What does LS stand for in the circuit diagram

The symbol Pe in the electrical system diagram represents the equipment power (installation power), Pjs represents the calculated power, Ijs represents the calculated current, and IS represents the isolation module (in the fire protection system diagram).

Power refers to the amount of work done by an object in unit time, that is, power is a physical quantity that describes the speed of work. The workload is fixed, and the shorter the time, the greater the power value.

Scientifically, the amount of electricity passing through any section of a conductor in unit time is called current intensity, which is called current for short. Usually represented by the letter I, the unit is ampere.

Isolation module, also known as isolator, is a product of signal interference and conversion in the industrial field, which has a wide range of applications and is most commonly used in environmental protection and automation industries.