OUR CLIENTS QUESTIONS

FREQUENTLY ASKED QUESTIONS

GENERAL QUESTIONS

What is a UPS?

An Un-interruptible Power Supply is a device that sits between a power supply (e.g. a wall outlet) and a device (e.g. a computer) to prevent undesired features of the power source (outages, sags, surges, bad harmonics, etc.) from the supply from adversely affecting the performance of the device.

Benefits of UPS at Home and Work

A UPS has internal batteries to guarantee that continuous power is provided to the equipment even if the power source stops providing power. Of course the UPS can only provide power for a while, typically a few minutes, but that is often enough to ride out power company glitches or short outages. Even if the outage is longer than the battery lifetime of the UPS, this provides the opportunity to execute an orderly shutdown of the equipment.

Advantages: Computer jobs don’t stop because the power fails. Users not inconvenienced by computer shutting down. Equipment does not incur the stress of another (hard) power cycle. Data isn’t lost because a machine shut down without doing a “sync” or equivalent to flush cached or real time data.

Sort of Functions Do UPS Have

A UPS traditionally can perform the absorbs relatively small power surges, smooth out noisy power sources while continuing to provide power to equipment during line sags. Provide power for some time after a blackout has occurred. In addition, some UPS or UPS/software combinations provide with automatic shutdown of equipment during long power outages, monitoring and logging of the status of the power supply, display the voltage draw of the equipment, restart equipment after a long power outage and provide alarms on certain error conditions.

What is an Off-Line UPS?

An Off-line UPS will supply power only when there is a power failure.

What is a Line Interactive UPS?

Under normal situations, a Line Interactive UPS will supply power from bypass through transformer. At this moment, the transformer becomes a charger. When power fails, the transformer will transfer battery power to AC output.

Lifetime of a UPS Battery?

The battery lifetime depends on the ambient temperature and frequency of charging and discharging. Higher ambient temperature and frequent charging and discharging will reduce batteries’ lifetime. We offer one year battery lifetime guarantee. However, the battery lifetime is close to three years under normal use.

Types of Battery is used in UPS?

Most UPS use Lead-acid maintenance-free batteries. This kind of battery is sealed so the UPS can be located with any direction and it does not void the poison gas during charging and discharging. So it also could be an indoor installation.

TECHNICAL QUESTIONS

Difference Types of Output Waveforms?

There are three major types of loads: Resistive load (Lamps); SPS load (PC power supply) & Conductive Load (Motors). All the types of load can be used with Pure Sinewave. However, only Resistive and SPS loads can be used with Modified Sinewave.

Will a UPS Switching Times Effect The PC?

Except On-Line UPS, there will be a short transfer time between 2ms to 10ms for the power transformation with OFF-LINE & LINE INTERACTIVE UPS. Normally, when the blackout happens, the power supply of PC could continue the power for 16ms. Hence, most PC will still work functionally with the short transfer time.

UPS Monitoring Management Software?

UPS monitoring management is a software package to improve UPS efficiency. It helps users to control UPS and provide event records for the UPS. It also can automatically save files, shutdown operation systems, and shutdown UPS when power failure happens.

Communication Interface Does UPS have?

Currently, there are five communication interfaces in the market: (a) Contact closure (b) RS-232 (c) AS400 (d) SNMP (e) USB AS400 is the communication port exclusively designed for IBM computers. SNMP is the communication port that controls UPS through Internet without modem. Contact closure and RS-232 are two common communication ports we ever see in the market. The functions of these two communication ports are listed below:

Contact closure

  • Check if Main Power is normal
  • Check if battery voltage is too low
  • Auto save files

 

RS-232

  • Check if Main Power is normal
  • Check if battery voltage is too low
  • Auto save files
  • Check the UPS voltage, current, frequency, and capacity
  • Setting shutdown time

Does the Software Support a USB port?

The software only supports USB port under Windows 98, 2000, XP and 2003.

Use Winpower Software with other UPS?

The WinPower software is only designed for Centralion UPS. Hence, you cannot use it with other UPS.

No Communication between UPS and PC?

  • Make sure you use the right cable
  • Make sure the O/S is under the instruction
  • Make sure your UPS is working functionally
  • Make sure other programmes do not hold the COM port. 
    Sometimes, the anti-virus program will also hold the COM port.