SATEC EM920 Installation Manual - Manual (Page 30)

Appendix: Technical Specifications
24
Appendix: Technical Specifications
Inputs Ratings
AC Voltage inputs Va, Vb, Vc and Vref - 50/60Hz
High input impedance =
10MΩ
Voltage rating:
57.73 up to 120 Volts (L-N), 100 to
207 Volts (L-L)
Voltage range
Crest factor >2 [V
L-N
x 1.2 x 2]
0 -144 V r.m.s,
peak up 288V (for PQ)
Maximum Line to Line voltage 500 V r.m.s
Temporary over voltage between live
conductors and earth
Transient over voltage between live
conductors and earth (optional, from
15 µs up to ms)
240 V r.m.s
1.5 kV peak
Starting voltage 1 0.1%U
n
Burden per phase < 0.2 VA
Overload withstand for 1 minute
phase-to-ground (ANSI C12.1 & IEC
62053-22, protective class II)
4000V r.m.s
Rated impulse voltage
(ANSI C12.1 & IEC 62052-11,
protective class II) 6000V peak
Reference voltage
U
n
57.73V up to
120V L-N (via PT)
Terminals for wires size Blades (Socket meter
standard – C12.10)
Ground input Terminals for wires size According to Socket meter
standard – C12.10
AC Current inputs 3 (4 optional) Galvanic isolated Inputs
Current class Imax 10A & 20A
Maximum measurable short circuit
current (Isc)
10 x I
n
Burden per phase (In = 5 A) < 0.2 VA
Starting current (I1, I2, I3) – average
Starting current (I1, I2, I3) – real
time
0.2% I
n
1.0% I
n
Over current withstand for 1 s non-
recurring
50 x I
n
Isolation 4000V r.m.s
Terminals for wires size Blades (Socket meter
standard – C12.10)
Reference Current
Basic model In =
5 A
(TA = 2.5A)
3 (4 optional) Galvanic isolated Inputs FORM 9 (39 optional)
1 Starting voltage, interruptions and dips measurement applicable only with installed APS