Chapter 3 - 7SR45 Performance Specification
©2018 Siemens Protection Devices Limited
Chapter 3 Page 4 of 14
Table 1-2
Sensitivity
Minimum phase current
for relay operation
20 % of nominal current in single phase
10 % of nominal current in three phases
Table 1-3
Mechanical Specifications
Design
Panel mounting, Non draw-out polycarbonate moulded case
Enclosure
IP 52 (front panel)
IP 40 (enclosure sides)
IP 20 (rear side)
Depth is 203 mm
Weight
1.97 kg (appx)
Table 1-4
7SR4501/7SR4502/7SR4503/7SR4504 Argus Self/Dual Powered Relay
Recommended Terminal Lugs Specifications
Terminal Blocks
Type/Cable Specifications
Current Inputs
TE connectivity PIDG series insulated tin plated crimp ring terminal,
M3.5 stud size, 2.6 mm² to 6.6 mm², 12 AWG
Auxiliary Supply
Insulated tin plated crimp pin connector, 2.6 mm² to 6.6 mm², 12 AWG
to 10 AWG
Rear Communication
Port
Pin type lug/1.5 mm
2
control cable
Front Communication
Port
USB, Type B
Binary Input/ Binary
Output/Pulse Output/
Flag Output
Insulated tin plated crimp pin connector, 2.6 mm² to 6.6 mm², 12 AWG
to 10 AWG
Ground Terminal
Tin plated crimp ring terminal, M3 stud size, 4 mm² to 6 mm², 12 AWG
to 10 AWG, Yellow
Table 1-5
Auxiliary Supply
Rated Voltage
60 V to 240 V AC/DC,
Tolerance – 20 % to +10 %
24 V to 60 V DC
Tolerance – 20 % to +10 %
(ordering option)
Frequency
50 Hz (Range: 45 Hz to 55 Hz)
60 Hz (Range: 54 Hz to 66 Hz)
Allowable Alternating
component in DC
(Ripple)
15 % of DC voltage
Typical Power
consumption (DC)
Typical Power
consumption (AC)
< 7 W
< 12 VA
Max Interruption time
(Collapse to Zero)
≤
20 ms (19.2 V DC)
≤
20 ms (48 V DC)
≤
500 ms (230 V AC)
