Dielectric Breakdown Voltage of Insulating Oils

Test Method
The majority of high-voltage transformers, cables, switchgears, transducers, capacitors, and rectifiers use insulating oils for insulating electrically live parts and to carry off thermal energy. The quality of the insulating oil must be checked at regular intervals to ensure a long equipment service life. The most important requirement of an insulating oil is a high dielectric strength. Determination of the dielectric breakdown voltage of insulating oils provides an early detection method for any reduction in the insulating properties.

Automatic Portable Dielectric Breakdown Tester
Conforms to ASTM D877, D1816 and related test specifications

Output voltage: 75kV

Features 2.8” ultra bright color display for optimal readability and mobility

Built-in printer offers direct evaluation and reporting of results

Internal battery, external 12V power supply

Automatic Vernier function for electrode gap spacing

Measurement of Silicone based oils

Internal temperature measurement of oil sample

Bluetooth PC Connectivity and USB Flashdrive Capability

Specifications
Conforms to the specifications of:
ASTM D877, D1816; BS EN 60156; CEI EN 60156; IEC 156; VDE 0370 Pt. 5
Output Voltage: Up to 75kV rms symmetrical
Voltage measurement accuracy: 0 - 75kV ±1kV
Voltage slew rate: 0.5 - 10kV/s
Resolution (displayed): 0.1kV
Power Supply: 85V - 264V, 47Hz - 63Hz, 12V external supply
Power consumption: 60VA
Internal rechargeable battery: 1 x 12V / 7.2Ah
Switch-off time on flashover: < 5μs
Measurement of oil temperature: 0 - 100°C / 32 - 212°F
Temperature Resolution: 1°C / 1.8°F
Display: 2.8” color (ultra bright)
Selectable Programs: ASTM D1816-04-1mm, ASTM D1816-04-2mm, ASTM D877-02A, ASTM D877-02B, IEC 156/95
Customer-specific programs: Unlimited
PC Software: Included
Printer: Dot Matrix Hard Copy Output
Interface: Bluetooth
USB: USB memory stick
Operating Temperature: -5°C - 45°C (23°F - 113°F)
Storage Temperature: -20°C - 60°C