JDZ9-27.5 type voltage transformerDetailed product description：

The JDZ9-27.5 voltage transformer is a single-phase double winding and three winding epoxy resin cast fully enclosed indoor device voltage transformer, suitable for precise voltage and energy measurement and relay protection in AC systems with a rated frequency of 50Hz and a maximum working voltage of 40.5kV (nominal voltage 27.5kV).
·Environmental temperature: The normal type is+40 ℃~-15 ℃; The plateau type ranges from+25 ℃ to -15 ℃.
·Environmental humidity: The daily average relative humidity should not exceed 95%, and the monthly average should not exceed 90%; The daily average saturated vapor pressure shall not exceed 2.2 × 10-3MPa, and the monthly average shall not exceed 1.8 × 10-3MPa.
·Product type: Indoor.
·Atmospheric conditions: There is no pollution or explosive medium in the installation site that seriously affects the insulation of the transformer.
·The installation site has no severe vibrations or bumps-
·Open circuit is not allowed during product operation, otherwise there is a high voltage hazard.
·The temperature during transportation and storage ranges from+40 ℃ to -15 ℃.
·When using the product, the equipotential lead wire should be reliably connected to the high-voltage bus.
※ Technical Parameters ※
·Product execution standard: GB1207-1997 "Voltage Transformers".
·Rated insulation level: 40.5/95/200kV.
·Insulation and heat resistance grade: Grade E.
·The impulse test voltage of JDZ9-27.5 voltage transformer complies with the provisions of GB311-64, that is, the full wave is 200kV, the cut-off wave is 230kV, and the induced test voltage value is 80kV, 15s (400Hz). The secondary winding is connected to ground at 3kV for 1 minute.

model	Rated voltage ratio (V)	Accurate level or level combination	Rated output (VA)	Maximum output (VA)
JDZ9-27.5	27500/100	Level 0.2	sixty	one thousand
		Level 0.5	one hundred and eighty
		Level 1	three hundred and sixty
	27500/100/100	Level 0.2/0.5	30/50	six hundred

JDZ9-27.5 Voltage Transformer