ANSI C12.1-2008 Test No. 20: Effect of Temporary Overloads. Self-contained meter devices are subjected to a symmetrical short-circuit current of 7,000 AMP peak, 60 Hz, for 1 to 6 cycles. The current circuits of the metering device are connected series adding.
A current surge test is a standard test applied to protective relay and measuring
devices. It simulates worst case fault conditions for devices installed in relaying
or metering current circuits.
The test is performed with the following test sequence that simulates an automatic
reclosing sequence with typical reclosing and clearing times:
Capabilities
- Two high-current 60 Hz test sets that obtain currents up to 6,000 Amperes continuous.
- One is capable of current surging by cycles and can deliver from 10,000 Amperes
for 5 seconds per minute up to 40,000 Amperes for 30 cycles every 15 minutes
Discrete step changes are not available.
ANSI C12.1-2008 Test No. 20: Effect of Temporary Overloads.
Self-contained meter devices are subjected to a symmetrical short-circuit current
of 7,000 AMP peak, 60 Hz, for 1 to 6 cycles. The current circuits of the metering
device are connected series adding.
