JLS-40.5W High voltage power metering boxDetailed product description：

The JLS-40.5 three-phase oil immersed outdoor high-voltage power metering box is composed of two voltage transformers and two current transformers combined and installed in one oil tank. Suitable for measuring active and reactive energy on a three-phase AC network with a rated voltage of 40.5KV and a rated frequency of 50Hz.

Main technical parameters of JLS-40.5W high-voltage power metering box

1. Rated primary voltage: 35000 (V)
2. Rated secondary voltage: 100 (V)
3. Rated primary current:
a、 Single variable ratio specifications include: 5, 10, 15, 20, 25, 30, 40

50, 60, 75, 100, 150, 200
b， Dual ratio specifications include: 5-10, 10-15, 15-25, 15-30, 20-40, 25-50, 50-70, 50-100, 75-150, 100-200
4. Rated secondary current: 5 (A)
5. Rated output and accuracy level: The current transformer is at 10VA 0.2S level or 0.2S level, and the voltage transformer is at 25VA 0.2 level
6. Power frequency withstand voltage: The primary to secondary and ground short-time power frequency withstand voltage is 95KV, and the secondary to ground short-time power frequency withstand voltage is 3KV
7. Rated short-time thermal current: 90 times the rated primary current
8. Rated dynamic stability current: 2.5 times the rated short-time thermal current

Error and temperature rise of voltage and current transformers inside the measuring box
The JLS-40.5W high-voltage power metering box meets the requirements of GB1207-97 and GB1208-97

Voltage Transformer Error Limit

accuracy level	Voltage error ±% (At the following rated voltage percentages)			Phase difference ±% (At the following rated voltage percentages)
	eighty	one hundred	one hundred and twenty	eighty	one hundred	one hundred and twenty
zero point five	zero point five	zero point five	zero point five	twenty	twenty	twenty
zero point two	zero point five	zero point two	zero point two	ten	ten	ten

Error limit of current transformer

accuracy level	Voltage error ±% (At the following rated voltage percentages)				Phase difference ±% (At the following rated voltage percentages)
	five	twenty	one hundred	one hundred and twenty	five	twenty	one hundred	one hundred and twenty
zero point five	one point five	zero point seven five	zero point five	zero point five	ninety	forty-five	thirty	thirty
zero point two	zero point seven five	zero point three five	zero point two	zero point two	thirty	fifteen	ten	ten

JLS-40.5W high-voltage power metering box temperature rise limit (referring to the temperature rise at maximum capacity)

Mutual inductance location	Temperature rise 0C	measurement method
coil	fifty-five	Resistance method
Coil head or connection sign	fifty	Thermometer method
oil noodles	fifty	Thermometer method

JLS-40.5W high-voltage power metering box