Schweitzer Engineering Laboratories SEL-351 - General Specifications

Date Code 20001006 Introduction and Specifications 1-13
SEL-351 Instruction Manual
GENERAL SPECIFICATIONS
Important: Do not use the following specification information to order an SEL-351 Relay.
Refer to the actual ordering information sheets.
AC Voltage
Inputs
120 V
L-N
, three-phase four-wire connection. 150 V
L-N
continuous (connect
any voltage up to 150 Vac). 365 Vac for 10 seconds.
Burden: 0.13 VA @ 67 V; 0.45 VA @ 120 V.
300 V
L-N
(or 300 V
L-L
for delta-connected voltage inputs), continuous
(connect any voltage up to 300 Vac). 600 Vac for 10 seconds.
Burden: 0.03 VA @ 67 V; 0.06 VA @ 120 V; 0.8 VA @ 300 V.
AC Current
Inputs
5 A nominal: 15 A continuous, 500 A for 1 second, linear to 100 A
symmetrical. 1250 A for 1 cycle.
Burden: 0.27 VA @ 5 A, 2.51 VA @ 15 A.
1 A nominal: 3 A continuous, 100 A for 1 second, linear to 20 A
symmetrical.
250 A for 1 cycle.
Burden: 0.13 VA @ 1 A, 1.31 VA @ 3 A.
Sensitive Earth Fault:
0.05 A nominal channel IN current input: 1.5 A continuous, 20 A for 1
second, linear to 1.5 A symmetrical.
100 A for 1 cycle.
Burden: 0.0004 VA @ 0.05 A, 0.36 VA @ 1.5 A.
Frequency and
Rotation
60/50 Hz system frequency and ABC/ACB phase rotation are user-settable.
Frequency tracking range: 40.1 - 65 Hz (V
A
required for frequency
tracking).
Courtesy of NationalSwitchgear.com