Load type and data, excerpt from IEEE standard.

For simulation purposes, loads are most often defined as the following types:

—  Constant kVA load: such as running motors where a “constant kVA” characteristic means that the complex power S = P + jQ  will be held constant.

—  Constant impedance load: typically used for a motor which is starting, or for many static (non-motor) loads.

—  Constant power and constant current loads: some load flow programs offer options for other forms of load modeling. For example, some kinds of static power conversion equipment might better be modeled as having constant real power and/or constant current characteristics.

—  Generic load: used as general complex loads where the real and reactive powers (P and Q) are complex functions of terminal voltage and frequency.

MCR Function of ACB

MCR (Making Current Release)，在斷路器投入期間，若發生短路時的瞬跳保護功能，依廠牌型號不同，有標配和選配的不同。

MCR (Making Current Release)，When ACB closing, instantaneous release intended for self-protection of the breaker during short-circuit fault. MCR can be optional depend on brand.