ESR-3P-T1F — three-phase static voltage stabiliser 6–400 kVA
Country: United Kingdom · Model: ESR-3P-T1F
The ESR-3P-T1F holds three-phase voltage to ±3 % with grid fluctuations of up to ±50 %, with power from 6 to 400 kVA. The unit is installed at the supply of a building, workshop or server room so that the load does not feel sags and surges.
- Power
- 6–400 kVA
- Grid
- 380–415 V (H/HD), 190–240 V (LY/LD), 440–600 V (HX/HXD)
- Input voltage range
- up to ±50 %
- Output accuracy
- ±3 % by default, adjustable
Technical specifications
| Power | 6–400 kVA |
|---|---|
| Grid | 380–415 V (H/HD), 190–240 V (LY/LD), 440–600 V (HX/HXD) |
| Input voltage range | up to ±50 % |
| Output accuracy | ±3 % by default, adjustable |
| Connection | 3 phases, 4 wires (with neutral) or 3 wires |
| Protection | lightning protection, manual and automatic bypass |
| Version | IP20; option IP54 / NEMA 3 |
Ukrainian replacement/analogue
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Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Regulation is fully electronic, with no servo drive. Connection is possible with a four-wire scheme with neutral, or a three-wire one when the load does not need a neutral, for example for motors. The grid options are designated by letters: H/HD for 380–415 V, LY/LD for 190–240 V and HX/HXD for 440–600 V. The factory accuracy of ±3 % can be changed in the settings to suit the equipment requirements. The input is protected by lightning protection. A manual bypass takes the unit out for maintenance, and an automatic one switches the load without staff involvement. To order, the stabiliser is supplied with an isolation transformer, and then it works as a power conditioner in an IP20 or IP54 / NEMA 3 enclosure.
How to choose
For powers above 400 kVA the manufacturer offers the ESR-3P-T2F/T3F for 450–3125 kVA with independent per-phase regulation. A single-phase line up to 100 kVA is better protected by the ESR than by a three-phase unit. The variant letter is determined by the grid voltage, and the 3- or 4-wire scheme depends on whether the load needs a neutral.
Request a price and lead time
ESR-3P-T1F — three-phase static voltage stabiliser 6–400 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What output voltage accuracy does the ESR-3P-T1F give?
±3 % from the factory, and the parameter is adjustable. The input grid can deviate by up to ±50 % meanwhile.
Can the ESR-3P-T1F be connected without a neutral?
Yes, besides the 4-wire scheme with neutral there is a 3-wire connection for loads that do not need a neutral.
What do the letters H, LY and HX mean in the variant designation?
They are grid variants. H/HD for 380–415 V, LY/LD for 190–240 V and HX/HXD for 440–600 V.
Does the ESR-3P-T1F stabiliser have a bypass?
Yes, both manual and automatic. The manual one is used during maintenance and the automatic one operates by itself.
What is the maximum power of the ESR-3P-T1F?
The range ends at 400 kVA. Larger sites are covered by the ESR-3P-T2F/T3F series for 450–3125 kVA.
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