Over Current Relay

Protection Relays

Definite Time Over Current Relay (Panel Mounting 96x96mm)
Brand: Broyce Control
Type: P-9625
Definite Time (DT) Over current relay
  • True R.M.S. measurements
  • Individual Trip Level adjustment for each phase
  • Adjustable Delay setting
  • Test and Reset button for simulating and clearing of fault condition
  • Red LED indication of which phase has been triggered
  • Red LED indication of actual tripped condition
  • Green LED indication for Auxiliary power supply presence
  • Microprocessor based (self checking) with non-volatile memory
  • Terminals suitable for 2 x 2.5mm2
  • wires (complete with protective cover)
The P9625 (from the P9600 series family of IDMT/ DT relays) is a microprocessor based relay designed to monitor and detect Over currents in 3-phase applications. Typically the P9625 is wired in conjunction with external current transformers (1 per phase) of the feeder to be protected.

The adjustments and indicators are laid out such to help the user during set-up and fault finding. The adjustment for the L1 (R) for example has its corresponding red LED positioned above it so it is clear as to which phase this LED relates to. Adjustment and LED operation is explained further on the next page.
The adjustment for the Delay is a global adjustment that is connected with any one phase that exceeds the set threshold and delays the relay from energising.
A Test mode is provided (also accessible with the tamperproof transparent cover closed) to
confirm the correct operation of the internal relay. The relay will energise when the “TEST”
button is pressed and de-energise when the “RESET” button is pressed.
Supply voltage Un (1, 2):
115VAC ±15%
230VAC ±15%
(Voltage should be specified at time of ordering)
Rated frequency: 50/60Hz
Isolation: Over voltage cat. III
Rated impulse withstand voltage: 4kV (1.2 / 50μS) IEC 60664
Power consumption: 3W max.
Rated current input In: 5A (directly connected)
Rated frequency: 50Hz
Burden: <0.4VA @ In
Overload: 4 x In (continuous)
External CT’s
(9, 10, 11, 12, 13, 14): Class P recommended. (with 5A secondary)
Over current settings:
Trip threshold: 2.0 – 6.0A (40 – 120%)
Time Delay: 0.05 – 1.0s
Pick up value: +2% of trip setting
Protection thresholds: ±5%
Response time: ±5% (with a minimum of 50mS)
Repeat accuracy: ±0.5% @ constant conditions
Ambient temperature: -10 to +60° C
Relative humidity: +95% (non-condensing)
(RL1 -3, 4, 5): 1 x SPDT relay
Output rating:
AC1 250V 8A (2000VA)
AC15 250V 5A (1250VA)
DC1 25V 8A (200W)
Electrical life: ≥150,000 ops at rated load
Dielectric voltage: 2kV AC (rms) IEC 60947-1
Rated impulse withstand voltage: 4kV (1.2 / 50μS) IEC 60664

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Author: mavinelectric

Electrical Power and Control Services

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