2
SPCJ 3C3
Overcurrent
relay module
Contents
Features .......................................................................................................................... 2
Description of operation ................................................................................................. 3
Block diagram ................................................................................................................. 4
Front panel ..................................................................................................................... 5
Operation indicators ....................................................................................................... 5
Settings ........................................................................................................................... 6
Selector switches ............................................................................................................. 7
Measured data ................................................................................................................ 9
Recorded information ................................................................................................... 10
Main menus and submenus of settings and registers ..................................................... 12
Time/current characteristics ......................................................................................... 13
Technical data .............................................................................................................. 18
Event codes ................................................................................................................... 19
Remote transfer data ..................................................................................................... 20
Fault codes.................................................................................................................... 23
Features
Low-set overcurrent stage I> with selectable
definite time or inverse definite minimum time
(IDMT) operation characteristic
High-set current stage I>> with instantaneous
operation or definite time operation character-
istic
Both overcurrent stages can be blocked by means
of an external control signals from cooperating
protection relays
Digital display of measured and set values, re-
corded fault values, operation indications and
fault messages
Comprehensive serial communication capability
Continuous self-supervision of the electronics
and the software including autodiagnostics
1MRS 750602-MUM EN
Issued 96-12-30
Modified 97-12-31
Version B (replaces 34 SPCJ 2 EN1)
Checked KJ
Approved GL
Data subject to change without notice