM and 500th Perfect Harmony drive installed. 

1999: Introduction of process-transparent cell bypass ("fast bypass") capability and 

neutral point shift. 

2000: 1st VSI drive to operate a medium voltage synchronous motor. 

2001: 1000th Perfect harmony drive installed. 

2002: 1500th Perfect Harmony drive installed. 

2003: 1st High Voltage 13.8 kV drive capable of operating motors from 4000 to 

90000 Hp connected directly to 13.8 kV source. 

2004: Built largest PWM drive, 80000 Hp. 

2006: Introduction of smallest footprint medium voltage VFD, GenIV "MicroHarmony".

GenIV Specifications 4

4.1 System Specifications 

Parameter Rating 

Input Line Voltage 2.4, 3.0, 3.3, 4.16, 4.8, 6.0, 6.3, 6.6, 6.9, 7.2, 8.4, 10, 11, 12, 12.47, 13.2, or 13.8kV; 3 phase; 

±10% / -5% 

Input Frequency 50 or 60 Hz ±5% 

Input Power Factor > 0.95 above 10% load 

Input Harmonics <= 5% TDD with ambient THDv <= 2% 

Copper Wound Transformer: 98% Transformer, 99% Converter, > 96,5% Total VFD Efficiency 

Aluminium Wound Transformer: 97,5% Transformer, 99% Converter, > 96% Total VFD 

Output Horsepower, 

Frame Sizes 

200-1100 (9 Cell - Size 1), 800-2250 (9 Cell - Size 2), 

300 - 3500 (15 Cell), 600-6000 (24 Cell) 

9 Cell 15 Cell 24 Cell

2300 V 6000 V 10000 V 

3000 V 6600 V 11000 V 

3300 V 

4000 V 

4160 V 

Output Voltage 

Output HVF < 0.03 

Output dv/dt < 3000 V/µS 

Output Current 40, 70, 100, 140 A, 200 A, 260 A Cell Frame Sizes 

Overload Capacity 150% 1 minute / 10 minute (Ambient temperature <40°C) 

Output Frequency & Drift1 0.5 - 330 Hz, ± 0.5% 

Output Torque 10 - 167 Hz rated torque (2 Quadrant) 

Design Life 20 years 

Auxiliary Voltage 380 - 400 - 415V, 50 Hz; 460 - 480V, 60 Hz; 3 phase2)

Enclosure Type NEMA 1 Ventilated 

Degree of Protection IP 31 

Ambient Temperature 0 - 40 °C (max. 50 °C, derating starts from 40 °C on) 

Humidity 95% non-condensing 

Altitude 0 - 3300 ft. without derating 

Cooling Ventilated, forced air-cooled with integrated fans 

1) For high speed projects (> 300 Hz), consult Siemens concerning trade sanctions 

2) Consult factory for availability of auxiliary voltages other than shown

Power Cell Specifications 

Cell Frame FRAME1 FRAME2 

 040 070 100 140 200 260 

Output Nameplate 

Current 

40 A 70 A 100 A 140 A 200 A 260 A 

Input Voltage 750 V ± 10%, 3 phase, 50/60 Hz 

Input Current 28 A 48 A 73 A 96 A 140 A 182 A 

Overload Capacity (see 

Note) 

(* Ambient <40°C) 

CL-1: 110% of nameplate 1 minute/10 minutes 

CL-2: 150% of nameplate 1 minute/10 minutes 

CL-3: 200% of nameplate 3 seconds/10 minutes 

Losses % 1.3 1.2 1.1 1.0 1.2 1.2 

Discharge to 50 VDC, 

minutes. 

0.84 1.68 2.53 3.37 2.53 3.37 

Electrical Connections Rear access blind connection via power plugs 

Weight (lbs.) 52 57.5 63 68.5 63 68.5 

Envelope Width 13.42" 

Envelope Depth 

Envelope Height 

21.83" 

9.67" 

Forced Air Cooling > 180 CFM (225-250 typical) 300 CFM (300-350 typical) 

Note 

At ambient temperatures ranging from 40 to 45°C, the 140 A cell frame is limited to 150% 

1 minute/10 minutes overload with a 130 Amp continuous rating

GenIV Core Configurations: 

Cells in Drive 

(without Redundancy) 

Output Voltage 

Available L-L 

(with O-M) 

Hp Range Power Cell Types (Continuous 

Current Rating) 

9 4000 V (4160 V) 200-1100 40, 70, 100, 140 

9 4000 V (4160 V) 800-2250 40, 70, 100, 140, 200, 260 

15 6600 V (6600 V) 300-3500 40, 70, 100, 140, 200, 260 

24 10000 V (11000 V) 600-6000 40, 70, 100, 140, 200, 260


ROBICON Perfect Harmony GenIV Cell Bypass Contactor A5E50124596, A5E40727031; A5E02634363, A5E32187356
ROBICON Perfect Harmony GenIV Cell Bypass Contactor A5E50124596, A5E40727031; A5E02634363, A5E32187356
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ROBICON Perfect Harmony GenIV Cell Bypass Contactor A5E50124596, A5E40727031; A5E02634363, A5E32187356

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