3550 查看數據表（PDF） - ASM GmbH

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3550

BATTERY HiTESTER

ASM GmbH 

1

3550, 3551 BATTERY HiTESTER

Conveniently check the battery in an Uninterruptible

Power Supply (UPS) without shutting down

With repeated charging and discharging of a

storage battery over a long interval, the battery

performance gradually deteriorates, and the

internal resistance increases until charging is no

longer possible. Faults may also be caused by

internal short-circuits, reducing the battery

voltage, making the battery over-heat, or in the

case of a short-circuit caused by corrosion,

possibly even leading to a fire.

The 3550/3551 BATTERY HiTESTER takes on-

the-spot measurements of the internal resistance

and voltage of alkali and lead-acid batteries,

principally for UPS and similar applications. It then

determines the state of the battery immediately,

without needing to shut off the battery.

3550 BATTERY HiTESTER

Model 3551:

Generally speaking, the higher the capacity of a battery, the lower the internal resistance, and in the case

of high-capacity batteries the check decision requires accurate measurement of an extremely small internal

support for high- resistance of a few tens or hundreds of microohms. The 3551 has a resolution of 1µΩ, an order of

capacity batteries* magnitude finer than the 3550, and with the special-purpose 9465 PIN TYPE LEADS, provides decisions

for high-capacity batteries.

*The term "high-capacity battery" is used here to mean one with a capacity of at least 500 Ah, and

internal resistance not exceeding 0.5µΩ.

Simultaneous

measurement of

The operational life of a battery varies greatly, depending on the pattern of use (frequency of power

failures, continuous operating time, and so forth) and also on the environmental conditions. It is therefore

necessary to measure the internal resistance and voltage of the battery, and also the temperature of the

resistance, voltage, battery or of the environment, in order to assess the state of the battery.

* Temperature measurement with the 3551 requires the optional 9460 CLIP TYPE LEADS WITH

and temperature* TEMPERATURE SENSOR.

Three-rank rating of

battery state: Pass,

Warning, or Fail

[NOTE]

The Pass/Warning/Fail assessment of a battery's state is based on a six-way combination of comparisons*

against upper and lower resistance limits and a voltage threshold. This result is then indicated by LEDs

and a beeper.

Lower resistance limit w

w Upper resistance limit

Resistance

Voltage

Low

In range

High

* The comparison threshold values

depend on the battery manufacturer,

type, and capacity, and these must be

established by the user.

Voltage

threshold value

Low

High

Warning (amber) Warning (amber)

Fail (red)

Pass (green)

Warning (amber)

Fail (red)

The LED indicator colors are shown in parentheses.

Safely measure

without shutting

down the battery

For a UPS in a hospital or computing facility, where a break in the supply cannot be tolerated, battery

maintenance must be carried out with the battery live. Models 3550 and 3551 are designed to be able to

take measurements even while the battery is being charged.

* The tester includes circuitry to attenuate noise at frequencies other than the measurement frequency

(1 kHz). If, however, noise is present at close to the measurement frequency, a stable reading may not

be obtained.

Memory function

and printed output

A UPS consists of a number of cells connected either in series or parallel, and data for each of these cells

must be obtained rapidly, and recorded. The BATTERY HiTESTERs have a built-in internal memory

function which retains the measurement values and the decision result: Model 3550 holds 260 sets of

data, and Model 3551 holds 250 sets. These can be recalled on the tester itself, or can be printed together

with statistics, using the optional 9203 DIGITAL PRINTER.

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