Schweitzer Engineering Laboratories SEL-251 User Manual

SEL-251
SEL-251-2
SEL-251-3
DISTRIBUTION RELAY
PHASE OVERCURRENT RELAY
WITH VOLTAGE CONTROL
NEGATIVE-SEQUENCE OVERCURRENT RELAY
GROUND OVERCURRENT RELAY
MULTIPLE SHOT RECLOSING RELAY
SELECTABLE SETTING GROUPS
CIRCUIT BREAKER MONITOR
FAULT LOCATOR
SELOGIC™ CONTROL EQUATIONS
INSTRUCTION MANUAL
SCHWEITZER ENGINEERING LABORATORIES, INC.
2350 NE HOPKINS COURT
PULLMAN, WA USA 99163-5603
TEL: (509) 332-1890 FAX: (509) 332-7990

Schweitzer Engineering Laboratories SEL-251 Specifications

General

Category	Relays
Communication Protocols	DNP3, Modbus, IEC 61850
Operating Temperature	-40°C to +85°C
Frequency	50/60 Hz
Type	Protection Relay
Current Input	5 A
Communication Ports	Ethernet
Mounting	Panel
Protection Functions	Overcurrent, Ground Fault
Digital Inputs	8 digital inputs