Description

“NTPL” MAKE 30KV100mA AC HIGH VOLTAGE TEST SET SERIES: AHVMNDR2 TYPE: 030K100m

APPLICATION:

“NTPL” make 30KV/100mA AC High Voltage Test Set is suitable for Power frequency applied voltage test on transformers, motors, insulators etc. for which the test parameters are within the technical scope of output of the test set. The set is capable of giving continuously variable High Voltage from 0-30KV AC

TECHNICAL features:

Input Voltage                                                                 :              230 Volts, single phase, 50Hz, AC.

Output Voltage                                                             :              Continuously variable from zero to 30KV AC.

Max. permissible leakage current at HT side         :              100mA max. at HT side.

Duty Cycle                                                                      :              Intermittent i.e. 5 minutes ON, 10 minutes. OFF.

• Output voltage variation: By means of manual rotation of Variable Autotransformer (Variac).
• Over load tripping adjustment at any setting from 25mA, 50mA & 100mA.
• Over Voltage Indication & Interlock provided.

The above test kit will be in 2 units i.e.

1. Control & Measurement Unit.
2. HV Transformer Unit.

Both the Units will be provided with wheels for easy movement.

CONTROL & MEASUREMENT UNIT:

• Power Mains ON – OFF MCB along with ‘MAINS ON’ lamp indication.
• ‘HT’ ON push button along with ‘HT ON’ lamp indication.
• ‘HT OFF’ push button.
• Continuously variable autotransformer of suitable capacity to increase/decrease the output test voltage up to the required voltage level.
• Memory device enables the meter of the test set to indicate the breakdown voltage by pressing the ‘Memory’ push even after the high voltage circuit is tripped OFF.

METERING:

• Digital voltmeter generally connected to the LT side and scaled in KV. Resolution: 0.1. Accuracy + 1% of range.
• Digital milliammeter along with ‘PRESS TO READ mA’ push button to read the leakage current.
• A ‘TIMER’ will be provided to measure the duration of applied HV. A Buzzer will indicate the end of test.

INTERLOCK & PROTECTION:

• Zero start interlocking will be provided to ensure that the HV circuit cannot be energised unless the regulator is initially kept or brought back to zero position.
• Automatic tripping mechanism for protecting the HV transformer against over loading. The tripping mechanism can be adjusted at different values as mentioned above. After tripping, High Voltage will be switched OFF.
• In case the output voltage crosses the maximum rated voltage a lamp & a buzzer will indicate over voltage.

The whole control circuitry will be housed within a sheet metal cabinet properly powder coated.

HV TRANSFORMER UNIT:

HV Transformer used in the Test Set will be cast resin of suitable capacity. The HV winding of the High Voltage Transformer is of graded insulation; one end of the winding being connected to the earth potential through a CT operated milliammeter & tripping device, while the other end remains in floating condition as HT Terminal.

The transformer will be designed to withstand frequent intermittent spark over or short circuit                     conditions under which such testing transformers are designed to operate.

ACCESSORIES:

• Input Mains Power Supply Cable -1 no. 3 meters.
• Interconnecting Cable between Control & Measurement Unit – HV Transformer. -1 Set-3 meters
• Earthing Cable –Green -1 no. 10meters.
• Discharge Rod: In AC High Voltage testing, the device under test is normally discharged through transformer winding. However, for device under test having large capacitance a discharge rod may be used and hence it is provided with the set.

DOCUMENTS:

Operation Manual, Works Test Report, and Warrantee Certificate will be supplied along with the set.

Approx. Dimension

Control & Measurement Unit

Length=585mmXWidth=432mmXHeigth=381mm

Transformer Unit

Length=440mmXWidth=330mmXHeigth=445mm

Approx. Weight:

Control & Measurement Unit      : 27 Kgs

Transformer Unit                            :  48 Kgs