General Information; Typical Applications; Figure 1) - Pws-F In Parallel Operation; Figure 2) - Pws-F In Parallel Operation With Static Bypass Switch - Eltek Valere PWS Series User Manual

DC/AC Inverter
PWS series
User Manual
Page 6 (24)

2. General information

The PWS inverter family (1kVA–5kVA, 24V version max. 2.5kVA) is equipped with a 50Hz isolation trans-
former following a primary side pulse-width modulation stage and is available as 19"-compatible rack
(PWS-F) or wall mounted cabinet (PWS-W).
PWS inverters are especially suited for applications in power plants, industrial, railroad and shipping AC
power supplies. The combination of rugged mechanical construction, high overload ability and electrical
isolation between input and output offers a very high flexibility in system configuration.
The inverters can be operated as single unit or in parallel connection (as option) to provide power
increase or further improved reliability by (n+1)-redundancy. The operation in combination with a static
bypass switch (UNB) is also possible.
The PWS-F is fitted with a rear side connector, the PWS-W is fitted with screw terminals at the
bottom. All operation and indication elements are arranged at the front side.
The wall cabinet version includes all necessary input and output fuses and can be directly mounted
beside the load distribution. Optionally, versions with an included static bypass switch, special output
voltages, special output frequency or further special models are available on request.

2.1 Typical applications

Figure 1) - PWS-F in parallel operation

Figure 2) - PWS-F in parallel operation with static bypass switch

UNB
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