Single phase kWh meter test bench has been designed to meet the power supply requirement for testing different types of single phase kWh meters and provides high degree of operational convenience to carry
out calibration checks, performance tests of the meters as per Indian Standard Specification. There is provided terminals for connecting external R.S.S or Wattmeter. It will provide selection and regulation of output voltage and current ranges with full variation of power factor from zero to unity lag, as well as on lead.
A separate meter suspension rack with appropriate wiring and fitting will be supplied.
| Type | Input | Output voltage | Test current | No. of 1 phase kWH meters to be tested |
| MNTB1P01 | 3 phase, 4 wire, 400/440V, 50Hz. AC. | Continuously variable 0-260V AC. | 0.25, 0.5, 2.5, 10, 20 & 40A | 72 |
| MNTB1P02 | 3 phase, 4 wire, 3x240V/415V, 50Hz AC. | Continuously variable 0?300V AC. | 0.25, 0.5, 1, 2.5, 5, 10, 20, 40 , 50 & 100A | 40 |
| MNTB1P03 | 3 phase, 4 wire, 3x240V/415V, 50Hz AC. | Continuously variable 0?300V AC. | 0.5, 1, 2.5, 5, 10, 20, 30 & 40A | 40 |
| MNTB1P04 | 3 phase, 4 wire, 400/440V, 50Hz AC. | Continuously variable 230/240VAC. | 0.5, 1, 2.5, 5, 10, 20, 40 & 80A | 100 |
| MNTB1P05 | 3 phase, 4 wire, 400V, 50Hz. AC. Subject to variation: -5% to +10% of voltage & + 2.5% of frequency | Continuously variable 0 to 230/240V AC. | 0.5,1,2.5, 5, 10, 20, 25, 40 & 50A | 120 |
| MNTB1P06 | 3 phase, 4 wire, 415V, 50Hz AC. | Continuously variable 0-240VAC. | 1, 5, 10, 20, 30 & 50A | 15 |
| MNTB1P07 | 3 phase, 4 wire, 400/440V, 50Hz AC. | Continuously variable 0-300V AC. | 0.25, 0.5, 1, 2.5, 5, 10 & 20A | 50 |
| MNTB1P08 | 3 phase, 4 wire, 400/440V, 50Hz AC. Subject to variation: -5% to +10% of voltage & -2% to +1% of frequency | Continuously variable 0-300V AC. | 0.25, 0.5, 1, 2.5, 5, 10 , 20 & 40A | 50 |
Phase Shifter
Phase Shifting can be done at any value to keep power factor to Unity – 0 lag – Unity – 0 lead.
The test set is also provided with the following facilities.
- Creep test voltage source
- Inching switch
- Starting current of any rated test current.
Metering:
Voltmeters, Ammeters, Wattmeters’ (if any), Flush mounted type.
Power Factor Meter is provided with some of the mentioned test benches.
Protection:
Adequate protection circuit will be provided against overload.
Apart from the existing Types, sets as per requirement of customer may also be manufactured.
