Littelfuse SE-100T Series - Manual

© May 2012 Littelfuse Protection Relays & Controls www.littelfuse.com/relayscontrols
Accessories
Description
The SE-100T is a ground-fault-relay test unit designed to test
the current pickup level of ground-fault protection.
The tester injects current through the window of installed
ground-fault current transformers to verify the operation of
ground-fault monitors and relays.
It is used on substations, motor control centers (MCCs),
central distribution panels, switchboards, and test benches to
verify relay operation.
The SE-100T tests the entire ground-fault circuit including
current transformers, wiring, ground-fault relay and the
operation of the interrupting device. It is recommended to
test every relay and its current interrupting device annually.
SE-100T SERIES
Ground-Fault-Relay Tester
ORDERING NUMBER CONTROl pOwER
SE-100T 120 Vac
Ordering Information
Specifications
Input Voltage 120 Vac, 60 Hz, 30 VA
Dimensions H 150 mm (5.9”);
W 109 mm (4.3”);
D 100 mm (4.0”)
Output Current Levels L0 = 0.65 ± 0.1 A
HI = 2.75 ± 1.5A
Output Voltage 6.3 Vac maximum
Conformally Coated Standard feature
Warranty 5 Year
Mounting Surface
Simplified Circuit Diagram
FEaTURES BENEFITS
Output Current Levels
Low and high output levels to test a variety of
relays
Remote Test Input
Allows test to be initiated from another
location
Features & Benefits
NGR
L2
NGR
MONITOR
CT
L1
GROUND-FAULT
MONITOR
L2
L1
SE-100T SERIES
CT
L2
L1
(Ground-Fault
Relay Tester)
SENSING
RESISTOR
Relay Testers