C62.36-2000 IEEE Standard Test Methods for Surge Protectors by IEEE

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Extra info for C62.36-2000 IEEE Standard Test Methods for Surge Protectors Used in Low-Voltage Data, Communications, and Signaling Circuits

Sample text

Commonly, probes that have been stressed by overvoltage may not fail outright, but often read significantly low. Regular calibration of the measuring equipment is especially important in surge measurement work. High-impedance probes used for high-voltage measurements may be bulky, and this leads to difficulties in minimizing magnetic induction effects. Such probes are often difficult to compensate exactly. An alternative is to use custom-designed differential probes that use lower impedances (thereby reducing noise pickup), have good common mode rejection at the frequencies required, and require no compensation.

3 Within one hour after the end of environmental cycling, the protector shall satisfy specified performance requirements (see Clause 9). 14 Multiport coupling test This test is performed to verify that a surge, applied to one of the ports or other designated terminals of a multiport surge protector, does not result in a coupled surge that exceeds a specified amplitude or duration on other ports of the surge protector. This test is intended for multiport surge protectors that provide surge protection for paired-conductor, coaxial, or other circuits (see Table 9, Note 1) that serve equipment within a premises.

If the protectors are known to be sensitive to the polarity of the dc supply, they should be tested for insulation resistance and dc-limiting voltage with both positive and negative polarities. The protectors shall satisfy performance requirements for insulation resistance and dc-limiting voltage at each measurement. 3 Within one hour after the end of environmental cycling, the protector shall satisfy specified performance requirements (see Clause 9). 13 Environmental cycling with ac surges test This test is performed to verify that a voltage-limiting surge protector can conduct an ac current of specified parameters while undergoing temperature cycling at high humidity for a specified period of time.

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