IEEE Draft Standard Requirements for Direct Current Instrument Shunts

The dc instrument shunts within this standard apply to shunts for use in direct current circuits to extend the current measuring range of devices (e.g. instruments, meters, protective relays, or low-voltage trip systems). The design and test principles within this standard may be applied with suitable exceptions for shunts constructed for special requirements; for example, those having unusually high or low current ratings or voltage drops, special or unusual ranges, and nonstandard terminal arrangements for special applications.