MWS

KEY FEATURES

  • Product replaced by the new MWS 84 873 029
FunctionNominal voltage (V)OutputCode
Phase sequence and failure3 x 208 →3 x 480 V ∿1 single pole changeover relay84873020

Specifications


Supply voltage Un 3 x 208 →3 x 480 V ∿ *
Operating range 183 →528 V ∿

Measurement ranges 183 →528 V ∿

Weight 80 g

* 3-phase mains with earth







Technical sketches

3-phase network control relays monitor the sequence of phases L1, L2, L3 and failure of one or more phases. LEDs are used for signalling.

MWS-MWS2 - Phase failure and sequence

MWS-MWS2 - Phase failure and sequence
Legend
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MWS : Relay R MWS2 : Relays R1/R2
2-
Response time on appearance of a fault (Tr)
The relay monitors its own supply voltage. The relay controls  :   - correct sequencing of the three phases, - total failure of one of the three phases. When the phase sequence and voltages are correct (> 183 V∿), the output relay (s) are closed and the yellow LED is lit. In the event of a phase sequence or total phase failure fault (detected when one of the voltages drops below 100 V), the relay opens instantly and its LED is extinguished. When the unit is powered up with a measured fault, the relay stays open.

MWS-MWS2

MWS-MWS2

MWS

MWS
Legend
1-
100 mA fast-blow fuse
PH RMC2 MWS

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