sepam 20 user manual - Schneider Electric

6
PE80318
DE80293
Installation ACE990 Core balance CT interface
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Function
The ACE990 is used to adapt measurements between an MV core balance CT with
a ratio of 1/n (50 y n y 1500), and the Sepam residual current input.
Characteristics
Weight 0.64 kg (1.41 lb)
Assembly Mounted on symmetrical DIN rail
Amplitude accuracy ±1%
Phase accuracy < 2°
Maximum permissible current 20 kA - 1 s
(on the primary winding of an MV core
balance CT with a ratio of 1/50 that does not
saturate)
ACE990 core balance CT interface. Operating temperature -5°C to +55°C (+23°F to +131°F)
Storage temperature -25°C to +70°C (-13°F to +158°F)
mm
in
1.97
0.78
0.98
3.03 2.83
0.43
1.81
3.9
0.43
Description and dimensions
E
S
ACE990 input terminal block, for connection of the core balance CT.
ACE990 output terminal block, for connection of the Sepam residual current.
PCRED301005EN - 06/2008