POLB HD / POLB SHD, ELEFP cylindrical LV power factor correction capacitors 230–690 V
Country: Spain · Model: POLB HD / POLB SHD / ELEFP
The three-phase cylindrical POLB HD capacitors for 230–690 V and 2.5–50 kvar are designed for heavy duty and high temperatures, and the range is supplemented by compact POLB SHD of 0.5–7.5 kvar and single-phase ELEFP. They are used for compensation in 0.4–0.69 kV networks, individual motor compensation, automatic BATM and BATLV banks and the repair of capacitor banks.
- POLB HD: voltage / power
- 230, 440, 460, 525, 690 V; 2.5–50 kvar
- POLB SHD
- 230–440 V, 0.5–7.5 kvar, 50/60 Hz
- ELEFP (single-phase)
- 230/400/440/480/525 V, 50/60 Hz
- Current overload
- POLB HD 1.8 In; SHD 2 In; inrush up to 400 In
Technical specifications
| POLB HD: voltage / power | 230, 440, 460, 525, 690 V; 2.5–50 kvar |
|---|---|
| POLB SHD | 230–440 V, 0.5–7.5 kvar, 50/60 Hz |
| ELEFP (single-phase) | 230/400/440/480/525 V, 50/60 Hz |
| Current overload | POLB HD 1.8 In; SHD 2 In; inrush up to 400 In |
| Overvoltage | 1.1 Un 8 h/day; 1.15 — 30 min; 1.2 — 5 min; 1.3 — 1 min |
| Filling | inert gas N₂ (POLB HD/SHD), dry type without PCB |
| Protection | self-healing, internal element fuses, pressure-sensitive disconnector (3 phases) |
| Losses | < 0.2 W/kvar (dielectric); 0.4 W/kvar (total) |
| Service life | up to 150 000 h (SHD) |
| Standard | IEC 60831 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The dielectric is a low-loss self-healing metallized polypropylene film. The aluminium can of the POLB HD/SHD is filled with inert nitrogen, so it is a dry type without PCB, and the M12 bolt both fixes and earths the capacitor. Internal faults are guarded against by film self-healing, fuses on individual elements and an overpressure disconnection system that breaks all three phases. Cables are led into a terminal block for a cross-section of 16–35 mm², and a QR code on the plate opens the individual acceptance test report. The POLB HD at 50 Hz carries 1.8 In continuously, withstands an inrush of 400 In, has an insulation level of 3/8 kV, a capacitance tolerance of −5/+10 %, dielectric losses below 0.2 W/kvar and total losses of 0.4 W/kvar. The capacitor allows 10 % overvoltage for up to 8 h per day, 15 % for 30 min, 20 % for 5 min and 30 % for 1 min. The single-phase ELEFP has an aluminium can with a pressure disconnection device, an M12 bolt and 6.3 × 0.8 mm Faston terminals.
How to choose
The voltage is chosen taking reactors and harmonics into account, the POLB HD has a range of 230, 440, 460, 525 and 690 V, and a 60 Hz version is made separately. For small compensation at 230–440 V the POLB SHD is more convenient, with a 2 In overload and a design service life of 150 000 hours. The single-phase ELEFP for 230/400/440/480/525 V is taken for single-phase loads and for building a bank from single-phase units. The obsolete POLT series is replaced by the POLB HD 440 V, and when a prismatic case and up to 100 kvar in one unit are needed, the FML is suitable.
Request a price and lead time
POLB HD / POLB SHD, ELEFP cylindrical LV power factor correction capacitors 230–690 V. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How long does a POLB HD capacitor take to discharge after disconnection?
Units up to 30 kvar discharge to 50 V in 1 min, and units from 33 to 50 kvar to 75 V in 3 min. The POLB SHD has built-in discharge resistors of 75 V/3 min.
Do POLB capacitors contain oil or PCB?
No, the can of the POLB HD and SHD is filled with inert gas N₂, so there is no liquid in the capacitor that could leak out.
What current overload can the POLB SHD withstand?
The POLB SHD withstands 2 In continuously and the POLB HD 1.8 In, and the current inrush for both is up to 400 In.
Which standard do the POLB HD and ELEFP capacitors comply with?
The POLB HD, POLB SHD and ELEFP capacitors are made to IEC 60831.
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