TSO industrial voltage stabilizer in an enclosure up to IP65, from 5 kVA

Country: · Model: TSO

TSO servo-driven voltage stabilizer in a sealed enclosure up to IP65, single-phase versions from 5 kVA, three-phase from 30 kVA. Output accuracy is better than ±0.5% from no load to full load, efficiency is 98% at full load. The enclosure keeps out dust, sand, insects and moisture, so the unit is installed in the open air without a separate room.

Power: single-phase from 5 kVA, three-phase from 30 kVA
Output voltage: 220/230/240 V; three-phase 380/400/415 V
Input voltage range: standard: −17.5…+7.5% / ±12.5% / −7.5…+17.5%; extended: −21…+9% / ±15% / −9…+21%
Output accuracy: better than ±0.5% from no load to full load

Request a quote All specifications

Technical specifications

Power	single-phase from 5 kVA, three-phase from 30 kVA
Output voltage	220/230/240 V; three-phase 380/400/415 V
Input voltage range	standard: −17.5…+7.5% / ±12.5% / −7.5…+17.5%; extended: −21…+9% / ±15% / −9…+21%
Output accuracy	better than ±0.5% from no load to full load
Efficiency	98% at full load
Overload	1000% for 2 s, 300% for 2 min
Surge protection	IEEE 587 cat. A
Protection degree	up to IP65, outdoor installation
Operating temperature	−5…+45 °C (with load derating up to +60 °C)

Ukrainian replacement/analogue

Specifications are taken from the manufacturer’s technical documentation. Updated 11/08/2026.

Description

This is a fully enclosed electromechanical stabilizer for harsh conditions, where an ordinary IP20 cabinet quickly clogs with dust or sand. Outdoor installation is allowed, the operating temperature is −5…+45 °C, and up to +60 °C the unit works with load derating. The output voltage is 220/230/240 V in single-phase versions and 380/400/415 V in three-phase versions. Standard input ranges can be asymmetric, −17.5…+7.5% or −7.5…+17.5%, and suit networks where the voltage is consistently low or high; the symmetric option is ±12.5%. Extended ranges reach −21…+9%, ±15% and −9…+21%. The overload capacity of 1000% for 2 s and 300% for 2 min covers the starting currents of motors and transformers. Surge protection complies with IEEE 587 cat. A. There is a version with energy-saving stabilization at reduced voltage, where the output is held below nominal.

How to choose

First determine the load power and the number of phases. A single-phase unit is chosen from 5 kVA, a three-phase unit from 30 kVA. Then look at the actual voltage deviations at the connection point. If the network is mostly low, the standard range −17.5…+7.5% or the extended range −21…+9% will suit better than the symmetric one. For a room with no dust-protection requirements, consider the TS (single-phase, 0.99–48.6 kVA). When ±0.1% accuracy is needed, look at the TSP at 1–100 kVA, and for contactless operation with no moving parts, the SVR at 5–400 kVA.

Request a price and lead time

TSO industrial voltage stabilizer in an enclosure up to IP65, from 5 kVA. We reply within one business day.

Or email office@usk.ua or call +38 (044) 339-50-20.

FAQ

Can the TSO stabilizer be installed on an open site?

Yes, the enclosure up to IP65 protects against dust, sand, insects and moisture, and outdoor installation is expressly provided for. The operating temperature is −5…+45 °C, up to +60 °C with load derating.

What is the output voltage accuracy of the TSO?

Better than ±0.5% from no load to full load. Efficiency at full load is 98%.

What overload can the TSO withstand?

1000% for 2 s and 300% for 2 min. This matters for loads with a high starting current.

Which input voltage ranges are available for the TSO?

Standard: −17.5…+7.5%, ±12.5% and −7.5…+17.5%. Extended: −21…+9%, ±15% and −9…+21%.

From what power are single-phase and three-phase TSO units made?

Single-phase from 5 kVA with 220/230/240 V output, three-phase from 30 kVA with 380/400/415 V output.