HVHIPOT Capacitance and Dissipation Factor Tester for Transformer

Product Description

CPF-10 Capacitance and Dissipation Factor Tester for Transformer


General Information  

CPF-10 measures the capacitance and dielectric loss factor (tgδ) of high voltage electric equipment. It is integrated structure, built-in dielectric loss test bridge, variable frequency adjustable power supply, boosting transformer and SF6 standard capacitor.

It can test grounded equipment, ungrounded equipment, completely-sealed CVT (Capacitive Voltage Transformer), if adding a insulation cup and temperature control device, dielectric loss of insulating oil can be tested.

High voltage source is generated by internal inverter of the instrument, which is used for testing test object after transformer boost. The frequency can be changed to 45.0Hz, 50Hz, 47.5Hz/52.5Hz, 45Hz/55Hz, 60.0Hz, 65.0Hz, 57.5Hz/62.5Hz, 55Hz/65Hz. The digital notch technique is adopted to avoid the interference of the power frequency electric field to the test and fundamentally solve the problem of accurate measurement under the interference of strong electric field. At the same time, it is applicable to the detection occasions with generator after power failure.

 

Features
 

1. 7-inch touch LCD screen display.

1. Calendar chip and large storage inside. Save testing result according to time order, check history record and print the result.
2. The instrument data can be exported through U disk.
3. Multiple testing mode, with modes of internal high voltage, external high voltage, internal standard, external standard, GST/UST, self-excitation. High voltage(more than 10kV) dielectric loss test can be made in the situation of external standard outside high voltage.
4. Test full sealed CVT (Capacitive Voltage Transformer) C₁ and C₂ dielectric loss and capacitance at the same time. Also test CVT transformation ratio and voltage angle difference.
5. No need to dismantle cable to measure dielectric loss and capacitance of CVT.
6. The dielectric loss and capacitance value of C0 in the upper end of CVT can be measured by using the reverse shielding method.
7. High speed sampling signal. Inverter and sampling circuit inside are digitized controlled. Output voltage is adjusted continuously.
8. LCR automatic measurement. Inductance, capacitance, resistance can be measured and displayed.
9. Multiple protection of input voltage fluctuation, output short circuit, over-voltage, over-current, temperature, secure and reliable. Meanwhile, it has the function of grounding testing, that voltage boost is not permitted for non-grounding equipment.
10. Frequency can be changed into 45.0Hz, 50Hz, 47.5Hz/52.5Hz, 45Hz/55Hz, 60.0Hz, 65.0Hz, 57.5Hz/62.5Hz, 55Hz/65Hz.

 

Specifications
 

Working condition	-10ºC~40ºC			RH<80%
Anti-interference principle	Frequency conversion
Power supply	AC 220V, 50Hz			Generator can be used (Grounding of neutral wire).
High voltage output	0.5kV~10kV			Every 0.1kV
	Accuracy			±(reading*2%+0.1kV)
	Max. current			200mA
	Capacity			2000VA
Self-excitation power	AC 0V~50V/15A			Single frequency: 45.0Hz, 50.0Hz 55.0Hz, 60.0Hz, 65.0Hz Automatic dual frequency conversion 45.0Hz/55.0Hz, 47.5Hz/52.5Hz 55.0Hz/65.0Hz, 57.5Hz/62.5Hz
Resolution	tgδ: 0.001%			Cx: 0.001pF
Accuracy	tgδ: ±(reading*1.0%+0.040%)
	C x: ±(reading*1.0%+1.00PF)
Measurement range	tgδ	Without limit
	Cx	15pF < Cx < 300nF
		10kV		Cx < 60nF
		5kV		Cx < 150nF
		1kV		Cx < 300nF
	CVT test			Cx < 300nF
LCR measurement range	L>20H(2kV)			R>10KΩ(2kV)
LCR measurement accuracy	2%		Angle resolution			0.01
CVT ratio range	10~10000
CVT ratio accuracy	3%		CVT ratio resolution		0.01
Dimension	Main unit: 580(L)×380(W)×380(H)
	Accessory box: 430(L)×320(W)×140(H)
Memory capacity	100 groups, USB flash disk storage is supported.
Weight	Main unit: 23.5Kg
	Accessory box: 5.25Kg