Environmental Withstand - Siemens 7SG164 Ohmega 400 Series Manual

Reset/Operate Voltage Ratio
Status Input Performance (110V and 220V)
Minimum DC current for operation
Reset/Operate Voltage Ratio
NB Status operating voltage need not be the same as the main energising voltage. 48/54 volt rated status inputs
can be supplied with external dropper resistors, for use with 110V or 220V dc supplies, as follows:-
Status Input External Resistances
Nominal Voltage
110/125V
220/250V
Two types of status inputs are provided, viz:-
a) High speed status inputs.
Typical response time
Typical drop off time
Typical response time when programmed to energise
an output relay contact
b) Scheme status inputs. These status inputs will not respond to either 250V RMS 50/60 Hz applied for 1
second or to the discharge of a 10µF capacitor charged to maximum DC auxiliary supply voltage.
Typical response time
Typical Drop off time
Typical response time when programmed to energise
an output relay contact
11

Environmental Withstand

Temperature - IEC 6068-2-1/2
Operating range
Storage range
Humidity - IEC 6068-2-3
Operational test
Transient Overvoltage –IEC 60255-5
Between all terminals and earth or between any two
independent circuits without damage or flashover
Insulation - IEC 60255-5
Between all terminals and earth
Between independent circuits
Across normally open contacts
High Frequency Disturbance -
IEC 60255-22-1 Class III
2.5kV Common (Longitudinal) Mode
1.0kV Series (Transverse) Mode
Electrostatic Discharge -
IEC 60255-22-2 Class III
8kV contact discharge
Radio Frequency Interference -
IEC 60255-22-3 Class III
©2011 Siemens Protection Devices Limited
7SG164 Ohmega 400 Series Performance Specification
≥ 90%
1mA
≥ 90%
Resistor Value; Wattage
2k7 ± 5% ; 2.5W
8k2 ± 5% ; 6.0W
<5ms
<5ms
<10ms
<25ms
<25ms
<30ms
-10°C to +55°C
-25°C to +70°C
56 days at 40°C and 95% RH
5kV 1.2/50µs 0.5J
2.0kV rms for 1 min
2.0kV rms for 1 min
1.0kV rms for 1 min
Variation
≤ 3%
≤ 3%
Variation
≤ 5%
Variation
Chapter 5 Page 10 of 13