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KV30-40D Mk4 30KV 40mA – High Voltage AC Test System
The KV30-40D Mk4 high voltage AC test set is a general purpose test instrument designed for testing insulation systems and the measurement of breakdown voltage on electrical plant and components.
The output voltage is variable up to 30kV. A zero-voltage interlock is provided, ensuring that the output may only be energised with the voltage control at zero. The output voltage and current are metered by large true RMS reading digital meters.
The unit features automatic mains voltage selection and an external 24VDC interlock circuit for connection of emergency-off switches and interlock switches on the test enclosure.
The test object and output are protected by an adjustable electronic current trip. The trip level may be set to 10-110% of the rated output in 10% steps.
Breakdown of the test object is visibly indicated and the unit must be manually reset after a trip condition before testing can be resumed.
An optional test timer can be provided for pre-selectable test times of 5 seconds to 5 minutes.
The unit is supplied in a compact, portable case with a permanently connected 2 metre long HV output lead.
Features
• 0-30kV output voltage
• Automatic mains voltage selection
• Key operated supply switch to prevent unauthorised operation
• Dual overload protection
• Variable electronic trip – 10-110% of rated output
• Voltage and current digital metering
• Zero-volt interlock
• External 24VDC interlock circuit
• Optional Test timer
• Emergency stop
• Visual indication of test piece failure
KV30-40D Mk4 Specification
Supply Requirements
115V/230V±10% auto-selecting 50/60Hz 1ph 1200VA max.
Output
The output of the KV30-40D Mk4 is supplied via a permanently connected partially screened high voltage cable. This stows in the lid for transit along with the ES30 earthing stick.
The output of the KV30-40D Mk4 is rated at 40mA on a duty cycle of 5 minutes on/15 minutes off or 20mA continuously. These ratings are based on an ambient temperature of 25°C.
Metering
The output voltage and current are metered by large, accurate true RMS digital meters. The meters are backlit and have a digit height of 8mm and analogue simulation.
Optional Test Timer
An optional pre-selectable test timer can be provided for timed tests of 5, 10, 15, 20, 30 seconds, 1, 2, 3 or 5 minutes. An alarm sounds when the test time has ended.
Overload Protection
Two overload protection circuits are provided on the units. The first is user selectable, and allows trip currents between 10% and 110% of the rated output to be set. A trip condition is indicated by an illuminated push button and an audible alarm. The second trip circuit is a magnetic circuit breaker operating on the primary of the HV transformer. This operates on large overloads (such as flashovers).
Accessories supplied with unit
Supply lead, spare fuse set, operating manual, 5m earth lead, ES30 earthing stick.
Protection and Safety
In addition to the output protection the input and control supplies are protected by fuses.
All units are designed to meet the requirements of BS EN61010.
An earth terminal is provided on the transformer which must be connected to a low impedance local earth.
An emergency stop will cut all power to the output, when activated.
Temperature Range
Storage -20°C to 60°C Operating 0°C to 45°C
Dimensions Weight
300 x 400 x 470mm 42kg
Special Products
If you require a different output voltage test system, please contact us with your specification and we will quote for a custom design.
The KV30-40D Mk4 is one of a family of 1200VA high voltage units spanning the range 6kV 200mA to 30kV 40mA. All supplied with digital metering.
