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Product description:

This module is specially designed for the application scheme of standby power supply, which can automatically monitor the state of electricity, automatically control the starting and stopping of the generator set, and automatically control the switching of dual power supply switch (ATS function); indicate the current working status, relevant parameters and fault content through high-brightness LED and LCD; control work. Energy and so on can be adjusted, modified and redeveloped according to the specific requirements of users.

Main features:
1、Voltage regulation < ±1%.
2、Soft start voltage ramping.
3、Sensing voltage loss protectionExcitation Adjustment Functions.
4、120 or 240VAC sensing, jumper selectable.
5、Under frequency roll off protection.
6、With under frequency LED indicator.
7、can be copper jumper settings to suit different power generators 
8、 prominent features: a stable exchange circuit provides an adjustable negative feedback inhibition of components including the prevention of damage to the sub-loop voltage spikes AVR components and reduce the amount of noise in the generator terminals. 
9、the selling point: a low-pass filter to prevent the distortion of waveforms affect the operation of the AVR.

The definition of the different colors:

1、which is the meaning of three colors: red for Stanford's early products, the use of capacitor WIMA, the quality is very good. Blue indicates the latter product, capacitor EPCOS, the quality is also good. Gray is the last two years before that, the capacitance of AV, and the packaging is different. 
2、due to different capacitors, the price will be different 
3、although prices vary, but the quality is the same. But some maintenance staff always feel better in red, red is also the most expensive.

Specifications: 
Operating voltage range: 150 ~ 265 V 
The maximum current is: 4A