These requirements cover energy management equipment and associated sensing devices rated 600 volts or less and intended for installation in accordance with the
National Electrical Code, NFPA 70.
This equipment energizes or de-energizes electrical loads to achieve a desired use of electrical power. The equipment is intended to control electrical loads by
responding to sensors or transducers monitoring power consumption, by sequencing, by cycling the loads through the use of preprogrammed data logic circuits, or
any combination thereof. Devices responding to signals from a utility company may receive the signals over the power lines or as radio signals.
These requirements also cover equipment int ended for connection only to a low-voltage circuit of limited power supplied by a Class 2 transformer.
These requirements do not cover switching devices operated by a mech anical or electromechanical clock mechanism to energize or de-energize loads. These
requirements do cover electronic clock operated energy management equipment.
A product that contains features, characteristics, components, materials, or systems new or different from those in use when the Standard was developed, and that
involves a risk of fire, electric shock, or injury to persons, shall be evaluated using the appropriate additional component and end-product requirements as determined
necessary to mai ntain the level of safety for the user of the product as originally anticipated by the intent of this Standard.
| Edition : | 3rd |
| Number of Pages : | 154 |
| Published : | 12/23/1998 |
