Schweitzer Engineering Laboratories SEL-351-5, Instruction Manual

Page: 35 / 706

1.13
Date Code 20070117
Instruction Manual SEL-351-5, -6, -7 Relay
Introduction and Specifications
Specifications
Specifications
Important: Do not use the following specification information to
order an SEL-351. Refer to the actual ordering information sheets.
Section 1 Introduction and Specifications U.Instruction Manual
``
General
Terminal Connections
Note : Terminals or stranded copper wire. Ring terminals are
recommended. Minimum temperature rating of 105ºC.
Tightening Torque, Terminal Block:
Minimum: 8 in-lb (0.9 Nm)
Maximum: 12 in-lb (1.4 Nm)
Tightening Torque, Connectorized
®
:
Minimum: 4.4 in-lb (0.5 Nm)
Maximum: 8.8 in-lb (1.0 Nm)
AC Voltage Inputs
150 V
L-N
, three-phase four-wire (wye) connection or 150 V
L-L
,
three-phase three-wire (open-delta) connection (when available,
by global setting PTCONN = DELTA)
Continuous: 150 V (connect any voltage from 0 to
150 Vac)
365 Vac for 10 seconds
Burden: 0.13 VA @ 67 V; 0.45 VA @ 120 V
300 V
L-N
, three-phase four-wire (wye) connection or 300 V
L-L
,
three-phase three-wire (open-delta) connection (when available,
by global setting PTCONN = DELTA)
Continuous: 300 V (connect any voltage from 0 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
IA, IB, IC, and neutral channel IN:
5 A nominal: 15 A continuous, 500 A for 1 s,
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 s,
linear to 20 A symmetrical,
250 A for 1 cycle
Burden: 0.13 VA @ 1 A, 1.31 VA @ 3 A
Additional neutral channel IN options
0.2 A nominal
neutral channel
(IN) current input:
15 A continuous, 500 A for 1 second,
linear to 5.5 A symmetrical
1250 A for 1 cycle
Burden: 0.002 VA @ 0.2 A, 1.28 VA @ 15 A
0.05 A nominal
neutral 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
Note: The 0.2 A nominal neutral channel IN option is used for
directional control on low-impedance grounded, Petersen Coil
grounded, and ungrounded/ high-impedance grounded systems
(see
Table 4.1 ). The 0.2 A nominal channel can also provide non-
directional sensitive earth fault (SEF) protection.
The 0.05 A nominal neutral channel IN option is a legacy non-
directional SEF option.
Power Supply
Rated: 125/250 Vdc or Vac
Range: 85–350 Vdc or 85–264 Vac
Burden: < 25 W
Rated: 48/125 Vdc or 125 Vac
Range: 38–200 Vdc or 85–140 Vac
Burden: < 25 W
Rated: 24/48 Vdc
Range: 18–60 Vdc polarity dependent
Burden: < 25 W
Frequency and Rotation
Note: 60/50 Hz system frequency and ABC/ACB phase rotation
are user-settable.
Frequency
tracking range:
40.1–65 Hz (V
A
or V
1
[positive-
sequence voltage] required for
frequency tracking; tracking switches
to V
1
if V
A
<20 V for 300 V
L-N
voltage inputs [or V
A
<10 V for
150 V
L-N
voltage inputs]).
Output Contacts
Standard:
Make: 30 A
Carry: 6 A continuous carry at 70°C
4 A continuous carry at 85°C
1s Rating: 50 A
MOV Protected: 270 Vac/360 Vdc/40 J
Pickup Time: Less than 5 ms
Dropout Time: Less than 5 ms, typical
Breaking Capacity (10000 operations):
24 V 0.75 A L/R = 40 ms
48 V 0.50 A L/R = 40 ms
125 V 0.30 A L/R = 40 ms
250 V 0.20 A L/R = 40 ms
Cyclic Capacity (2.5 cycle/second):
24 V 0.75 A L/R = 40 ms
48 V 0.50 A L/R = 40 ms
125 V 0.30 A L/R = 40 ms
250 V 0.20 A L/R = 40 ms
Note: Make per IEEE C37.90-1989.
Note: Breaking and Cyclic Capacity per IEC 60255-0-20:1974.
Note: EA certified relays do not have MOV protected standard
output contacts.
High-Current Interruption Option for Extra I/O Board:
Make: 30 A
Carry: 6 A continuous carry at 70°C
4 A continuous carry at 85°C
1s Rating: 50 A
MOV Protection: 330 Vdc/130 J
Pickup Time: Less than 5 ms
Dropout Time: Less than 8 ms, typical