9171000990 Rev E BE1-50 General Information 1-5
Power Supply
Externally powered power supply types are listed in Table 1-2.
Table 1-2. Power Supply Ratings
Type
Nominal
Input Voltage
Input Voltage Range Burden at Nominal
O (midrange) 48 Vdc 24 to 150 Vdc 1.2 W
125 Vdc 24 to 150 Vdc 1.5 W
P (midrange)
120 Vac 90 to 132 Vac 19.3 VA
R (low range) 24 Vdc
12 to 32 Vdc ∗
1.3 W
48 Vdc 24 to 150 Vdc 1.2 W
S (midrange)
125 Vdc 24 to 150 Vdc 1.5 W
250 Vdc 68 to 280 Vdc 1.7 W
T (high range)
240 Vac 90 to 270 Vac 31.6 VA
∗ Type R power supply initially requires 14 Vdc to begin operating. Once operating, the input voltage may
be reduced to 12 Vdc and operation will continue.
Target Indicators
Electronically latched, manually reset target indicators are optionally available to indicate closure of the
trip output contacts. Either internally operated or current operated targets may be specified. Internally
operated targets should be selected when normally closed (NC) output contacts are specified.
Current Operated Targets
Minimum Rating: 200 mA flowing through the trip circuit
Continuous Rating: 3 A
1 Second Rating: 30 A
2 Minute Rating: 7 A
Type Tests
Shock: Withstands 15 G in each of three mutually perpendicular planes
without structural damage or performance degradation.
Vibration: Withstands 2 G in each of three mutually perpendicular planes,
swept over the range of 10 to 500 Hz for a total of six sweeps, 15
minutes each sweep, without structural damage or degradation of
performance.
Dielectric Strength: Tested in accordance with IEC 255-5 and IEEE C37.90. All circuits to
ground: 2,121 Vdc. Input to Output circuits: 1,500 Vac/2,121 Vdc.
Radio Frequency Interference: Maintains proper operation when tested for interference in
accordance with IEEE C37.90.2-1987, Standard Withstand
Capability of Relay Systems to Radiated Electromagnetic
Interference from Transceivers.
Surge Withstand Capability: Qualified to IEEE C37.90.1-1989, Standard Surge Withstand
Capability (SWC) Tests for Protective Relays and Relay Systems.
Physical
Temperature
Operating Range: –40 to 70°C (–40 to 158°F)
Storage Range: –65 to 100°C (–85 to 212°F)
Weight: 17.5 lb (7.76 kg)
Case Size: S1 (Refer to Section 4 for case dimensions.)
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