5
Connections
Fig. 2. Connection diagram for the voltage relay SPAU 331 C.
U
aux
Auxiliary supply voltage
A, B…F
Output relays
IRF
Self-supervision alarm
SGR
Switchgroup for programming of starting and tripping signals
U1
Residual overvoltage relay module SPCU 1 C6
U2
Undervoltage relay module SPCU 3C15
U3
Unoccupied module place
U4
Output relay module SPTR 6B3
U5
Power supply module SPGU 240A1 or SPGU 48B2
U6
Energizing input module SPTE 4B9
SPA-ZC_
Bus connection module
Rx/Tx
Optical fibre receiver (Rx) and transmitter (Tx) of the bus connection module
Summary of Contents for SPAU 331 C
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