Electrical Safety Systems
The major test items of the Electrical Safety devices include AC/DC/IR Hipot tests for electronic components, and Ground Bond and Leakage Current tests for appliances. In addition to confirming whether the products comply with the safety specifications such as UL, CE, TUV and etc., the main purpose of the test is to ensure human safety and product reliability.
Most manufacturers perform production line tests as a means of ensuring overall product quality. Chroma instruments can help improve product quality, testing efficiency, and product safety. Some typical tests include:
A dielectric strength test determines the suitability of the dielectric or insulation barrier between hazardous and non-hazardous parts. The dielectric strength test is a fundamental method of ensuring that a product is safe before it is placed on the market.
Insulation resistance (IR) measurements are generally conducted to determine the actual resistance between the two points of test. It serves as a practical and effective method of verifying suitability of the product for use by the public.
Leakage Current Tests
All products that use an AC line source as power have some associated leakage current when the device is turned on and operating. This leakage current normally flows from the AC line source through the ground path in the product and back to earth ground through the ground blade on the power cord.
A ground continuity test checks that a path exists between all exposed conductive metal surfaces and the power system ground. This ground circuit provides the fundamental means of electrical shock protection for a user.
A ground bond test verifies integrity of the ground path by applying a high current (typically 25A to 40A), low voltage source to the ground path circuit. This test is similar to the ground continuity test with the additional benefit of verifying how a product will perform under actual fault conditions.
Chroma Systems Solutions can help with instruments and systems that can perform these tests and more, while streamlining the test process.
Guardian Multi-Channel Hipot Tester – 19020
10/4 channels; AC/DC/IR 3 in 1 EST test; OSC, Flashover detection; 1MΩ~50GΩ IR measurement.
Guardian Hipot Tester AC/DC/IR/SCAN – 19050
AC/DC/IR 3 in 1 EST test; AC 5kV, DC 6kV output; 1kV IR test, 1MΩ~50GΩ IR measurement.
Guardian Hipot Analyzer – 19055
Corona Discharge Start Voltage (CSV), Flashover Start Voltage (FSV), BreakDown Voltage (BDV)
Guardian Hipot Analyzer – 19056/19057
10kV AC, 20kV DC withstand voltage test; 0.1MΩ~50GΩ insulation impedance test; BDV; HVCC; HFCC; OSC; GFI
Sentry Hipot Tester AC/DC/IR – 19070
AC/DC/IR 3 in 1 test; AC 5kV and DC 6kV output; 1kV IR test; 1MΩ~50GΩ IR mesurement; Ground continuity check
Hybrid Wound Component EST Scanner – 19035
5KVAC & 6KV DC Hipot Test; 1MΩ~50GΩ /5kV IR Test; 10mΩ~100kΩ DCR Test; 8 Channel Scanner
Wound Component EST Analyzer – 19036
5 in 1 composite analyzer (ACWV/DCWV/IR/Impulse/DCR); IR test; Impulse Winding Test (IWT); DCR measurement
Capacitor Leakage Current/IR Meter – 11200
0.001uA - 20.00mA leakage current test range with 4 digits resolution
100Hz-50kHz LCR Meter – 11021/11021-L
Test frequencies: 100Hz, 120Hz, 1kHz and 10kHz (9.6kHz); 1kHz, 10kHz, 40kHz, 50kHz
50Hz-100kHz LCR Meter – 11022/11025
0Hz, 60Hz, 100Hz, 120Hz, 1kHz, 10kHz, 20kHz, 40kHz, 50kHz, 100kHz test frequencies