Shenzhen generator rental protection principle automatic air switch: 1), undervoltage protection principle generator output voltage is normal when the load on the power generator rental, loss of pressure release button TA solenoid coil through the normally closed contacts and automatically switches often open auxiliary contact (already closed after closing) connected to the power supply side of the line voltage. 2 solenoid coil is energized, the electromagnetic suction greater than 5 spring tension, shock rod 4 being sucked down, automatic switch in the closing state. Due to the loss of pressure release for the generator set generator rental phone undervoltage protection, its setpoint start tuning voltage of less than 70% in the amount of voltage generator, transient episodes, so when the generator output voltage drops to less When voltage protection setting value where there is a generator rental, electromagnetic spring tension is less than appealing, the impact hit the lift rod hook to hook the lever disengages automatically switch under the action of spring breakers automatically trip. When you need the remote control, press the TA button tripped. 2), overcurrent protection schematics an overcurrent tripping the overcurrent protection device consists of two electromagnets release components. When the current is normal when the generator output overcurrent trip electromagnet suction less than the spring tension rod hook hook and hook prison, automatic switch is closed, the state shown in Figure 1. When the fat overload generator output current is greater than the starting current overload setting value, the solenoid coil suction greater than the spring tension, dynamic street iron absorption, the impact on the lift rod hit the hook to hook lever disengaged, automatic tripping. Unattended automated microwave generators, cable repeater stations with generators unattended automation In addition to having an ordinary turbine technical indicators, but also has the following indicators of an automated, self-starting when the electricity is interrupted, or phase voltage exceeds 380V (-15- + 10%) range or ground away after opening command, the unit should be able to automatically start, start cycle, including three times, each time you start time 3 ~ 10s, start interval less than 30s, 120s start time does not exceed the total emergency generator rental, start the success rate should be greater than 99%. 2, automatic loading and unloading switching power cut, after the success of the unit from the start, the unit automatically switches to the main power supply load, if the main fault with the unit, the unit automatically switches to the backup power supply. When utility power is restored to normal, automatic back to the mains supply, then unload the unit automatically shut down after a delay 3 ~ 5min. 3, automatic protection shutdown occurs when one of the following breakdown by unit, the unit automatically shut down to protect and send messengers signal: (1) high voltage or low voltage (2) oil pressure (3) high temperature (water-cooled units) (4) high speed or low speed (5) high frequency or low frequency 4, the unit should be able to automatically maintain the oil temperature in the range of 20 ~ 30 ℃, the cooling water temperature is in the range of 30 ~ 50 ℃ 5, the battery unit should be able to start automatically charging, automatic supply of fuel, oil and cooling water should be able to meet the continuous (or cumulative) run 240h. Where generator rental generator rental _ _ Fenggang on diesel generators supplied by diesel Electrical Equipment Co., Ltd., Dongguan ShangXi. Electrical Equipment Co., Ltd., Dongguan ShangXi Chai (www.dongguanfadianji.cn) strong, credible, diesel generator sets and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the diesel generator and you hand into the brilliant, for a better future!