3-phase monitoring relays series FP 3-phase monitoring relays series FP
| The C-mac 3-phase monitoring relays series
FP are made particularly to meet the requirements for safe and cost-effective monitoring
of the quality of the 3-phase supply voltages and to protect electrical devices connected
to the mains supply. The units are enclosed in a DIN-rail housing, 35 mm wide and front height 45 mm, which makes them very suitable in industrial installations as well as domestic switchboard panels. All units are connected to the 3-phase supply voltage with or without neutral and have a 1-pole relay output. The units are made in accordance with the EMC regulations for use in industrial environment.
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Specifications type FP30. FP30 is a combined under- and over-voltage relay with fixed reaction delay and adjustable setpoint. The output relay activates, when all 3 voltages are within the set limits and releases, if one or more of the voltages are outside the limits. The standard type has a delay-ON and delay-OFF time at 1 sec., and an adjustabe setpoint from +/- 5 to +/- 25 % of the nominal voltage. Optionally, the unit can be delivered for under-voltage or over-voltage detection only, with ON-delay or OFF-delay only, with different delay time, or with different set-point range. |
| The FP units consist of the following
variants: FP30: Combined under- and over voltage relay with
fixed reaction delay and adjustable setpoint. |
Specifications type FP31. FP31 is a phase-sequence/phase-asymmetry relay with fixed reaction delay and adjustable setpoint. The output relay activates, if the phase sequence is OK and the phase asymmetry between the 3 phases is lower than the set limit and releases, if the asymmetry exceeds the setpoint. Compared with FP30 the relay does not release, if all 3 voltages are higher or lower than the nominal voltages, as long as the asymmetry between them is lower than the setpoint. The standard type has a delay-ON and delay-OFF time at 1 sec., and an adjustabe setpoint from 5 to 25 %. Optionally, the unit can be delivered with ON-delay or OFF-delay only, with different delay times, or with different set-point range. |
| The functional principle is the same for all units:When the supply voltage is connected, and the monitored parameters are within the selected limits, the output relay is activated, and if one or more of the parameters are outside the limits, the relay will release. The relay function can be with or without time delay, dependent on the type of module. |
Specifications type FP34. FP34 combines the functions from FP30 and FP31, i.e. it is a combined phase sequence and under- and over-voltage relay with fixed reaction delay and adjustable setpoint. The output relay activates, if the phase sequence is correct, and all 3 voltages are within the set limits and it releases, if one or more of the voltages are outside the limits. The standard type has a delay-ON and delay-OFF time at 1 sec., and an adjustabe setpoint from +/- 5 to +/- 25 % of the nominal voltage. Optionally, the unit can be delivered for under-voltage or over-voltage detection only, with ON-delay or OFF-delay only, with different delay time, or with different set-point range. |
Mechanical dimensions:
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Specifications type FP35. FP35 is a combined under- and over-voltage relay with fixed setpoint and adjustable reaction delay. The output relay activates, when all 3 voltages are within the set limits and releases, if one or more of the voltages are outside the limits. The standard type has a setpoint of +/-10% of the nominal supply voltage and an adjustable delay-ON and delay-OFF time between 0 and 10 sec. Optionally, the unit can be delivered for under-voltage or over-voltage detection only, with ON-delay or OFF-delay only, with different setpoint, or with different delay range. |
