Does anyone know about the failure of all UPS varieties?

UPS means:UPS Express，ups（united parcel service, inc.United Parcel Service.

Delivery Services) was founded in 1907 and is headquartered in Georgia, USA.

The City of Atlanta is the world's leading logistics company, providing a variety of solutions designed to improve the efficiency of global business management, such as parcel and cargo transportation, international** facilitation, and advanced technology deployment. UPS has a network of more than 220 countries and regions around the world, with 10,000 employees. In 2019, UPS had a turnover of $74 billion.

UPS global logistics network.

With a strong logistics network covering more than 220 countries and regions, UPS is always upgrading its global smart logistics network in an ever-changing business environment to support the growth of customers and ourselves. As the world's leading facilitator, UPS has a highly integrated global service and transportation network, supporting a three-dimensional integrated communication network system of different modes of transportation, which can realize multimodal transportation by sea, land and air.

The "seamless connection" operation helps customers' shipments reach global markets.

Reasons why UPS cannot be started and how to deal with it.

1. Reasons. 1) The battery is not used for a long time, and the voltage is low.

2) The input AC and DC power cord is not connected properly.

3) The internal boot circuit of the UPS is faulty.

4) UPS internal power supply circuit failure or power short circuit.

5) The internal power device of UPS is damaged.

Solution: 1) Fully charge the battery.

2) Check whether the input AC and DC lines are in good contact.

3) Check the UPS power-on circuit.

4) Check the UPS power supply.

Circuit. 5) Check whether the components of the internal rectifier, boost, inverter and other parts of the UPS are damaged.

6) UPS suddenly appears buzzer during normal use.

Long sound alarm. The reason why UPS won't start.

2. Reasons. 1) The user has a large load or a large shock load to start.

2) Sudden short circuit at the output end.

3) UPS internal inverter circuit failure.

4) UPS protection detection circuit malfunction.

Treatment: Jane Tsai.

1) A load is put in the order of first large and then small. bIncrease the power capacity of the UPS.

2) Check whether the output of the UPS is short-circuited.

3) Check the inverter of the stopper.

4) Check the internal leakage control circuit of UPS.

5) UPS works normally but the load equipment is abnormal.

3. Reasons: 1) The UPS output zero ground voltage is too high.

2) The UPS ground wire and the load equipment ground wire are not connected at the same point.

3) The load equipment is subject to abnormal interference.

Solution: 1) Check the UPS grounding, and if necessary, a 1-3K resistor can be placed between the zero ground at the output end of the UPS.

2) Connect the UPS ground to the same point as the load ground.

3) Restart the load device.