The test is a means to qualify a device s ability to operate safely during rated electrical conditions.
High voltage hipot test.
Performed by stressing the insulation of the product far.
Such a test applies a voltage to the dut that is much higher than normal operating voltage.
A dielectric strength test commonly called a hipot test dielectric withstand or high potential is a stress test of the insulation of a device under test dut.
To hipot test a net you connect all of the contacts in the net to high voltage and connect all other contacts in the device to ground.
In the motor repair industry the test voltage commonly used is 2e 1000v.
The hipot test the dielectric voltage withstand test is commonly known as the hipot test.
A dielectric withstand test or pressure test high potential or hipot test is an electrical test performed on a component or product to determine the effectiveness of its insulation the test may be between mutually insulated sections of a part or energized parts and electrical ground.
As per iec 60950 the basic test voltage for hipot test is the 2x operating voltage 1000 v the reason for using 1000 v as part of the basic formula is that the insulation in any product can be subjected to normal day to day transient over voltages.
For a 460v motor this difference is about 200v for a 4000v motor 945v and for a.
The reason for the additional 1 000v is that insulation can be subjected to various surges in day to day usage and experiments have provided clear indications that these overvoltages can be as high as 1 000v.
High potential hi pot dc testing guidelines for medium voltage cables photo credit.
Hipot test is the most common type of electrical safety test.
Therefore the formula in the standards for dc hipot test voltage with used motors is as seen below.
For example if you have a wire that connects two pins the high voltage will be simultaneously apply to both of those pins and the entire wire will be raised in voltage.
The responsible safety officer should be consulted regarding the equipment and the appropriate personnel protection requirements.
Typically 1000v ac plus twice the normal operating voltage.
This formula calculates a test voltage 10 lower than the formula used in the standards.
