Biddle 220015

• Continuously variable test voltage
• Rugged field construction
• Compact and portable

The Biddle Dielectric Test Sets measure leakage current while applying a dc voltage at or above the insulation system's operating level. This measurement aids in determining the insulation system's ability to withstand overvoltages such as lightning strikes and switching surges. 

DC vs AC High-Potential Testing 

Direct current high-potential testing provides several advantages over alternating current. Direct current test equipment uses far less power, provides fast charging of highly capacitive test samples, can be easily transported to the test site and costs less. Additionally, the dc test can detect incipient breakdown without the possibility of damage to good insulation. 

Features and Benefits

• Compact and portable
• Air insulated, uses no oil
• ±2% accuracy
• Leakage current measurement as low as 0.1 mA
• Continuously variable test voltage with zero-start safety interlock
• Fast charging of high-capacitance samples
• Current guard circuit for highly accurate measurements
• Strip chart recorder for hard copies (optionally available) Safety and Reliability
• Input and output line circuit breaker
• Output current overload relay
• Zero-start interlock for high-voltage output
• Pushbutton controls and indicating lights for high voltage ON/OFF
• Full circuit breaker protection
• Connection for external permissive and safety interlocks 15 kV model