7SR45 Performance Specification
© 2017 Siemens Protection Devices Limited Chapter 3 Page 5 of 10
Table 1-7 Binary Outputs
Number 2 (1 NO contact and 1 C/O contact)
Operating Voltage Voltage Free
Operating Mode Self reset/Hand reset
Operating Time from
energizing Binary Input
< 20 ms
Making Capacity:
Carry continuously
Make and carry
(L/R ≤ 40 ms and
V ≤ 300 V)
5 A AC or DC
20 A AC or DC for 0.5 s
30 A AC or DC for 0.2 s
Breaking Capacity
( ≤ 5 A and ≤ 125 V DC,
250 V AC):
AC Resistive
AC Inductive
DC Resistive
DC Inductive
1250 VA
250 VA at p.f. ≤ 0.4
75 W
30 W at L/R ≤ 40 ms
50 W at L/R ≤ 10 ms
Table 1-8 Front Communication Port
Quantity 1
Electrical connection USB, Type B
Table 1-9 Data Storage
Fault Record 10 records
Events 100 events (1 ms resolution)
Table 1-10 Environment
Altitude above sea level Maximum upto 2000 m
1.3 Environmental Performance
This section describes about the environmental tests performed with 7SR45 Self Powered relay under different
conditions.
Table 1-11 Mechanical Tests
Type Test Reference Requirement
Vibration
IEC60255-21-1
Class 1
( Endurance 1g, Response 0.5g)
Shock and Bump IEC 60255-21-2 Shock response, Class I
Shock withstand, Class I
Bump, Class I
Degree of Protection IEC 60529 IP52 front
IP20 rear
Seismic IEC 60255-21-3, Class I In single axis sine sweep in X-axis
Sweep (@ a sweep rate of 1 octave/min)
vibration in the frequency range
(1 Hz - 35 Hz) at amplitude of 3.5 mm or 1.0 gn
(whichever is less)
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