2909577 datasheet(13/28 Pages) PHOENIX

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High-voltage test (HIPOT)

This protection class II power supply is subject to the Low

Voltage Directive and is factory tested. During the HIPOT

test (high-voltage test), the insulation between the input

circuit and output circuit is tested for the prescribed electric

strength values, for example. The test voltage in the high-

voltage range is applied at the input and output terminal

blocks of the power supply. The operating voltage used in

normal operation is a lot lower than the test voltage used.

6.1

High-voltage dielectric test (dielectric strength

test)

In order to protect the user, power supplies (as electric

components with a direct connection to potentially

hazardous voltages) are subject to more stringent safety

requirements. For this reason, permanent safe electrical

isolation between the hazardous input voltage and the

touch-proof output voltage as safety extra-low voltage

(SELV) must always be ensured.

In order to ensure permanent safe isolation of the AC input

circuit and DC output circuit, high-voltage testing is

performed as part of the safety approval process (type test)

and manufacturing (routine test).

6.2

High-voltage dielectric test during the

manufacturing process

During the manufacturing process for the power supply, a

high-voltage test is performed as part of the dielectric test in

accordance with the specifications of IEC/UL/EN 61010-1.

The high-voltage test is performed with a test voltage of at

least 3 kV AC / 4.2 kV DC or higher. Routine manufacturing

tests are inspected regularly by a certification body.

6.3

High-voltage dielectric test performed by the

customer

Apart from routine and type tests to guarantee electrical

safety, the end user does not have to perform another high-

voltage test on the power supply as an individual

component. According to EN 60204-1 (Safety of machinery

- Electrical equipment of machines) the power supply can be

disconnected during the high-voltage test and only installed

once the high-voltage test has been completed.

High-voltage tests up to 2 kV AC / 2.8 kV DC

can be performed as described.

The test voltage should rise and fall in ramp

form. The relevant rise and fall time of the

ramp should be at least two seconds.

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