Electrotechnics experiment box is mainly on "electrotechnics" and "circuit principle" high voltage electrical experiment, such as the single-phase AC circuit, three-phase circuit, the fluorescent lamp circuit experiment. This experiment case include module units and components library panel of combining form, are all made of European standard safety socket and the experiment of wire, wire is convenient, reliable contact, and long service life, high efficiency, effectively prevent electric shock hazard. Experiments on the front panel with element symbols and main parameters for the student identification. Visual in experiment box structure is compact and practical, safe and reliable, effectively raises student's beginning ability, easy maintenance and simple way. Can meet all kinds of high, electrician in a secondary schools and vocational technical college typical experiments.

II. Technical parameter

(1) Power supply: three-phase 220 v + 10%, 50 hz

(2) Coupling inductance of a couple.

(3) Single-phase transformer, transformer ratio than 36 v to 220 v, 50 w.

(4) Three-phase headlamp unit load, each phase can be inserted into the 15 w bulb 3 only.

(5) Three-phase load capacitance, 0.47uf/400V,luf/400V,2uf/400V  each type with 3 units

(6) Three-phase switch l only.

(7) Components set: is there a fuse holder 3, ballast (20 w) l only, only, the starter resistance, luf,2uf,4uf capacitor element and so on.

Pointer type voltmeter head l

(8) Pointer type current meter head l.

(9) Three phase four wire leakage circuit breaker is a piece of choose and buy, the user selected according to specific circumstances.