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TEST PROCEDURES
Hi-Pot Test
THIS IS A MANDATORY TEST
Note: If an the unit under test requires disassembly as part of the repair, it MUST be Hi-Pot
tested before being returned to the customer to ensure that there is no potential shock hazard.
This test requires a Hi-Pot tester with a ground bond attachment to perform this test.
Connections:
The Hi-Pot tester connects to the unit under test (UUT) by means of a wiring harness. The
AC line cord of the UUT plugs into the Hi-Pot tester AC adapter box. The return line connects to
all output connectors.
Hi-Pot Tester Settings:
Note: This Hi-Pot test uses two different voltage levels to test leakage current at two locations
to ensure there is no danger to the customer once they receive their system back from repair.
Be sure to perform the test at both voltage levels and test locations on the product.
All units - 1500 VAC, rise time = 1 second, dwell = 3 seconds, current limit = 3.5 mA
• Connect the AC mains cord to loudspeaker under test. Plug the other end of the AC cord
into the Hi-Pot tester AC adapter box. The AC adapter box connects to the HIGH VOLTAGE
(HV) connection on the Hi-Pot tester.
• Connect the Hi-Pot tester RETURN line to all earthed parts.
• With the tester set to the above parameters, perform the test. If the unit fails, troubleshoot it
and repair the problem. Once the unit is repaired, repeat this test. If it passes at this level,
perform the higher level test listed below.
All units - 2500 VAC, rise time = 1 second, dwell = 3 seconds, current limit = 5.0 mA
• Connect the Hi-Pot tester RETURN line to all output connectors.
• With the tester set to the above parameters, perform the test. If the unit fails, troubleshoot it
and repair the problem. Once the unit is repaired, repeat the Hi-Pot and the ground bond
tests to ensure the unit is safe to return to the customer.
Ground Bond Test
Note: This test only needs to be performed if the chassis ground wire of the unit has been
removed or disturbed as part of a repair. If it has not, this test does not need to be performed.
This test measures current handling capability between the ground blade on the AC inlet or
mains plug and the earth bond point of the unit.
Ground Bond Tester Settings:
10A,
< 12VAC open circuit, < 0.1 Ohms from AC earth terminal on IEC connector in chassis, to
earth bond point on rear of chassis. Test duration = 3 seconds.
• Connect the AC mains cord to the back of the loudspeaker under test. Plug the other end of
the AC cord into the ground bond test box.
• With the tester set to the above parameters, perform the test. If the unit fails, remove the top
cover and repair the problem. Once the unit is repaired, repeat the Hi-Pot and the ground
bond tests to ensure the unit is safe to return to the customer.
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