T&R KV30-40D MK4 High Voltage AC Test System
Reliable insulation testing requires a stable and controllable high voltage source. The T&R KV30-40D MK4 High Voltage AC Test System provides a flexible solution for testing insulation systems and measuring electrical breakdown voltage up to 30kV. Its robust design allows engineers to perform accurate high voltage tests on electrical equipment and plant components.
High precision measurement is supported through large true RMS digital meters that clearly display both voltage and current values. These backlit meters provide excellent visibility during operation, even in low light environments. As a result, technicians can monitor test conditions closely while maintaining safe and controlled operation.
Accurate High Voltage Testing
Engineers require dependable control during insulation testing procedures. The T&R KV30-40D MK4 delivers variable AC output from zero up to 30kV, enabling controlled voltage increases during testing. This allows gradual stress testing of insulation systems while providing clear feedback through accurate metering.
Protection features help safeguard both the equipment under test and the operator. A variable electronic trip can be set between 10 and 110 percent of the rated output, providing adjustable overload protection. When a breakdown occurs, the system gives a clear visual indication so the operator can respond immediately.
Safe and Controlled Operation
Operational safety remains a priority during high voltage testing. For this reason, the T&R KV30-40D MK4 includes a zero volt interlock that prevents energising the output unless the voltage control is fully returned to zero. This ensures that tests always start from a safe condition.
Additional safety is provided through an external 24V DC interlock circuit that allows integration with emergency stop switches and enclosure interlocks. The unit also includes automatic mains voltage selection and a selectable test timer. Together these features make the system suitable for both laboratory and field use.
Key Features
- High voltage AC output adjustable from zero to 30kV
- True RMS digital meters measure both voltage and current
- 1.2kVA output capability supports demanding insulation tests
- Key operated supply switch prevents unauthorised operation
- Dual overload protection protects equipment during testing
- Variable electronic trip protects the test object
- Adjustable trip setting between 10 and 110 percent of rated output
- Integrated test timer supports controlled timed testing
- Zero volt interlock prevents energising the output at unsafe levels
- External 24V DC interlock supports emergency stop circuits
- Visual indication alerts the user when test piece breakdown occurs
- Large backlit meters improve visibility during testing
Technical Specifications
| Manufacturer | T&R Test Equipment |
| Product name | T&R KV30-40D MK4 High Voltage AC Test System |
| Output voltage range | 0 to 30kV AC adjustable output |
| Output power rating | 1.2kVA maximum output capability |
| Metering type | True RMS digital voltage and current meters |
| Meter display | Backlit meters with 19mm digit height |
| Trip protection range | Adjustable electronic trip from 10% to 110% of rated output |
| Overload protection | Dual overload protection system |
| Test timer | Selectable test durations of 5, 10, 15, 20, 30 seconds and 1, 2, 3 or 5 minutes |
| Timer alert | Audible alarm when selected test time ends |
| Safety interlock | Zero volt output interlock prevents energising at unsafe settings |
| External interlock | 24V DC interlock circuit for safety switches and enclosures |
| Automatic mains selection | Automatic input voltage selection for flexible operation |
| HV output lead | Permanently connected 2 metre high voltage output lead |
| Dimensions | 400 x 300 x 510 mm |
| Weight | 42 kg |
Comparison Table
| Model | Maximum Output Voltage | Output Power |
| KV10-120 | 10kV | Variable depending on configuration |
| KV15-80 | 15kV | Variable depending on configuration |
| KV30-40D MK4 | 30kV | 1.2kVA |
Document Downloads
What’s Included
- User manual
- Calibration certificate
- Spare fuses
- Keys
- Mains lead
- Earth lead
- ES30 earthing stick
- Two T bars
- Interlock plug