FANOX SIL-D00, User Manual, Page: 62 / 226

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5.
MONITORING AND CONTROL
5.1. Switchgear rated current and measurements
Measurements of the three-phase currents and the neutral current are given in RMS. A
sampling of 16 samples/cycle is performed.
The accuracy of the measurement is ±2% over a band of ±20% over the nominal current
and 4% over the rest of the range.
The following measurements are provided:
•
Phase r.m.s. currents (IA, IB, IC)
•
Neutral r.m.s. current (IN)
•
Residual or neutral voltage (VR)
•
Angle difference (D. ang. )
•
Maximum current (Imax)
Below are the phase and neutral measurement ranges of the SIL-D models.
They will have a rated current equal to 1 Ampere, 5 Amperes or sensitive model selectable
and they will have a frequency equal to 50 or 60 Hz selectable by general settings.
Current values are understood as secondary current:
Model Phase range Neutral range
Phase rated
current
Neutral rated
current
SIL-D0* 0.1-30 A or 0.5-150 A * 1A or 5 A *
SIL-DS* 0,05-15 A or 0.25-75 A * 0.5 A or 2.5 A *
SIL-D*0 * 0.1-30 A or 0.5-150 A * 1 A or 5 A
SIL-D*S * 0.01-3 A or 0.05-15 A * 0.5 A or 0.1 A
A transformer with a suitable current must be used to ensure correct operation. .
Frequency Rated 50 Hz or 60 Hz. ± 3 Hz
Thermal resistance Four times the continuous rated current