Static Var Generator (SVG) for higher energy efficiency and load balancing
The EPCOS Static Var Generator PQvar makes energy more efficient by stepless power factor correction.
Overview
PQvar is a new approach to power factor correction and load balancing. The modular design and compact structure make it the ideal solution for active stepless PFC and load balancing in industrial applications and commercial buildings. Compared to conventional PFC systems, PQvar offers a response time of less than 15 ms and a dynamic reaction time of less than 50 µs. It can compensate both inductive and capacitive loads and achieve a power factor of 0.99.
By means of the Advanced Multi Controller (AMC), PQvar can be combined with conventional passive LV-compensation stages. The MV-level is covered by systems for 6 kV, 10 kV and 35 kV, with outputs of between 2000 kvar and 12,000 kvar. All modules are available for 3-phase grids with or without neutral conductors. Depending on customer requirements for output and size, the modules are designed as slide-in units for control cabinets, as wall-mounted units for LV-systems or as control cabinets for MV-systems.
The 3P3W (three phase three wire) PQvar can balance load currents between phases, the 3P4W (three phase four wire) type may additionally reduce neutral conductor currents. Therefore, PQvar is perfect solution at applications having reactive power requirements along with unbalanced loads, which is the case at e.g electricity distribution lines in rural areas, or different industrial applications.
Technical Data
Technical data and specifications | |||||
|---|---|---|---|---|---|
Rated voltage (range) | 200 V | 400 V | 480 V | 600 V | 690 V |
Individual module capacity (kvar) | 30, 60, 120 | 30, 50, 100, 200 | 40, 80 | 50, 100 | 60, 120 |
Mains frequency | 50/60Hz (range: 45 ... 65 Hz) | ||||
Parallel operation | < 15 ms | ||||
Overall efficiency | > 97% | ||||
Power grid structure | 3P3W / 3P4W | ||||
Current transformers | 150/5 ... 10 000/5 | ||||
Circuit topology | 3 level | ||||
Cooling mode | Smart air cooling: 110 L/sec to 500 L/sec, depending upon the models | ||||
Target power factor | Adjustable from -1 ... +1 | ||||
Cabinet mounting | Floor-mounted, wall-mounted | ||||
Communication ports | RS485, and network port | ||||
Communication protocols | Modbus | ||||
Noise level | < 65 dB (depending on the model) | ||||
Protection functions | Overvoltage, undervoltage, short-circuit, inverter bridge invense, over-compensation | ||||
Operating temperature | -10 ... +40 (higher temperatures with derating) | ||||
Relative humidity | 5 ... 95%, non-condensing | ||||
Protection class | IP20 (other IP classes are customizable) | ||||
Panel color | RAL7035 light grey | ||||
Altitude | 1500 m, 1% derating per 100 m plus | ||||
EMC requirements | EN 6100_6_2(2005) / EN55011, GROUP1, CLASS A IEC 61000_6_2 (1999) / CISPR11, CROUP1, CLASS A | ||||
Compliance with standards | EN 50178:1997 / IEC 50178:1997, EN 50091-3 / IEC 62040-3 / AS 62040-3(VFI SS 111) | ||||
Compensation
Technical Data
Hybrid PFC-Solution - SVG PQvar and classic PFC by Advanced Multi Controller (AMC) | |
|---|---|
Operating voltage | 24 V DC |
| Compensation performance | |
Target PF | –1 … +1 |
Reactive power compensation rate | > 99% (target PF is 1) |
Response time | < 15 ms |
Reaction time | < 50 μs |
| Capacitor switching performance | |
Compensation method | Three-phase/ split/ mixed compensation |
Capacitance coding method | Optional |
Capacitor switching method | Stack/ normal/ cycle/ individual |
Switching manner | Auto/ manual |
| External ports | |
RS485 port 1 | Communication with SVG modules |
RS485 port 2 | External communication port |
Network port | External communication port |
USB port | Code upgrading port |
Temperature detection | Measuring system’s operating temperature or ambient temperature |
Fan controlling dry contact | Controlling SVC cooling fan |
Alarm indicator dry contact | For reserved external alarm indicator |
Control output - contact steps | Control outputs, up to 18 at most Contact support: 120 V AC / 10 A, 220 V AC / 8 A, 400 V AC / 3 A, 110 V DC / 0.2 A, 60 V DC / 0.6 A, 24 V DC / 5 A Level signal: 12 V DC / 30 mA |
Reserved dry contact | One input / one output |
Communication protocol | Modbus |
Protection functions | Undervoltage, overvoltage, underfrequency, overfrequency, phase failure, high harmonic voltage,SVG overload, SVG overtemperature |
Display | 7” touch screen |
| Installation requirements | |
Power consumption | < 25 W |
Protection class | IP41 for the front panel, and IP20 for the rear panel |
| Operating environment | |
Ambiet temperature | –20 … +60 °C |
Altitude | ≤ 2500 m |
Humidity | ≤ 95% |
Storage temperature | –40 … +70 °C |
CT ratio | 150/5 … 10000/5 |