3042PT
30KV AC / 42KV DC PROOF TEST SYSTEM IN ONE PORTABLE UNIT
The 3042PT Pressure Tester can be used for many different applications in the electrical test industry. The unity generates 0-30kVAC and 0-42kVDC at 50mA continuous. Two analog or digital meters display the output voltage and leakage current present when testing any installation. High voltages are generated using a step-up solid insulation transformer. The unit uses a mechanical selector switch to switch between AC and DC voltages. After the unit is turned off any residual voltages in the test object will be discharged when the voltage selector control is pushed down.
PRINCIPLES OF OPERATION
All the units use the input voltage through a step up transformer to obtain the high AC voltages. In case of DC output the AC is rectified through a suitable rectifier capable of withstanding the high voltages. Some units use a combination of AC and DC that is switched to deliver AC or DC or both. In the case of VLF equipment a pseudo sine wave is produced through a number of switches and resistors.
The outputs are current limited and the unit automatically trips when a set limit is reached. When this occurs the cable is discharged and made safe through a built in discharge resistor. In case the circuit layout does not allow (in case of split units) the automatic discharge of the cable, a suitable manual discharge resistor is supplied The units are portable and simple to operate.
SPECIFICATION
Output Voltage
30kV AC, 50mA Continuous
42kV DC, 50mA Continuous
Safety Features
Variac Zero Interlock
Power Source
230V Mains
Transformer
Solid Insulation Vacuum Process
Dimensions
500 x 500 x 500 mm 45kg
Enclosure
304 Stainless Steel
Meters
Current 0-50mA Analog or Digital
Voltage 0-50kV Analog or Digital
Test Environment
Temperature Indoor and outdoor: 10ºC to + 45ºC.
Humidity: ≤ 85%
Supply Voltage
230V 50Hz, 15A
ACCESSORIES
5m HT lead
5m Earth lead
1.5m Mains lead