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High Insulation Resistance Applications

Both vacuum and gas-filled relays are often used in applications, particularly test equipment, which require very high insulation resistance due to the sensitivity of the measurements being conducted. Standard Kilovac relays often have sufficiently high insulation resistance for many applications and other Kilovac relays can be modified to meet special insulation resistance requirements upon request. The chart below shows the typical insulation resistance of standard Kilovac relays. If you have an application that requires a high insulation resistance relay, call our Application Hot Line at 1-800-253-4560 and tell us of your requirement.

Recommended Relays for High Insulation Resistance Applications
Part Number Rated Voltage
(kV) 		Contact Form Contact to Case Insulation Resistance* Contact to Contact Insulation Resistance*
@ 1000 Volts @ Rated Voltage @ 1000 Volts @ Rated Voltage
HC-1 series 3.5 C 9.5 x 10 13 1.5 x 10 12 2.5 x 10 13 3.6 x 10 13
K41 series 5.0 A,B,C,P,R 2.4 x 10 13 3.2 x 10 13 7.0 x 10 12 7.5 x 10 12
K44 series 8.0 P 1.4 x 10 14 1.6 x 10 13 3.3 x 10 13 3.8 x 10 13
K43 series 10.0 A,B,C,P,R 2.4 x 10 13 4.4 x 10 13 9.0 x 10 12 1.5 x 10 11
K81 series 10.0 A,B,C N.A. N.A. 5.7 x 10 13 7.0 x 10 13
KC-2 series 15.0 C 3.1 x 10 13 3.5 x 10 12 3.8 x 10 14 5.8 x 10 13

Figure 42.

Note: Measurement of insulation resistance requires strict control of the test environment. Contact Kilovac for more information.

* Typical values; measured in ohms