3550PT
35kV AC, 50mA Continous, Mains Powered Proof Tester
Test engineers and technicians need to proof test cables and switchgear after installation or rework to existing systems. The Adret range of proof testers was designed with simplicity of use and maximum operator safety in mind. The range offers many different models from DC to AC and VLF (very low frequency) as well as combination AC and DC models.
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
35kV AC, 50mA Continuous
Safety Features
Variac Zero Interlock
Power Source
230V Mains
Transformer
Solid Insulation Vacuum Process
Dimensions
Control 500 x 305 x 457 mm 15kg
HV Unit 500 x 305 x 457 mm 25kg
Enclosure
Pelican Case, IP67 Rated
Meters
Current 0-50mA Analog or Digital
Voltage 0-35kV Analog or Digital
Test Environment
Temperature Indoor and outdoor: 10ºC to + 45ºC.
Humidity: ≤ 85%
Supply Voltage
230V 50Hz, 15A
ACCESSORIES
Carry bag for leads
Mains lead
Earth lead