Uninterruptible Motor Drives

Our UMD systems are ideal for critical processes, where interruptions to the power supply may cause serious damage or loss in production. They secure the motor drive, maintain full effect if there is a power shortage and create reliable, secure and profitable operations.

We provide non-stop power for your critical drives

Continuous power supply is essential for critical drives such as motors for lube oil pumps, cooling pumps and ventilation fans as power failures could cause enormous damage to equipment and people. We secure the critical functions of your processes with solutions that guarantee an uninterrupted power supply and keeps availability high at all times.

When it simply has to work, we have the solution

When you want to make sure that delicate processes that require high reliability simply do not break down, even if there is a power shortage – choose our UMD system. 

The UMD system runs continuously and switches instantly between mains and battery operation if the regular power supply goes down. Consequently the UMD supplies full power all the time and there is no need for start-up, as there is for a standby DC motor, which requires additional equipment to compensate for the lack of pressure during start-up. Faster and simpler maintenance through the use of standard units enables shorter downtime for servicing.

This means a quicker start, a higher availability and reductions in maintenance costs compared to if you use an extra standby system or a DC motor. And, since your operation can now be conducted more securely and reliably, you can focus on your core business and benefit financially from it as well.

Typical applications for UMD

Our solutions are designed for applications in power generation, hydro-, wind-, oil- and gas industry – sometimes in tough environments and harsh conditions. Typical drive applications are pumps, fans, valves and sluice gates.

Uninterruptible motor drive type UMD C100

UMD C100 is an uninterruptible drive system for three phase AC-motors from 2,2kW up to 30kW. UMD C100 is intended together with an external DC system 110/125VDC or 220VDC to provide uninterruptible motor drive and an AC-input as an option.

Uninterruptible motor drive type UMD S400

UMD S400 is a system intended for the uninterruptible operation of three phase AC-motors from 3kW up to 200kW. It is based on frequency converters that can be powered not only from the existing mains drive but also from batteries. The system contains the required number of drives, battery and internal distribution of AC, DC power and control circuits. The system is fed by one single or dual mains supply. Each output to the electrical motor is fully controlled by bus or hardwired interface and protection of cable and motor.

Technical data UMD C100

Input - 110VDC or 220VDC (Option 3x380-415VAC, 50Hz)

Output - 3x400VAC 50Hz

Enclosure - Wall mounted (2,2-7,5kW) or Floor cabinet (11-30kW)

Technical data UMD S400

Input - 3x380-415VAC, 3x440-480/600VAC 50-60Hz

DC-system - 440VDC, Battery types - Lead or alkaline, valve-regulated or free-venting

Output - 3x400VAC 50Hz

Output power per drive - 3 - 200kW

One or multiple drives in same enclosure

Enclosure - Floor cabinet 

Options

Output 3x380-415VAC, 3x440-480VAC/600VAC, 

Output 24VDC

Thermistor relay

Motor heater control

Key Features