Siemens Argus 7SR22 User Manual

7SR21 & 7SR22 Performance Specification
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2.25 50 AFD ARC Flash Detector
(Refer to 7XG31 Technical Manual for performance characteristics)
2.25.1 Reference
Parameter Value
50 AFD Setting 1, 2,...10 xIn
2.25.2 Operate and Reset Level
Attribute Value
I
op
Operate level
100 % Is, ± 10 %
Transient overreach (X/R £ 100) £ -30 %
Reset level
³ 95 % I
op
Repeatability
± 5 %
2.25.3 Operate and Reset Time
Attribute Value
t
basic
50AFD Overcurrent operate time 10 ms – 16 ms
t
op
AFD Zone operate time (Flash & 50AFD) 15 ms – 25 ms
Repeatability
± 10 ms
Disengaging time < 50 ms

Siemens Argus 7SR22 Specifications

General

Type	Feeder Protection Relay
Frequency	50/60 Hz
Binary Outputs	Up to 8
Current Inputs	1 A or 5 A
Communication	Ethernet, RS485
Protocols	Modbus, DNP3
Protection Functions	Overcurrent, Earth Fault, Thermal Overload
Operating Temperature	-25 to +70 °C
Humidity	5 to 95% non-condensing