ne crawled the Web.
The web site itself may have changed. You can check the current page or check for previous versions at the Internet Archive. Yahoo! is not affiliated with the authors of this page or responsible for its content.
A3 ALPHA
The data you need
Whether the billing data is simple (kWh
energy and maximum demand) or
complex (kWh and kVARh, kW and kVAR
maximum demand, and power factor
coincident with kW maximum demand)
the UMT-C-A3 transponder from
Distribution Control Systems retrieves
billing data directly from the A3 ALPHA
meter registers and transmits it over the
TWACS power line system to the TWACS
Net Server. The A3 ALPHA meter with the
UMT-C-A3 transponder can be configured
to support a variety of options: energy consumption demand time-of-use reactive energy measurement and
demand apparent energy measurement and
demand power factor bidirectional energy instrumentation values (such as per
phase voltage) error and warning messages
Installed under the cover
The UMT-C-A3 can be installed on an
A3 ALPHA demand meter (A3D), a TOU
meter (A3T), an apparent power meter
(A3K), a reactive meter (A3R), and a
bidirectional energy meter (A3Q). Since
the UMT-C-A3 is mounted under the cover
of the A3 ALPHA meter, the installation is
easy. There are no external enclosures to
mount or additional wiring required. Once
the meter is installed and power is
applied, the A3 ALPHA meter begins its
metering process, and the UMT-C-A3 is
powered and connected to the TWACS
communication network.
No guessing required
The A3 ALPHA meter and the UMT-C-A3
feature a wide range voltage input. The
meter and transponder may be used with
any distribution voltage from 120 V to
480 V. The installer has the correct voltage
rating all of the time. The wide voltage
range feature detects and operates
accurately on the voltage applied. There is
also a UMT-C-A3 transponder for voltage
transformer applications when the line
voltage exceeds 480 V.
Two way communications to the
A3 ALPHA meter over existing power lines
is available with the TWACS UMT-C-A3
transponder installed under the meter
cover.
A3 ALPHA
®
meter with UMT-C-A3
www.elster.com Elsters A3 ALPHA meter builds on the strengths of the
ALPHA meter design. The patented digital
measurement techniques offer high accuracy,
repeatability, and low ownership costs.
Elster
208 S Rogers Lane
Raleigh, NC 27610-2144
United States
T
+1 800 338 5251 (US toll free)
T
+1 905 634 4895 (Canada)
F
+1 919 212 4801
support@us.elster.com
www.elster.com
© 2007 by Elster. All rights reserved.
Information contained herein is subject to change
without notice. Product specifications may change.
Contact your Elster representative for the most current
product information. Printed in the United States.
About Elster Group
Elster Group is the worlds leading
manufacturer and supplier of highly
accurate, high quality, integrated
metering and utilization solutions to
the gas, electricity, and water industries.
In addition, through its subsidiary Ipsen
International, it is the leading global
manufacturer of high-level thermo-
chemical treatment equipment.
The group has over 8,500 staff and
operations in 38 countries, focused in
North and South America, Europe, and
Asia. Elsters high quality products and
systems reflect the wealth of knowledge
and experience gained from over 170
years of dedication to measuring energy
and scarce natural resources.
Maximum voltage
Continuous 528 VAC (AnyPhase option: L-L or L-N)
Maximum current
Continuous at Class amperes; temporary (1 second) at 200 % of
meter maximum current
ANSI C37.90.1 Oscillatory
2.5 kV, 2500 strikes
Fast transient
5 kV, 2500 strikes
ANSI C62.41
6 kV at 1.2/50 µs, 10 strikes
IEC 61000-4-4
4 kV, 2.5 kHz repetitive burst for
1 minute
Surge voltage withstand
ANSI C12.1 Insulation
2.5 kV, 60 Hz for 1 minute
Nameplate nominal range
120 V to 480 V
Voltage range
Operating range
96 V to 528 V
Current range
0 to Class amperes
Frequency range
Nominal 50 Hz or 60 Hz ± 5 %
Temperature range
-40 °C to +85 °C inside the meter cover
Humidity range
0 % to 100 % noncondensing
Power supply burden
Less than 4 W
Per phase current burden
0.1 milliohms typical at 25 °C
Per phase voltage burden
0.008 W at 120 V; 0.03 W at 240 V; 0.04 W at 480 V
Accuracy
Meets ANSI C12.20 accuracy for accuracy Class 0.2 %
Forms 1S and 3S
10 mA for Class 20
100 mA for Class 200
160 mA for Class 3201
Starting current
All other forms
5 mA for Class 20
50 mA for Class 200
80 mA for Class 320
Primary time base
Power line frequency (50 Hz or 60 Hz) with selectable crystal
oscillator
Secondary time base
Meets the ANSI limit of 0.02 % using the 32.768 kHz crystal. Initial
performance is expected to be equal to or better than ±55 seconds
per month at room temperature.
Outage carryover capacity
6 hours at 25 °C. Super capacitor rated at 0.1 Farads, 5.5 V.
ANSI standards
C12.1; C12.10; C12.18; C12.19; C12.20; C12.21
Technical specifications
6.95
[177]
Dimensions are in inches [millimeters]. For reference only. Do not use for construction.
6.4
[162]
1.35
[34]
0.75
[19]
6.9
[175]
200709B