Open Circuit Protector 3 Phase
OPEN CIRCUIT PROTECTOR (MODEL 3-OCP)
(3 Phase)
The OCP series of Open Circuit Protectors are voltage sensing devices using high speed shorting SCR switches. When the secondary peak voltage exceeds the clamping voltage value, the SCR operates, shorting the C.T. secondary and reducing the voltage to about 2 volts in less than 1/4 cycle. This process repeats each current polarity reversal. The protection is activated each half cycle.
Description
Model 3-OCP (3 Phase)
Application: Open circuit protection for the relay classes through C800 and all metering classes
Frequency: 50-400hZ
Ambient Temperature Range: -30 Deg C to + 55 Deg C
Normal Secondary Current: 5 Amps AC
Short Time Overcurrent: 100 Amps for 1 sec (80 Amps for 2 sec)
Max Continuous Current: 10 Amps through one element or 7.5 Amps through all three independent elements
Terminals: Copper with brass slotted pan head screws, #8-32 X 1⁄4, with cupped washers
Weight: 1.2 lbs
Never open-circuit the CT secondary while the CT primary circuit is energized.
The OCP series of Open Circuit Protectors are voltage sensing devices using high-speed shorting SCR switches.
The three element Open Circuit Protector is provided with six terminals for connection across the secondary of the C.T. and in parallel with the burden.
Provides protection against high secondary voltage transients, which may damage the burden or secondary winding.
Metering class C.T.’s with a rating factor of 2 could operate up to 10 amps on a continuous basis. The OCP tolerates this condition and 80 A RMS for 2 seconds.
- cRUus E300189
- ROHS
