| Brand | ROCKWILL |
| Model NO. | PQflexC Series Hybrid PQflexC Series Hybrid capacitor bankbank |
| Rated voltage | 400V |
| Mounting type | rackmounting |
| Rated capacity | 100kVA |
| Series | PQflexC Series |
Stepless reactive power compensation for both inductive and capacitive loads, to meet a desired power factor PQflexC can perform precise stepless reactive power compensation of both inductive and capacitive loads. The target power factor is programmable from 0.6 (inductive) to 0.6 (capacitive) which makes PQflexC a superior alternative to a conventional capacitor bank. This also allows compensation of loads fed by generators without the risk of overcompensation.
An economic way of stepless power factor control Customers can set-up a capacitor bank with 1 PQflexC module and several capacitor steps1. This way, any capacitor bank with
steps can be converted into one that has 'stepless behavior' as the active part will smoothen out the step changes, when the rating of that PQflexC module (active part) is at least equal or bigger than the size of a single capacitor step (passive part).
Enhanced communication features
Wi-Fi enabled modules allow users to monitor and set parameters via smartphone or computer
The optional 7-inch user-friendly HMI interface offers direct access to the equipment control for parameters setting and system monitoring.
The unique modularity feature of the PQflexC allows several combinations depending on the type of application. The modular units are available at 30 kvar, 75 kvar and 100 kvar in module, wall-mounted solution or a standalone cabinet.
● Modular design: Suitable for OEMs, LV switchgear and drive manufacturers
● Very compact: Can be integrated into a small cubicle, either vertically or horizontally
● Low losses: Reduced losses and in-built forced air cooling
● Distributed solution: For building applications where space restrictions exist
● Easy to install thanks to wall-mounting kit
● Silent solution: <65dBA, perfect solution for installing on office floors
PQflexC - C - Standalone cabinet
● Complete solution: Factory made fully functional tested panel
● A bank with several PQflexC modules, but without any capacitor steps
● A hybrid bank with 1 PQflexC module and several capacitor steps, where PQflexC will play the role of power factor controller to switch the steps of capacitor units
● Flexibility: Rating can be extended in modular way up to 300 kvar in single cabinet
Technology parameters
Specifications — PQflexC - M Module
Electrical characteristics
| Item | Value |
|---|---|
| Connection method | 3-wire/ 4-wire |
| Network voltage (+/- 10%) | 208-480 V (3-Wire) 208-415 V (4-Wire) |
| Network frequency (+/- 5%) | 50/60 Hz |
| Rated output (kvar) (at 400 V) | 30 kvar, 75 kvar, 100 kvar |
| Neutral current rating per base unit (A) | Same as the line current rating |
| Inverter technology | Three level inverter |
| Switching frequency of semiconductors | 18 kHz |
| Modularity | Up to 16 modules can be combined. Different module rating allowed |
| Redundancy | Any unit can become a master (defined as lowest ID that is operational) In case of failure, another unit takes the lead as master |
| Equipment losses | <2.2% of the equipment power typically |
| Item | Value |
|---|---|
| Numbers of steps | 6 output relays per module |
| External capacitor step sequence | User selectable |
| CT configuration | Closed or open loop |
| Reaction time of PQflexC module | 110 µs |
| Response time of PQflexC module | <1 second |
| Item | Value |
|---|---|
| Target power factor | Programmable from 0.6 (inductive) to 0.6 (capacitive) |
| Item | Value |
|---|---|
| Wi-Fi communication | Webserver on smartphone or computer for simple diagnostics and parameters setup |
| USB | With dedicated optional software (servicing/ programming) |
| HMI (optional) | 7-inch color TFT screen (800 x 480 pixels) 198 x 141 x 40 mm IP65 front side / IP20 backside CAN 2B (internal) – RJ12 for communicating with units Ethernet (Modbus TCP) – RJ45 USB 2.0 |
| Digital I/O on HMI | 2 insulated digital inputs 24 V (AC or DC) 6 digital NO outputs – 250 Vac/ 5 A (one common polarity), dry contacts |
| Item | Value |
|---|---|
| Mounting | Module, suitable to integrate into a cabinet |
| Approximate dimensions (W x D x H) | 30 kvar: 435 x 459 x 130 mm 75 kvar and 100 kvar: 504 x 558 x 300 mm |
| Color | Surface treated metal frames Front side painted RAL 7035 |
| Item | Value |
|---|---|
| Altitude | Indoor installation in clean environment up to 1000 m altitude |
| Ambient temperature | −10 °C to 40 °C during operation (up to 50 °C with auto-derating)
−25 °C to 70 °C during storage |
| Humidity | Max. 95% non-condensing during operation Max. 85% non-condensing during storage |
| Fixation | Special kit allows module to be integrated into cabinet |
| Cable entry | Rear for power cables Front for control cables |
| CT requirements | 3 CT's are required (class 1.0 or better, 15 VA) |
| IP protection | IP20 from front access |
| Item | Standard |
|---|---|
| General construction and safety aspects for PQflexC - M | EN 62477-1 (2012) "Safety requirements for power electronic converter systems and equipment" |
| General construction and safety aspects for PQflexC - WM and PQflexC - C | EN 61439-1 (2011) "Low-voltage switchgear and control gear assemblies – Part 1: General rules" |
| EMC immunity (CE version only) | EN/ IEC 61000-6-2, Industrial level |
| EMC emissions (CE version only) | EN/IEC 61000-6-4, Class A |
CE
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