Installation Instructions

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Internal Design Concept

A3 ALPHA

Meter with SSD ERT

For many years, Itron ERT

devices have provided an economic

method to collect consumption data from electricity meters. Until

now, however, there has been no similar solution for collecting

billing data from demand metered accounts. An ABB

A3 ALPHA

meter equipped with an under–the–cover Itron Solid

State Demand (SSD) ERT solves this problem.

The SSD ERT is designed to fit under the cover of the A3 ALPHA

meter to simplify installation and reduce costs.

An A3T ALPHA meter (TOU meter) equipped with a SSD ERT

performs automatic scheduled self reads (with demand resets).

The SSD ERT retrieves all billing data directly from the meter

registers and transmits the following information:

• previous billing period consumption value (kWh)

• previous billing period maximum demand value (kW)

• date of last demand reset

Because the SSD ERT is always reporting the data from end of

the previous billing period, you have a full billing cycle to collect

the data. The SSD ERT for the A3 ALPHA functions similarly to

the Itron 41ER-1 ERT and continuously bubbles up these data

elements in three different SCMs (Standard Consumption

Messages).

The data may be collected with any of the following Itron reading

systems:

• Handheld OMR (includes PremierPlus 4, Integrator, &

MVRS)

• Mobile AMR

• Fixed Network

As additional security for the billing data, the A3 ALPHA meter

will store 15 self reads that contain the billing data for the last 15

months.

Meter Status

Included in the SCM messages are multiple error, warning, or

status flags that provide key information about the site conditions

and enable you to detect possible tamper conditions.

• Standard ERT Meter Removal & Inversion Tamper Flags

– Always Included in SCMs

• Examples of up to four additional flags in SCMs (actual

list to be determined):

• End of Calendar Warning

• Internal Meter Error

• Phase Outage Warning

• Low Battery Warning

• Reverse Power Flow Warning

Read Schedules

The A3T ALPHA meter provides an extensive and flexible

calendar permitting the use of both recurring and nonrecurring

dates. This calendar is used to define the read schedules

(demand reset dates) for meters with an SSD ERT. Using ABB’s

Metercat™ software you can create and define a calendar

schedule for each read cycle.

• If the read calendar is completely defined using

“recurring dates” then a perpetual calendar will exist in

the meter and no calendar updates will be necessary.

• If no recurring dates can be defined, the A3 ALPHA can

provide up to 10 years of scheduled non-recurring

monthly resets.

Summary of content (2 pages)

PAGE 1
A3 ALPHA® Meter with SSD ERT® ® For many years, Itron ERT devices have provided an economic method to collect consumption data from electricity meters. Until now, however, there has been no similar solution for collecting billing data from demand metered accounts. An ABB ® A3 ALPHA meter equipped with an under–the–cover Itron Solid State Demand (SSD) ERT solves this problem. The SSD ERT is designed to fit under the cover of the A3 ALPHA meter to simplify installation and reduce costs.
PAGE 2
A3 ALPHA Meter The A3 ALPHA meter is the newest addition to ABB’s line of ALPHA electricity meters. The A3 ALPHA meter builds upon the strengths of existing ALPHA meter designs. Like its predecessors, the A3 ALPHA uses ABB’s patented digital measurement techniques that offer high accuracy, repeatability, and low ownership costs. In support of open architecture standards, the A3 ALPHA meter is the first ABB meter with full ANSI C12.18, C12.19, and C12.21 communication protocol support.