UPS Glossary, Uninterruptible Power Supply Definition

A

AC Ripple

AC Ripple refers to an unwelcome AC component that can be superimposed on the DC output from a UPS rectifier/charger circuit. AC ripple should be prevented from reaching the battery because it causes internal heating and deterioration of the battery poles.

Please visit our website for more information on this topic.

AMF

AMF automatic Mains Failure Detection is a useful function for standby power generators. A generator fitted with AMF can detect and respond to a mains failure by automatically starting up and becoming a &#;mains replacement&#; for the UPS.

Automatic Battery Test

Automatic Battery Test is a scheduled test designed to identify any battery weakness before it can cause an online battery failure and system crash. It comprises short simulated and actual discharges of the battery and alarm generation if the battery voltage falls below a preset level during the test.

Autonomy

Autonomy also known as back up or discharge time, battery autonomy is a measure of the time for which the battery will support the critical load during a mains failure. Autonomy is a function of battery charge state, capacity and load size.

Availability (A)

Availability (A) is a useful measure of downtime per year for systems subject to failure and repair. It is defined as the probability of a system being operational at any given time during its working life;

Chengyue supply professional and honest service.

• A = MTBF/(MTBF + MTTR)
• Where MTBF = Mean Time Between Failures and MTTR = Mean Time To Repair

The Semi-Annual or Quarterly Maintenance Routine consists of the following:

1. Perform Midtronics internal conductance readings as well as interjar / inter-tier impedance readings on all batteries.
2. Measure and record individual jar and string float voltages and AC ripple current.
3. Clean all cells and racks, provide corrosion control where required.
4. Record ambient temperature of battery room.
5. Record Date Code, Battery Post Type, interconnect cable size, hardware/connection type
6. Individual cell inspection; seals, posts, jar integrity.
7. Individually High Rate/Short Term load test all jars to verify integrity and recovery curve. (when required)
8. Furnish completed data sheets and report any problems found during the inspection.

Note 1: The intervals of service visits and intervals of load testing can be adjusted based on the following:
1. Battery Type
2. Age
3. Customer&#;s personnel requirements

Note 2: Batteries and replacement labor are specifically excluded from this agreement. This program provides for inspections &#;only&#;.

If you are looking for more details, kindly visit uninterruptible power supply manufacturer.