Accuracy testing kit
The ATK is an accuracy testing kit which allows to check periodically the accuracy of the built-in watthour standard against a reference standard traceable to NIST.
The accuracy testing kit comes with a pulse interface, a BNC coaxial cable, an extension cable and a test jack. The test jack has a pair of #4 AWG current flexible leads (24 inches long) and a pair of #18 AWG voltage leads.
The ATK-3 is compatible with MT-1/NT3 and MT-1/NT9. The ATK-4 is compatible with MT-1/NT4.
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