Function or quantity Trip and Signal relays
Current carrying capacity
Per relay, continuous
Per relay, 1 s
Per process connector pin, continuous
8 A
10 A
12 A
Max operations with load 1000
Max operations with no load 10000
Making capacity at inductive load with L/R > 10 ms
0.2 s
1.0 s
30 A
10 A
Breaking capacity for AC, cos j > 0.4
250 V/8.0 A
Breaking capacity for DC with L/R < 40 ms 48 V/1 A
110 V/0.4 A
125 V/0.35 A
220 V/0.2 A
250 V/0.15 A
Operating time < 6 ms
Maximum 72 outputs may be activated simultaneously with influencing factors
within nominal range. After 6 ms an additional 24 outputs may be activated. The
activation time for the 96 outputs must not exceed 200 ms. 48 outputs can be
activated during 1 s. Continued activation is possible with respect to current
consumption but after 5 minutes the temperature rise will adversely affect the
hardware life. Maximum two relays per BOM/IOM/SOM should be activated
continuously due to power dissipation.
The stated operate time for functions include the operating time for the binary
inputs and outputs.
22.2.9 Static binary output module (SOM)
SEMOD174197-1 v1
22.2.9.1 Introduction
SEMOD174196-4 v4
The static binary output module has six fast static outputs and six change over output relays for
use in applications with high speed requirements.
22.2.9.2 Design
SEMOD175385-4 v4
The Static output module (SOM) have 6 normally open (NO) static outputs and 6
electromechanical relay outputs with change over contacts.
The SOM consists mainly of:
• An MCU
• A CAN-driver
• 6 static relays outputs
1MRK 502 066-UUS B Section 22
IED hardware
1301
Technical manual
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