MVW01 G2 — medium-voltage frequency converter 2.3–6.9 kV, 500–22 500 hp
MVW01 G2 is a second-generation medium-voltage frequency converter for induction and synchronous motors at 2.3–6.9 kV with a power from 500 to 22 500 hp. It is installed on compressors, pumps, fans, conveyors and mills. On the same footprint as the first generation, the VFD delivers more power thanks to a new generation of high-voltage IGBTs with an extended safe operating area.
- Motor voltage
- 2.3; 3.3; 4.16; 5.5; 6.6; 6.9 kV
- Motor power (according to model tables)
- 500–22 500 hp
- Rated current (ND)
- 54–2850 A
- Output frequency
- 0…120 Hz
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The power section is built as a voltage source inverter with a multilevel NPC topology on 6.5 kV IGBTs and has a minimum number of power components. The new IGBTs withstand short circuits better. The operator interface is the same as in the manufacturer's low-voltage VFDs.
At the input there is a phase-shifting transformer with a 12-, 18-, 24- or 36-pulse rectifier, dry or oil-filled, for indoor or outdoor installation. This arrangement keeps a high power factor over the whole speed range, complies with IEEE 519, provides galvanic isolation and limits short-circuit currents. For four-quadrant operation an active front end (AFE) rectifier option is available. The DC link is built from film capacitors without electrolytes, a floating link reduces the stress on the motor insulation, and synchronous OPP™ PWM reduces motor current harmonics. The power modules are withdrawable, with plug-in contacts, fuseless, with arc and pressure sensors. Control signals travel by fiber optics, cooling is by air with redundant fans.
The output voltage is 2.3–6.9 kV, the frequency up to 120 Hz, and the motor power according to the model tables from 500 to 22 500 hp. Overload is 115 % (ND) or 150 % (HD) for 60 s every 10 minutes, with a rated ND current from 54 to 2850 A. Standard models are built for 3300, 4160, 6000–6300 and 6600–6900 V. There are integrated variants MVW01 Compact and MVWCi/MVWMi (400–3000 hp, 4.16 kV, 24-pulse rectifier), where the input load-break switch, vacuum contactor and transformer are assembled in one lineup. Efficiency is up to 99 %, up to 98 % with the transformer, degree of protection NEMA1/IP41, IP42 on request.
Control is scalar or vector, with or without a speed sensor. The VFD catches a spinning motor, rides through a brief loss of supply, restarts itself, protects against earth faults, keeps a log of the last 100 events, and has a PID controller and critical speed skip. Communication is through Modbus-RTU/TCP, Profibus-DP, DeviceNet, EtherNet/IP or CANopen, and setup is done in the free SuperDrive G2 software. Options include water cooling, an exciter for a synchronous motor, dv/dt and sine output filters, and synchronous transfer of motors to the grid.
The converter complies with IEC 61800-3, -4, -5, UL 347 and UL 347A and carries the CE mark. Every VFD undergoes a two-hour load test at the factory, and the whole system together with the switchgear, transformer and motor can be checked on the manufacturer's dynamometer test bench.
Technical specifications
| Motor voltage | 2.3; 3.3; 4.16; 5.5; 6.6; 6.9 kV |
|---|---|
| Motor power (according to model tables) | 500–22 500 hp |
| Rated current (ND) | 54–2850 A |
| Output frequency | 0…120 Hz |
| Topology | NPC voltage source inverter, 6.5 kV IGBTs |
| Rectifier | 12-, 18-, 24-, 36-pulse or AFE |
| Efficiency | up to 99 % (up to 98 % with transformer) |
| Overload | 115 % (ND) / 150 % (HD) for 60 s every 10 min |
| Supply voltage | as standard up to 13.8 kV, 50 or 60 Hz |
| Degree of protection | NEMA1/IP41 (IP42 on request) |
| Standards | IEC 61800-3, -4, -5; UL 347, UL 347A; CE |
Request a price and lead time
MVW01 G2 — medium-voltage frequency converter 2.3–6.9 kV, 500–22 500 hp. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8504 40 88 00 |
|---|---|
| HS, 6 digits | 8504 40 |
| CN (EU) | 8504 40 88 |
| HTSUS (USA) | 8504 40 95 80 |
| China customs tariff | 8504 40 99 99 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What motor voltage is MVW01 G2 designed for?
Output voltage is 2.3–6.9 kV, with standard models for 3300, 4160, 6000–6300 and 6600–6900 V. Motor power according to the model tables is from 500 to 22 500 hp.
What overload capability does the converter have?
In ND mode the overload is 115 %, in HD mode 150 % for 60 s every 10 minutes. Rated ND current is from 54 to 2850 A.
Is MVW01 G2 suitable for synchronous motors?
Yes, the VFD works with induction and synchronous motors, and an exciter for synchronous ones is among the options. Synchronous transfer of the motor to the grid is also possible.
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