AC/DC power supply / DIN rail / digital / galvanically-isolated
DIN rail, digital, galvanically-isolated
The passive WG 25 repeater power supply is loop-powered. It is used for galvanic hazardous-area separation of a 2-wire supply line and transmits both 4 ... 20 mA and HART® signals in both directions. With a voltage drop of just 4.2 V, the WG 25 uses the supply optimally so that all common 2-wire transmitters can be connected.
Compared with active repeater power supplies, it has considerable price and reliability advantages. Multi-channel systems require only one central, safe-area power supply that does not even need protective separation.
Low-cost due to omission of the integrated power supply
No mains power required costs savings doe to lower wiring effort
No mains interference
Low power loss no unnecessary heating in the enclosure
Protective separation according to EN 61140: protection of the maintenance staff
and subsequent devices against excessively high voltages
HART® transmission: bi-directional point-to-point transmission of digital data
according to the HART® specification
EMC tested RFI suppressed and surge proof: reliable operation even
with electromagnetic interference
Maximum reliability: no maintenance work so the associated costs are not incurred