Ups solar power input zero line of fire detection

Ups solar power input zero line of fire detection
To avoid UPS mains input zero FireWire reverse the machine with zero FireWire reverse detection.
· Bypass output humanity
To prevent users make three phase online ups work in BYPASS MODE not boot, causing electricity interruption, UPS and equipment are abnormal shutdown. ups mains input is normal, the default output without bypass. Must be turned on, will have a normal inverter output.
Input power factor correction
UPS with input power factor correction, under full load, the input power factor can reach above 0.99, so that the user's network environment is not contaminated.
· DC start
Under mains failure mode, if necessary use the UPS to start the computer or other loading equipment, UPS can boot directly to the battery current, making UPS more convenient and reliable.
· Bypass Protection
Bypass feature allows the UPS greatly enhance emergency response capabilities, while user load equipment for the power of special requirements, such as the voltage is not too high, UPS bypass supply voltage is too high protection, allowing users to load equipment from high voltage danger.
Automatic start function
When mains abnormal, enter the battery power mode until the end, UPS will shut down when the utility power is restored to normal, the United States and Europe and easy UPS will start automatically boot, normal power supply, one by one without user boot.
· Long-term power supply design
UPS offers a comprehensive long-term machine for users to choose. Configure the appropriate battery pack, allowing users to meet discharge requirements for the use of time in the case of different grid environments.

The inverter three phase online ups stage one pair amplifier transistor

The inverter three phase online ups stage one pair amplifier transistor is damaged, replace the same type of transistor after running for some time because they burn too much current, caused by excessive current reasons:
- Overcurrent failure. When the inverter output overcurrent, the overcurrent protection circuit does not work;
- Pulse Width Modulation (PWM) component failure, the two complementary output waveform asymmetry, a long lead-time, on-time and short the other, so that the work of unbalanced arms, even the arms are turned on simultaneously, resulting in two tube is damaged;
- Power difference between the larger tube parameters, then even if the input waveform symmetry, the output will be asymmetrical, the waveform is output transformer, causing magnetic bias, ie the flux imbalance, leading to the accumulation of down transformer saturation current surge, burn power tube, and a burn, the other also will burn.

 

In normal mains

In normal mains, electricity surge through absorption filter circuit → AC switch DC circuit AC circuit → → DC converter and convert the AC output supply load, and at the same time charging the battery; Once microprocessor control circuit detected mains interruption, → immediately convert DC three phase online ups discharge and converts alternating current circuit → AC output supply load. If UPS microprocessor control circuit detects a fault, then UPS will jump to borrow from the relay (RELAY) bypass (BYPASS), mains power supply load, and audible warning the user.