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KVCG202/EN M/H11
8.15
Current transformer requirements
Relay and CT
secondary rated
1/5A
8.16
High voltage withstand
8.16.1
Dielectric withstand IEC 255-5:1977
2.0kV rms for 1 minute between all terminals connected together and case earth except
terminal 1.
2.0kV rms for 1 minute between terminals of independent circuits, including contact
circuits.
1.0kV rms for 1 minute across open contacts of the watchdog relay.
ANSI/IEEE, C37.90: 1989 .
1.5kV rms for 1 minute across open contacts of output relays 0 to 7.
8.16.2
High voltage impulse IEC 60255-5:1977
5kV peak, 1.2/50µs, 0.5J between all terminals and all terminals of the same circuit
(except output contacts).
5kV peak, 1.2/50µs, 0.5J between all independent circuits and all terminals connected
together (except terminal 1) and case earth.
5kV peak, 1.2/50µs, 0.5J across terminals of the same circuit except output contacts.
8.16.3
Insulation resistance IEC 60255-5:1977
>100MΩ when measured at 500Vdc
8.17
Electrical environment
8.17.1
DC supply interruptions IEC 60255-11:1979
The relay shall withstand a 10ms interrupt without de-energising.
8.17.2
AC ripple on dc supply IEC 60255-11:1979
The relay shall withstand 12 % ac ripple.
8.17.3
High frequency disturbance IEC 60255-22-1:1988
Class III
8.17.4
Fast transient IEC 60255-22-4:1992
Class IV
8.17.5
EMC compliance
89/336/EEC
EN50081-2: 1994
EN50082-2: 1995
8.17.6
Electrostatic discharge test IEC 60255-22-2 :1996
Class 3 (8kV) – discharge in air with cover in place
Class 2 (4kV) – point contact discharge with cover removed (IEC 60801-2)
8.17.7
Radiated immunity IEC 60255-22-3:1989 and IEC 60801-3:1984
Class III
Nominal output class
(VA)
2.5
–2.5kV peak between independent circuits and case.
–1.0kV peak across terminals of the same circuit.
–4kV, 2.5kHz applied to all inputs and outputs.
Compliance with the European Commission Directive on EMC
is claimed via the Technical Construction File route.
Generic Standards used to estsablish conformity.
– field strength 10V/m and exteded frequency range 20MHz - 1000MHz.
Acuracy class
Accuracy limit factor
(x rated current
5P
Technical Manual
KVGC202
5
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