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Description / Abstract:
This standard applies to surge-protective devices (SPDs)
intended to be installed on the load side of the service equipment
connected to 50 Hz or 60 Hz alternating current (ac) power circuits
rated at 1000 V (root mean squared [rms]) or less. Performance
characteristics and standard methods for testing and rating are
established for these devices, which may be composed of any
combination of components. The tests in this standard are aimed at
providing comparisons among the variety of surge-protective devices
available.
Purpose
The purpose of this standard is to provide users, independent
laboratories, and manufacturers with test methods and test
specifications applicable to low-voltage surge-protective devices
used on the load side of the service equipment, intended for
limiting transient overvoltages that can appear on ac power
circuits of 1000 V (rms) or less.