Deif SGC 420 - Genset Voltage and Frequency Measurements; Genset Current Measurements; Earth Leakage;Fan Current Monitoring

3.3 Genset voltage and frequency measurements
Category Specifications
Controller terminals
54 (Neutral)
55 (L3)
56 (L2)
57 (L1)
Measurement type True RMS
Phase-to-neutral voltage 32 to 300 V AC RMS
Phase-to-phase voltage 32 to 520 V AC RMS
Voltage accuracy
±1 % of full scale for phase-to-neutral
±1.5 % of full scale for phase-to-phase
Voltage resolution
1 V AC RMS for phase-to-neutral
2 V AC RMS for phase-to-phase
Frequency range 5 to 75 Hz
Frequency accuracy 0.25 % of full scale
Frequency resolution 0.1 Hz
NOTE For single phase applications, it is mandatory to connect the genset phase and neutral cables to the genset controller's
phase L1 and neutral terminals.
3.4 Genset current measurements
Category
Specifications
Controller terminals
43 and 42 (for phase L1)
45 and 44 (for phase L2)
47 and 46 (for phase L3)
Measurement type True RMS
Maximum CT secondary current rating 5 A
Burden 0.25 VA
Measurement accuracy ±1.4 % of nominal
3.5 Earth Leakage/Fan Current Monitoring
Category
Specifications
Controller terminals 48 and 49
Measurement type True RMS
Maximum CT secondary current rating 5 A
Burden 0.25 VA
Measurement accuracy ±1.4 % of nominal
NOTE Follow the recommended phase sequence while connecting the current transformer (CT).
USER MANUAL 4189341227A UK Page 9 of 86