An overview,
Wireless secondary voltage drop/load tester is an intelligent wireless testing instrument designed and developed by our company to automatically test the secondary voltage drop/load of voltage transformers. It completely replaced the conventional secondary voltage drop/load tester, no longer lay a very long voltage test cable, to a large extent to avoid the occurrence of PT secondary short circuit accidents.
Two, technical indicators
1. Use environment
Ambient temperature: -10 ° C to 40 ° C
(2) Relative humidity: ≤80%
2. Measurement accuracy
The measuring accuracy of this instrument is grade 1.
δ F =± (1%× F ±0.01) (%)
Angle difference: δ δ=±(1%×δ±1) (分)
Conductance: G = + / - 1% (+ / - 0.01 x G) mS
Susceptance: delta = - (1% * delta plus or minus 0.01) mS
Load: S = - (1% * S + / - 0.1) VA
Resistance: R = + Ω (R + / - 0.1 (1%)
Reactance: X = + Ω (1% + / - 0.1 X X)
3, charging power supply: AC 176V~264V, frequency 45-55Hz
4. Measuring range and resolution of the instrument
| Test project | The scope of | Minimum resolution |
| Contrast value(%) | 0.001～10.000 | 0.001 |
| Angle difference(ˊ) | 0.01～±600.00 | 0.01 |
| The error value(%) | 0.001～10.000 | 0.001 |
| Taking about(%) | 0.001～10.000 | 0.001 |
5. Basic error
Ratio difference: ± (1% ratio reading ±0.01) %
Angle difference: ± (1% Angle reading ±1) minutes
Conductance: ± (1% conductance reading + no 1 word) mS
Susceptance: ± (1% susceptance reading + no 1 word) mS
6, insulation: ⑴, voltage, current input end of the insulation resistance of the housing ≥100M ω.
(2) The input end of the working power supply is subjected to power frequency 2KV (effective value) between the shell, and the experiment lasts for 1 minute.
7, battery working time: full working time is more than 6 hours.
8. Volume:
Host: 32 cm * 24 cm * 13 cm
Extension: 32 cm * 24 cm * 13 cm
9. Weight:
Host: 2.5 Kg
Extension: 2 kg
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