Chapter 3 Installation Testing; Installation Check And Startup - Emerson NetSure 211 C45 User Manual

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Table Of Contents

Table of Contents

This chapter introduces procedures of installation testing. The corresponding safety rules shall be adhered to in the

test.

3.1 Installation Check And Startup

Before the test, inform the chief manufacturer representative. Only the trained electrical engineer shall conduct the

system testing. Remove metal objects that may cause shortcircuit, such as rings, watches, and so on.

During operation, watch out for hazardous voltage, and avoid personnel injury and property damage. Before the test,

ground the equipment properly. Installation check must be done before testing, then the batteries can be charged for

the first time.

Make sure that the AC input MCB and load MCBs are switched off. Make sure that all the devices are properly

installed.

Check the system according to the following items listed below.

Installation check

Verify all the MCBs, fuses and cables

Verify the system grounding, input and output cable connection

Verify the battery cell number, connection, and battery string polarities

Make sure all the cable connections are firm and reliable

Make sure all the communication cables and alarm cables are connected to the monitoring module. Check

that the temperature sensor, if any, has been installed correctly

Startup preparations

Make sure that all the MCB are switched off and all the fuses are removed

Measure the AC input voltage. Make sure the input voltage is within the allowable range

Check that the battery string circuit is not closed

Connect the disconnected batteries to the battery string circuit

Measure with a voltmeter across the connection points of each battery and make sure that the polarity is

right. For a lead-acid battery with 24 cells, the voltmeter should read 2.0V/cell ~ 2.1V/cell or 48V/battery ~

51V/battery. If the voltage of certain cell is lower than 2.0V, that cell must be replaced

Check with an ohmmeter that there is no short circuit between the positive & negative distribution busbars,

or between the positive & negative battery poles

(Note: Pull out all modules before the check and restore them after the check)

Startup

Switch on the system AC input MCB, and the monitoring module should display the correct voltage and

current values

The green indicator on the rectifier should turn will be on and the fan should will start running. After a

certain delay, the monitoring module should show that the power supply voltage is 53.5V

Check the system voltage and busbar polarity with a voltmeter. The voltage difference between the

measured value and displayed value should be less than ± 0.3V

Start and stop each rectifier by inserting and unplugging the rectifiers. Check their output voltages