8
The output relay module SPTR 5B4 of the
biased differential relay SPAD 330 C is located
together with the power supply module, behind
the system front panel, which is fixed with four
cross-slotted screws. The output relay module
contains the output relays and the control
circuits of these relays. The output relay module
forms a separate, withdrawable relay module.
Output relay
module
The incoming and outgoing signals of the
output relay module are firmly related to the
module locations of the relay case. The output
signals from each module location are
individually routed to the output relay module.
Therefore, it is important that the relay modules
are plugged into the relay case in the order
illustrated in the figure on Page 1. This ensures
that the function of the relay corresponds to the
connection diagram of the relay unit.
Fig. 6. Block diagram of output relay module SPTR 5B4.
1
U4
SPTR5B4
A
E
IRF
TS/U1
TS/U2
TS/U3
ENA
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