SATEC EM920 Installation Manual - Manual (Page 31)

Appendix: Technical Specifications 25
Power Supply
Power supply Supplied from Monitored Voltage inputs
Three Phase PS, Rated Inputs
50/60 Hz
57.73 – 120V AC ± 20%
Insulation Dielectric withstand 2500V AC @ 1mn
Operating Temperature range -40ºC to + 75ºC
Output voltage +12V DC ± 5%
Low Voltage
Burden per phase (w/o AUX. PS)
Burden per phase (w. AUX. PS) 6VA
<0.1VA
Auxiliary AC/DC Power supply 1
Operating Temperature range -40ºC to + 75ºC
Rated Input, 0-400 Hz 50-288V AC, 90-290V DC
Isolation 2500V AC @ 1mn
Output voltage +12V DC ± 5%
Burden 6VA
AC/DC
Optional module
Terminals for wires size 3 x 2.5 mm 2 pig-tail cable
Battery for RTC
and SRAM
Minimum operation reserve 48 h. –
if no use of battery
(According to AS 1284.7/IEC 1038)
Total reserve capacity shall be not
less than 2000h – with use of
battery. (According to AS
1284.7/IEC 1038)
Up to 3 years
More than 10 years service battery
life (According to AS 1284.7/IEC
1038)
Input/Output ports
Fast Status input Digital Input optically
isolated
Dry contacts, internally wetted 24V DC
Resistance of open contact sensing > 1Mohm
Resistance of closed contact sensing < 100 Ohm
Sampling rate
1 ms
Insulation Dielectric withstand 2500V AC @ 1mn
2DI basic
8DI
Optional module
2
Terminals for wires size 10 x 2.5 mm 2 cable
RELAY OUTPUT
Digital output – SSR optically
isolated
1
1 relay (Form C) 0.5A @ 250V AC/DC
Operation time
Release time 1 ms
1 ms
Insulation Dielectric withstand 2500V AC @ 1mn
Relay Output - KYZ
basic
Terminals for wires size Blades (Socket meter
standard – C12.10)
Relay Output Digital output – combined SSR +
EMR
4 x FORM C + 2 x FORM A
2 Factory/Meter shop installable