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ACCEPTANCE TESTS
GEK-106465A CIO Remote CAN Digital I/O Module 39
6. ACCEPTANCE TESTS
6.1. VISUAL INSPECTION
Verify that the relay has not suffered any damage during transportation, and that all screws are correctly fixed, and all
relay terminal boards are in good condition.
6.2. GENERAL CONSIDERATIONS ON THE POWER SUPPLY NETWORK
All devices running on AC current are affected by frequency. As a non-senoidal wave is the result of a fundamental
wave plus a series of harmonics from this fundamental wave, it can be deducted that devices running on AC current
are influenced by the applied waveform.
For a correct testing of devices running on AC current, it is fundamental to use a current and/or voltage senoidal
waveform. The pureness of a senoidal wave (lack of harmonics) cannot be expressed specifically for a specific
device. However, any relay incorporating sintonized circuits, R-L and R-C circuits, will be affected by non-senoidal
waveforms.
These devices respond to the voltage waveform in a different way to the majority of AC current voltmeters. If the
power supply network used for the testing contains wide harmonics, the voltmeter and relay responses will be
different.
When the device is tested, a power supply network with no harmonics in its waveform must be used.
It is important to point out that the accuracy with which the test is performed depends on the network and on the
instruments used. Functional tests performed with unsuitable power supply network and instruments are useful to
check that the device operates properly and therefore its operating characteristics are verified in an approximate
manner.
The following sections detail the list of tests for verifying the device functionality.