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® 2007




PRO-75 SERIES
DIN rail single phase two wire energy meter




1.1 Safety instruction
1.2 Foreword
1.3 Performance criteria
1.4 Specifications
1.5 Basic errors
1.6 Description

1.7 Dimensions
1.8 Installation
1.9 Operating
1.10 Troubleshooting




1.11 Technical support





User manual
® 2007


1.1 Safety instructions

Information for Your Own Safety
This manual does not contain all of the safety measures for operation of the equipment
(module, device), because special operating conditions, and local code requirements or
regulations may necessitate further measures. However, it does contain information
which must be read for your personal safety and to avoid material damages. This
information is highlighted by a warning triangle and is represented as follows,
depending on the degree of potential danger.


Warning
This means that failure to observe the instruction can result in death, serious injury or
considerable material damage.

Caution
This means hazard of electric shock and failure to take the necessary safety
precautions will result in death, serious injury or considerable material damage.



Qualified personnel
Commissioning and operation of the equipment (module, device) described in this
manual may only be performed by qualified personnel. Qualified personnel in the
sense of the safety information contained in this manual are persons who are
authorized to commission, start up, ground and label devices, systems and circuits
according to safety and Regulatory standards.

Use for the intended purpose
The equipment (device, module) may only be used for the application cases specified in
the catalogue and the user manual and only in connection with devices and
components recommended and approved by DMMetering.

Proper handling
The prerequisites for perfect, reliable operation of the product are proper transport,
proper storage, installation and assembly, as well as proper operation and
maintenance. When operating electrical equipment, certain parts of this equipment
automatically carry dangerous voltages. Improper handling can therefore result in
serious injuries or material damage.

?

Use only isolated tools.
?

Do not connect while circuit is live (hot).
?

Do not connect the meter to a 3 phase - 400VAC network.
?

Place the meter only in dry surroundings.
?

Do not mount the meter in an explosive area or expose the meter to dust, mildew
and insects.
?

Make sure the used wires are suitable for the maximum current of this meter.
?

Make sure the AC wires are connected correctly before activating the
current /voltage to the meter.
?

Do not touch the meter connecting clamps directly with your bare hands, with
metal, blank wire or other material as you will have the chance of an electrical
shock.

® 2007
?

Make sure the protection cover is placed after installation.
?

Installation, maintenance and reparations should only be done by qualified
personnel.
?

Never break the seals and open the front cover as this might influence the
functionality of the meter, and will avoid any warranty.
?

Do not drop, or allow physical impact to the meter as there are high precision
components inside that may break.

Exclusion of liability
We have checked the contents of this publication and every effort has been made to
ensure that the descriptions are as accurate as possible.
However, deviations from the description cannot be completely ruled out, so that no
liability c an be accepted for any errors contained in the information given. The data
in this manual is checked regularly and the necessary corrections are included in
subsequent editions. We are grateful for any improvements that you care to
suggest.

Subject to technical modifications without notice.


Copyright
Copyright DMMetering November 2007 All rights Reserved.
It is prohibited to pass on or copy this document or to use or disclose its contents
without our express permission. Any duplication is a violation of the law and subject
to criminal and civil penalties. All rights reserved, particularly in the event of a
patent award or utility model registration.


Registered trademarks
DMMetering
®
is registered trademark of Inepro Industries Ltd member of the
Inepro Group. The other names appearing in this manual may be trade names the
use of these names by third parties for their own purposes may infringe the rights
of the owners.


1.2 Foreword

Thank you for purchasing the DMMetering PRO-75 series DIN rail single phase two
wire energy meter. The DMMetering PRO-75 series energy meter is the mo st
advanced type electronic kWh meter available at the market. With the DMMetering
product range we have introduced a large scale of energy meters on the market
suitable for 110V AC to 400V AC (50 or 60Hz). Besides the normal energy meters
we also developed our own pre-paid meters with chip card, chip card re-loaders and
a complete PC management control system. For more information on other product
please contact our sales department at sales@dmmetering.com or
info@inepro.com.hk.
Although we produce the DMMetering PRO-75 series meter according to IEC
62053-21 and our quality inspection is very accurate there might always be a
possibility that your product shows a fault or failure for which we do apologize.
Under normal conditions your product should give you years of benefit and pleasure.
In case there is a problem with the energy meter you should contact your dealer
immediately. All energy meters are sealed with a special seal. Once this seal is
broken there is no possibility to claim for warranty. Therefore NEVER open an
energy meter or break the seal of the energy meter. The warranty time is 5 years,
after production date, and only valid for construction faults. ® 2007


1.3 Performance criteria:

Operating humidity = 75%
Storage humidity = 95%
Operating temperature -10°C - +50°C
Storage temperature -30°C - +70°C
International standard
IEC 62053-21
Accuracy class



1
Protection against penetration
of dust and water IP51
Insulating encased meter of
protective class ?


1.4 Specifications:
Meter type PRO-75A(register display)
PRO-75D(LCD display)
Nominal voltage (Un)
230V AC
Operational voltage
161 - 300V AC
Insulation capabilities:
- AC voltage withstand 2KV for 1 minute

- Impulse voltage withstand 6KV 1.2µS waveform
Basic current (Ib)


10A
Maximum rated current (Imax) 100A
Operational current range

0.4% Ib- Imax

Over current withstand

30Imax for 0.01s


Operational frequency range
50Hz ±10%


Internal power consumption

=2W / 10VA


Test output flash rate (Red LED)

1600imp/kWh
Pulse output rate (pins 5 & 6) 1600imp/kWh
reverse indicator (Green LED) Current reverse
Consumption indicator (Red LED) Flashing at load running


1.5 Basic errors:

0.05Ib

Cosf = 1
±1.5%
0.1Ib


Cosf = 0.5L

±1.5%





Cosf = 0.8C

±1.5%
0.1Ib - Imax Cosf = 1

±1.0%
0.2Ib - Imax Cosf = 0.5L

±1.0%





Cosf = 0.8C

±1.0%


1.6 Description

A



Front panel
B



Cover
C



Base
D




Security hasp


® 2007

Material

Front panel


PC inflammable retarding
Cover
ABS inflammable retarding
Base
ABS inflammable retarding






1.7 Dimensions

Height



130 mm
Width



76 mm
Depth



65 mm
Max diameter cable
11.5 mm
Weight



0.2 Kg (net)

1.8 Installation







CAUTION
?

Turn off and lock out all power supplying the energy meter and the
equipment to which it is installed before working on it.
?

Always use a properly rated voltage sensing device to confirm that the
power is down.


A
B
C
D ® 2007












-
We recommend that the connecting wire which is used to connect the meter to
the outside circuit should be sized according to local codes and regulations for
the ampacity of the circuit breaker or over current device used in the circuit.
-
An external switch or a circuit-breaker should be installed on the inlet wire,
which will be used as a disconnection device for the meter. And there it is
recommended that the switch or circuit-breaker is near the meter so that it is
more convenience for the operator. The switch or circuit-breaker should comply
with the specifications of the building electrical design and all local regulations.
-
An external fuse or thermal cut-off which will be used as an over-current
protection device for the meter must be installed on the supply side wire, and it
is recomme nded that the over-current protection device is near the meter so
that it is more conveni