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Technical
Section 9
Dimensions
Section 10
RCP phase control, RCI current
control, RCU voltage control and
RCC compressor control relays
Energy
management
5
Function
RCP
The phase control relay monitors phase order and asymmetry as well as voltage
presence on all 3 phases of a three-phase circuit (motor supply, etc.). It reports
phase loss or reversal.
RCI
The current control relay monitors the current flowing in a circuit and reports when
the preset threshold is reached.
RCU
The voltage control relay monitors the potential difference of a circuit and reports
when the preset threshold is reached.
RCC
The compressor control relay monitors the compressor power supply and prevents
its immediate restart on detection of a voltage break or drop.
Common Technical data
Parameter setting:
On the front face
By direct scale
Using a screwdriver
Display accuracy:
±10 % full scale
Utilisation frequency:
50…60 Hz
Utilisation temperature:
-5…+55 °C
Consumption:
3 VA
Indication:
Green LED for power ON
Red LED for fault
Output by 8 A changeover switch under 250 V AC (cos
ϕ
= 1)
Connection:
Tunnel terminals for rigid cables from 1.5 to 6mm
2
Specific technical data
RCP
Operating voltage:
400 V AC, ±15 %
Phase asymmetry
5...25 %
threshold setting:
Hysteresis:
Fixed, 5% of asymmetry threshold
Phase rotation direction monitoring
3 phase presence monitoring
Time delay on tripping: 0.3 s
RCI
Measurement:
Range:
0.15...10 A
Automatic recognition of ac and dc current
2 measurement ranges selected by wiring:
- 0.15...1.5 A
- 1...10 A
Overcurrent and undercurrent monitoring (selection by selector switch)
Threshold
Adjustable from 10...100 %
Hysteresis
Adjustable from 5...50 %
Failsafe contact
Time delay on
0.1...10 s
threshold reached:
Power supply:
230 V AC
Optional fault memorisation with reset
Compatible with TI current transformers with an X/5 ratio
RCU
Measurement:
Range: 10...500 V
Automatic recognition of ac and dc voltage
2 measurement ranges selected by wiring:
- 10...50 V
- 50...500 V
Overvoltage and undervoltage monitoring (selection by selector switch)
Threshold
Adjustable from 10...100 %
Hysteresis
Adjustable from 5...50 %
Failsafe contact
Time delay on threshold reached: 0.1...10s
Supply voltage: 230 V AC
Optional fault memorisation with reset
RCC
Operating voltage:
230 V AC
Threshold setting:
±5…±15 % voltage drop
Time delay on
3 or 6 minutes (selection by wiring)
threshold reached: