Manual

Chapter 3 Using Front Display

Data Displays

36 EM920 Power Quality and Revenue Meter

Data Displays

The EM920 has 12 multi-page data displays listed in the

following table.

Display

Number

Display Label Display Contents

1 BILL 0 Present (0) billing period data

2 BILL 1 Last (-1) billing period data

3 BILL 2 Second previous (-2) billing period data

4 BILL 3 Third previous (-3) billing period data

5 MAX. DEMAND Engineering maximum demands

6 ENGINEERING Instrumentation data

7 WAVEFORMS Voltage and current waveforms

8 HARMONICS Voltage and current harmonics graph

9 PHASOR DIAGRAM Voltage and current phasors diagram

10 METER SETUP Basic meter setup data

11 DEVICE INFO Device service data

12 DIAGNOSTICS Device diagnostics messages

TEST Mode Data Display

The TEST data display is shown in TEST mode in place of the

billing period data displays. See TEST Mode

in Chapter 2 for

more information on operations in TEST mode.

TEST mode display:

test LED pulse rate in secondary Wh/imp;

test kWh and kvarh energy readings in primary units

with an extended 0.001 kWh resolution.

Extended press SCROLL + SELECT/ENTER can be

used as a shortcut for immediate entering the

password-protected TEST mode setup menu.

Billing Period Data Displays

The EM920 provides four billing data displays: one for the

present billing period and others – for three previous billing

periods. All displays have a layout shown in the following

picture.

Measurement unit

Date and time of the last update

Billing period

Billing register number