Detailed Product Description
2.1 Specifications:
Type | DDSF 855 |
Accuracy grade | 1.0 grade2.0 grade |
Rated voltage (V) | 220 |
Rated current (A) | 1.5(6) A; 2.5(10) A; 5(20) A; 10(40) A; 15(60) A; 20(80) A |
Meter constant (imp/KWh) | As shown on panel |
2.2 Basic error:
Load current (A) | Power factor COSφ | Basic error % | |
1.0 grade | 2.0 grade | ||
0.05 Ib | 1.0 | ±1.5 | ±2.5 |
0.1 IbImax | 1.0 | ±1.0 | ±2.0 |
0.1 Ib | 0.5(lagged) | ±1.5 | ±2.5 |
0.8(leading) | ±1.5 | ||
0.2 IbImax | 0.5(lagged) | ±1.0 | ±2.0 |
0.8(leading) | ±1.0 | ||
2.3 Start: under rated voltage and rated frequency, power factor equal to 1, load current equal to 0.4% Ib (1.0 grade), 0.5% Ib (2.0 grade), Kilowatt Hour Meter works normally.
2.4 No-load running: when voltage is imposed on without any current in current circuit, testing output of meter shall not be more than one pulse in a standard period.
