BMR 4 / BMR 6 / HPR 6 / HPR 12 reactive power controllers
Country: Italy · Model: BMR 4 / BMR 6 / HPR 6 / HPR 12
The BMR 4, BMR 6, HPR 6 and HPR 12 controllers drive from 4 to 12 steps of a capacitor bank and maintain the set cos φ. They measure voltage, current, power factor, current THD and cabinet temperature, protect the bank in unacceptable modes, and suit both new compensation banks and the upgrading of existing ones.
- Steps
- BMR 4 — 4; BMR 6 — 6; HPR — 6 or 12
- Supply / measurement
- BMR — 400 V AC ±10 % (230 V to order); HPR — 90–550 V AC
- Frequency
- 50/60 Hz
- Current input
- BMR 0.3–5.5 A; HPR 0.015–6 A, CT ratio 1–9600
Technical specifications
| Steps | BMR 4 — 4; BMR 6 — 6; HPR — 6 or 12 |
|---|---|
| Supply / measurement | BMR — 400 V AC ±10 % (230 V to order); HPR — 90–550 V AC |
| Frequency | 50/60 Hz |
| Current input | BMR 0.3–5.5 A; HPR 0.015–6 A, CT ratio 1–9600 |
| cos φ setpoint | BMR 0.85 ind.…0.95 cap.; HPR 0.7 ind.…0.7 cap. |
| Mode | 2 or 4 quadrants, auto/manual |
| Display | BMR 4 — 7-segment LED; BMR 6 — LCD 2×16; HPR — backlit LCD |
| Communication | HPR — RS485 Modbus RTU |
| Enclosure | 96×96 mm (BMR), 144×144 mm (HPR) |
| Protection rating | IP41 (IP54 with cover) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The BMR 4 and BMR 6 are supplied from the measured voltage of 400 V AC ±10 % (230 V to order), 50/60 Hz, consume 3 VA and work in 2 or 4 quadrants, automatically or manually. The settings include the CT primary current from 5 to 10 000 A, the cos φ setpoint from 0.85 ind. to 0.95 cap., the step power of 0.1–6000 kvar, the reconnection time of 5–240 s, the capacitor voltage of 80–650 V, and the THDI, ventilation and overheating thresholds. The alarms cover voltage and current out of range, under- and overcompensation, excessive THD and overheating. The BMR 4 shows data on a 4-digit LED display, and the BMR 6 on a two-line backlit LCD, and it also measures P, Q, S and maximums. The relay contacts are rated 5 A (BMR 4) or 8 A (BMR 6) at 250 V AC, and the enclosure is 96 × 96 mm. The HPR 6 and HPR 12 in a 144 × 144 mm enclosure are supplied from 90–550 V AC, have relay or thyristor outputs, initialize the steps by themselves and switch off faulty ones.
How to choose
The deciding parameters are the number of steps and the need for a link to a control system. The BMR 4 and BMR 6 cover banks of 4 or 6 steps in a 400 V network, while the HPR 12 controls 12 steps and passes data over RS485 Modbus RTU. The HPR accepts CTs with a ratio of 1–9600 (up to 48 000/5 A), calculates true RMS values and THD up to the 19th harmonic, and its cos φ setpoint is wider, from 0.7 ind. to 0.7 cap.
Request a price and lead time
BMR 4 / BMR 6 / HPR 6 / HPR 12 reactive power controllers. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How many alarms does the HPR controller store?
The HPR remembers 10 alarms and calculates the capacitance loss, the number of switch-ons and the running time of each step, so it shows which capacitor is due for replacement.
What are the operating temperature and protection rating of the HPR controller?
The HPR works from −20 to +70 °C, its front has IP41, and with the cover IP54.
Can two target cos φ values be set on the HPR 12 controller?
Yes, the HPR switches between two cos φ setpoints on a signal at the digital input.
Which standards do the BMR and HPR controllers comply with?
The BMR comply with EN 61000-6-1…-4 and EN 60335-1, and the HPR are made to IEC 61010-1, IEC 61326-1 and UL 61010.
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