MEWOI-176kVA-22kV Variable Frequency Resonance AC Hipot Tester

ODM/ODM Testing Instruments Manufacturer

  • Main Features:: AC withstand voltage test of primary electrical equipment
  • Model No.:: MEWOI-176kVA-22kV
  • Name:: MEWOI-176kVA-22kV Variable Frequency Resonance AC Hipot Tester

Contact Us for QuotationEmail:mewoi@mewoi.comWhatsapp: +8618620373879


MEWOI-176kVA-22kV AC Resonant Test Set is mainly designed for AC withstand voltage test of primary electrical equipment in substation, such as transformer, GIS system, SF6 switch, cable, generator, bushing and other capacitive equipment.


Main technical parameters
Rated capacitance176kVA
Input power supply220V, frequency: 50Hz
 Rated voltage22kV
Rated current8A
Working frequency30 - 300Hz
Output waveformSine wave
Waveform distortionthe waveform distortion of output voltage ≤ 1%
Duty cycleallows continuous 1min under rated load, 1min under 1.1 times over-voltage
The temperature riseafter continuous operation for 1min under the rated load, the temperature rise is less than or equal to 65K
Protection functionwith over-current, over-voltage and flash-over protection for tested objects. (see the section of the variable frequency power supply)
Test accuracyRMS 1.5 class
Operating Condition

Temperature-10℃ ~ 50℃
Relative humidity≤ 90%RH
Altitude≤ 1000m
Configuration and parameters of the system


Inverter power supply 
(1) Rated output capacitance: 10kW
(2) Power supply: 0 - 220V ±10%V single-phase
(3) Output voltage: 0 - 250V, single-phase
(4) Rated input current: 45.4A
(5) Rated output current: 45A
(6) Voltage resolution: 0.01kV
(7) Voltage measurement accuracy: 1.5%
(8) Frequency adjustment range: 30 - 300Hz
(9) Frequency adjustment resolution: ≤ 0.01Hz
(10) Frequency stability: 0.1%
(11) Running time: continuous 60 min under rated capacitance
(12) After continuous operation for 60 min under the rated capacitance, the highest temperature of component is no more than 65K
(13) Noise level: ≤ 50dB
(14) Weight: about 20kg


High voltage reactor 

(1) Rated capacitance: 44kVA
(2) Rated voltage: 22kV
(3) Rated current: 2A
(4) Electric inductance: 55H / piece

(5) Quality factor: Q≥30 (f=45Hz)
(6) Structure: dry type
(7) Weight: about 45kg
MEWOI-10kVA/1.5kV  Exciting transformer 1pc

(1) Rated capacitance: 10kVA

(2) Input voltage: 0 ~ 250V, single-phase

(3) Output voltage: 1.5kV
(5) Structure: dry type
(7) Weight: about 158kg
MEWOI-30kV/3000pF Capacitive divider 1pc(1) Rated voltage: 30kV;
(2) High-voltage capacitance: 3000pF
(3) Dielectric loss: tgσ ≤ 0.5%
(4) Voltage ratio: 1000: 1
(5) Measurement accuracy: RMS 1.5%
(6) Weight: about 6kg

Other Options
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