High-Voltage AC Withstand Testing for Transformers, Switchgear &
Circuit Breakers
The HZD1601 Power Frequency AC Withstand Voltage Test Equipment is
designed for insulation withstand and dielectric testing of power
transformers, switchgear, circuit breakers, bushings, insulators
and other electrical equipment.
The system consists of a control unit and high-voltage test
transformer. It generates power-frequency AC high voltage for
withstand testing and can also be configured as an AC/DC test
system when DC testing is required.
A wide range of voltage and capacity combinations is available. 5
kVA / 50 kV is one of the commonly used configurations, not the
only specification. Test voltage, capacity, input power,
transformer type and accessories can be customized according to the
test object and applicable requirements.
[Get a Configuration Recommendation]
Technical Parameters
Control Unit
| Model | Capacity | Input Voltage | Input Current | Output Voltage | Output Current |
|---|
| 2/220 | 2 kVA | AC 220 V | 10 A | 0–250 V | 8 A |
| 3/220 | 3 kVA | AC 220 V | 15 A | 0–250 V | 12 A |
| 5/220 | 5 kVA | AC 220 V | 25 A | 0–250 V | 20 A |
| 10/220 | 10 kVA | AC 220 V | 50 A | 0–250 V | 40 A |
| 15/380 | 15 kVA | AC 380 V | 37.5 A | 0–430 V | 34.8 A |
| 20/380 | 20 kVA | AC 380 V | 50 A | 0–430 V | 46.5 A |
| 25/380 | 25 kVA | AC 380 V | 62.5 A | 0–430 V | 58.1 A |
| 30/380 | 30 kVA | AC 380 V | 75 A | 0–430 V | 69.7 A |
| 50/380 | 50 kVA | AC 380 V | 125 A | 0–430 V | 116.2 A |
| 100/380 | 100 kVA | AC 380 V | 250 A | 0–430 V | 232.5 A |
High-Voltage Test Transformer
| Model | Capacity | LV Voltage | LV Current | AC Output | DC Output* |
|---|
| 1.5/50 | 1.5 kVA | 200 V | 7.5 A | 50 kV / 30 mA | 70 kV / 21.4 mA |
| 3/50 | 3 kVA | 200 V | 15 A | 50 kV / 60 mA | 70 kV / 42.9 mA |
| 5/50 | 5 kVA | 200 V | 25 A | 50 kV / 100 mA | 70 kV / 71.4 mA |
| 10/50 | 10 kVA | 200 V | 50 A | 50 kV / 200 mA | 70 kV / 142.9 mA |
| 15/50 | 15 kVA | 400 V | 37.5 A | 50 kV / 300 mA | 70 kV / 214.3 mA |
| 20/50 | 20 kVA | 400 V | 50 A | 50 kV / 400 mA | 70 kV / 285.7 mA |
| 30/50 | 30 kVA | 400 V | 75 A | 50 kV / 600 mA | 70 kV / 428.6 mA |
| 50/50 | 50 kVA | 400 V | 125 A | 50 kV / 1000 mA | 70 kV / 714.3 mA |
| 10/100 | 10 kVA | 200 V | 50 A | 100 kV / 100 mA | 140 kV / 71.4 mA |
| 15/100 | 15 kVA | 400 V | 37.5 A | 100 kV / 150 mA | 140 kV / 107.1 mA |
| 20/100 | 20 kVA | 400 V | 50 A | 100 kV / 200 mA | 140 kV / 142.9 mA |
| 30/100 | 30 kVA | 400 V | 75 A | 100 kV / 300 mA | 140 kV / 214.3 mA |
| 50/100 | 50 kVA | 400 V | 125 A | 100 kV / 500 mA | 140 kV / 357.1 mA |
| 10/150 | 10 kVA | 200 V | 50 A | 150 kV / 66.7 mA | 210 kV / 47.6 mA |
| 15/150 | 15 kVA | 400 V | 37.5 A | 150 kV / 100 mA | 210 kV / 71.4 mA |
| 20/150 | 20 kVA | 400 V | 50 A | 150 kV / 133.3 mA | 210 kV / 95.2 mA |
| 30/150 | 30 kVA | 400 V | 75 A | 150 kV / 200 mA | 210 kV / 142.9 mA |
| 50/150 | 50 kVA | 400 V | 125 A | 150 kV / 333.3 mA | 210 kV / 238.1 mA |
*DC output is available with the AC/DC test transformer
configuration.
Other voltage and capacity combinations can be customized according
to the test object and technical requirements.
[Need a Different Voltage or Capacity? Contact Our Engineers]
Key Features
- Power-frequency AC withstand testing
- AC or AC/DC test transformer configuration
- Multiple kVA and kV combinations
- Oil-immersed, dry-type and gas-filled options
- Overcurrent protection
- Zero-position start protection
- Voltage and current monitoring
- Test timer: 1 s–99 h
- Audible and visual alarm
- Customized voltage, capacity and accessories
System Configuration
Control Unit
Provides voltage regulation, voltage/current monitoring, timing and
protection functions.
High-Voltage Test Transformer
Available configurations:
- AC test transformer
- AC/DC test transformer
- Oil-immersed type
- Dry type
- Gas-filled type
Optional Accessories
- Standard high-voltage divider
- DC microammeter
- Protective spark gap
- Discharge rod
- Protective water resistor
- High-voltage filter capacitor
AC or AC/DC Configuration?
AC Test Transformer
For projects requiring power-frequency AC withstand testing, such
as transformer, switchgear and circuit breaker testing.
AC/DC Test Transformer
For projects requiring both AC withstand testing and DC
high-voltage testing. DC testing can be equipped with a DC
microammeter for leakage-current measurement.
If you mainly perform AC power-frequency withstand testing, an AC
configuration may be sufficient. If both test modes are required,
select the AC/DC configuration.
How to Choose
The required configuration mainly depends on:
- Test Object: Transformer / Switchgear / Circuit Breaker / Bushing /
Insulator
- Test Voltage: ___ kV
- Capacity: ___ kVA
- Test Mode: AC / DC / AC+DC
- Transformer Type: Oil / Dry / Gas
- Power Supply: AC 220 V / AC 380 V
Not sure about the required capacity? Send us your test object and
required test voltage — our engineers can recommend the appropriate
configuration.
[Get a Configuration Recommendation]
OEM / ODM Customization
Beyond standard configurations, the HZD1601 can be built to your
specific brand and project requirements — including custom voltage
and capacity combinations, control panel branding and logo, housing
color, and packaging under your own brand.
If you're a distributor or partner looking to supply this equipment
under your own brand, visit our OEM / ODM page for full customization options, or contact us directly with your requirements.
Why Choose HZD1601?
16+ Years of Manufacturing
Professional manufacturer of electrical testing equipment since
2010, with long-term cooperation with State Grid Corporation of
China and China Southern Power Grid.
Wide Specification Range
Multiple standard kVA and kV configurations are available.
Custom Configuration
Voltage, capacity, transformer type, control unit and accessories
can be customized.
Complete Test System
Control unit, high-voltage test transformer and optional
accessories can be supplied as a complete solution.
Technical Support
Engineers assist with equipment selection and configuration
according to the test object.
FAQ
Is 5 kVA / 50 kV the only specification?
No. 5 kVA / 50 kV is a commonly used configuration. The system is
available in many other kVA and kV combinations.
Can HZD1601 be used for transformer withstand testing?
Yes. It is designed for high-voltage withstand testing of power
transformers and other electrical equipment.
Can it test circuit breakers and switchgear?
Yes. It can be configured for withstand testing of circuit
breakers, switchgear and related insulation systems.
Does it only perform AC testing?
No. The standard AC configuration is for power-frequency AC
withstand testing. An AC/DC transformer configuration is available
when DC testing is also required.
Can you customize the equipment?
Yes. Test voltage, capacity, transformer type, control unit and
accessories can be customized.
Do you provide private-label or branded versions of this equipment?
Yes. The HZD1601 is available with OEM/ODM customization, including
branding, panel design and packaging under your own brand. See our OEM/ODM page for details.
What information is needed for a quotation?
Test object, required test voltage, capacity if known, AC/DC
requirement, power supply and test location.
Get Your Withstand Test System
Need a power-frequency AC withstand test system for a transformer,
switchgear or circuit breaker?
Send us:
- Test Object:
- Required Test Voltage:
- Capacity:
- AC / DC / AC+DC:
- Test Location:
Our engineers will recommend the suitable test transformer, control
unit and accessories.
{Request a Quote}
Email: [email protected]
WhatsApp: +86 18071531810
About HKVTEST
Wuhan Hongzhi Gaocetest Electrical Technology Co., Ltd. (HKVTEST)
is a manufacturer of electrical and power testing equipment with
16+ years of manufacturing experience, providing long-term
technical cooperation with State Grid Corporation of China and
China Southern Power Grid, alongside project partners across
multiple international markets.
We provide high-voltage test equipment and customized testing
solutions for power utilities, substations, electrical equipment
manufacturers, laboratories, contractors and maintenance teams.
