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Kilowatt-hour meter / single phase (mechanical)
♦single phase (mechanical)♦
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1. Purpose
It is used to measure single phase AC active electric energy consume.
2. Technical data
2.1 Standard: GB/T15283-1994; IEC 521-1988
2.2 Rated voltage: 220~240V
2.3 Basic current Ib (Imax): 1.5(6) A; 3(6) A; 2.5(10) A; 5(20) A; 10(40) A; 15(60) A; 20(80) A; 30(100) A
2.4 Reference frequency: 50 Hz
2.5 Precision: 2.0
2.6 Start current: 0.5% Ib
2.7 Power consumption on voltage circuit: 2W, 8 VA
2.8 Power consumption on current circuit: 2.5 VA
2.9 Weight: 1.3~2.0 kg
3. Working principle of mechanical Kilowatt Hour Meter
When Kilowatt Hour Meter is connected into circuit, electromagnetic flux produced by voltage coil and current coil goes through the disc, and this electromagnetic flux distribute unevenly in time and space, which induces eddy current on disc. The interaction between electromagnetic flux and eddy current produces rotating torque to make the disc rotate, and braking action of magnet steel make rotation speed of disc uniform. The electromagnetic flux is proportional to voltage and current in circuit, and rotation speed of disc is proportional to load current. The rotation of disc is transferred to counter through worm gear, so indicated number is the power consumed actually in circuit.
4. Basic error limit of 2.0 grade meter
| Current |
Power factor |
Limit Error Range in percent of class 2.0 meter |
| 0.05 Ib |
1 |
+/-2.5 |
| 0.1 Ib~ Imax |
1 |
+/-2.0 |
| 0.1 Ib |
0.5 (delay) |
+/-2.5 |
5. Connection
 |
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| Direct connect |
CT connect |
6. Packing
Size(cm)
|
Quantity(pcs) |
Net Wt (kg) |
Gross Wt (kg) |
| 42X31X40.5 |
12 |
17 |
18.5 |
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