SEP LEM012SD User manual

1SEP LEMO12SD / LEM012SS 2015
LEM012SD DIGITAL DISPLAY KWH METER
LEM012SS ANALOG DISPLAY KWH METER
230V | 5-40A | 50Hz | class 1
DIN rail single phase two wire energy meter
1.1 Safety instruction
1.2 Foreword
1.3 Performance criteria
1.4 Specifications
1.5 Intrinsic errors
1.6 Description
1.7 Dimensions
1.8 Installation
1.9 Operating
1.10 Troubleshooting
1.11 Technical support
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

2SEP LEMO12SD / LEM012SS 2015
1.1 Safety instructions
Information for Your Own Safety
This manual does not contain all of the safety measures for operation of the
LEM012SD/LEM012SS, because special operating conditions, local code requirements
or local, national or international regulations may necessary to take further measures.
It does contain information which must be adhered to in the interests of your own
personal safety and to avoid material damages.
Warning
Means that failure to observe the instruction can result in death, serious injury or
considerable material damage.
Caution
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 single phase energy meter may only be used for the application cases specified in
the catalog and the user manual and only in connection with devices and components
recommended and approved by SEP Europe.
Proper handling
The prerequisites for 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 injury 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 exposed 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 electric shock
and a possible chance for health damage.
Make sure the protection cover is placed after installation.
Installation, maintenance and repair should only be done by qualified personnel.
Never break the seals and open the front cover as this might influence the

3SEP LEMO12SD / LEM012SS 2015
functionality of the meter, and will be avoid any warranty.
Do not drop, or allow physical impact to the meter as there are high precision
components inside that may break or render the meter measure accurately.
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 can be accepted for any errors or omissions contained in the information
given. The data in this manual are checked regularly and the necessary corrections
are included in subsequent editions. We are grateful for any improvements that you
care to suggest.
Copyright
Copyright (c) 2015 SEP EUROPE All rights Reserved.
It is prohibited to pass on or copy this document or to use or disclose its content
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
SEP EUROPE is registered trademark of Schotman Elektro BV.
1.2 Foreword
Thank you for purchasing the SEP LEM012SD or LEM012SS DIN rail single phase
two wire energy meter. The SEP LEM012SD and the LEM012SS energy meter is an
advanced type electronic energy meter. With the SEP product range we have
introduced a large scale of energy meters on the market suitable for 110VAC to
400VAC (50 or 60Hz)
Although we produce the SEP LEM012SD and the LEM012SS meter according to IEC
62053-21 and our accurate quality inspection 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 12 months, after purchase, and
only valid for construction faults.

4SEP LEMO12SD / LEM012SS 2015
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 Ⅱ
1.4 Specifications:
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) 5 A
Maximum rated current (Imax) 32 A
Operational current range 0.25A - 32A
Over current withstand 960A for 0.01s
Operational frequency range 50Hz ±10%
Internal power consumption ≤2W / 10VA
Test output flash rate (Red LED) 2000 pulses per kWh (0.5Wh/imp)
Pulse output rate (pins 20 & 21) 2000 pulses per kWh (0.5Wh/imp)
Pulse supply current Ui max=27V Ii max 27mA
Power supply indicator (Green LED) Meter is connected and working OK
Consumption indicator (Red LED) Flashing at load running
Data display mode 7+1 digits for LCD display
(for the LEM012SS 5 +1digits for mechanical
display 5 integer 1 decimal.
Data save The data can be stored more than 20 years
when power cut.
Wire connection Up to 10mm2 stranded copper wire
1.5 Intrinsic errors:
0.05Ib Cosφ = 1 ±1.5%
0.1Ib Cosφ = 0.5L ±1.5%
Cosφ = 0.8C ±1.5%
0.1Ib - Imax Cosφ = 1 ±1.0%
0.2Ib - Imax Cosφ = 0.5L ±1.0%
Cosφ = 0.8C ±1.0%
1.Ib - Imax Cosφ = 1 ≤ 1%

5SEP LEMO12SD / LEM012SS 2015
1.6Description
A Register (LCD display)
B Meter cover
C Terminal block
D Protection cover
E Security hasp
F Indicator Light
Material
Window of register PC inflammable retarding
Case PA inflammable retarding
Terminal block PA inflammable retarding
Protection cover PA inflammable retarding
EN62053-21 Ui max = 27V / li max = 27mA
R
DMMetering
Single phase 32A kWh meter
R
L
= 0.5 Wh/imp
R
A
= 0.5 Wh/imp (ti=80ms) SO
2 1
6 320
S O
+ -
1 4
L N
ADM1D V1.0
1
R
A
= 0 .5 Wh /i m p
R
L
= 0. 5 W h/ im p
kWh
230 V,5(32)A,50H z
A
E
D
B
D
EC
B
C
1.7Dimensions
Height 116.mm
Width 17.5 mm
Depth 59.mm
Weight 0.12 Kg (net)
F

6SEP LEMO12SD / LEM012SS 2015
E N 6 2 05 3 -21 Ui max = 27V / li max = 27mA
R
DMMetering
Si ngl e p hase 32A kW h me ter R
L
= 0.5 W h/im p
R
A
= 0.5 W h/im p (ti=80ms) SO
2 1
6 32 0
S O
+ -
1 4
L N
A DM1 D V1. 0
1
R
A
= 0 . 5 W h/im p
R
L
= 0 .5 Wh / im p
kWh
230V,5(32)A,50Hz
1.8Installation
- We recommend that the connecting wire which is used to connect the meter to
outside circuit should be sized according to local codes and regulations for the
ampacity of the circuit breaker or overcurrent 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 it is
recommended that the switch or circuit-breaker is near the meter. 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 used as a overcurrent protection
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 power is
off.
WARNING
Installation should be performed by qualified personnel familiar with
applicable codes and regulations.
Use isolated tools to install the meter.
Fuse or thermal cut-off or single-pole circuit breaker can’t be fitted on the
supply line and not the neutral line.
Case is sealed, failure to observe this instruction can result in damage for
meter.
No warranty if case is opened or removed seal or damaged.

7SEP LEMO12SD / LEM012SS 2015
device for the meter must be installed on the supply side, and it is
recommended that the overcurrent protection device is near the meter so that it
is convenience for the operator. The overcurrent protection device should
comply with the specifications of the building electrical design and all local
regulations.
- This meter can be installed indoor directly, or in a waterproof meter-box outdoor,
in compliance with the local codes and regulations.
- The meter has to be installed in a good ventilated and dry place.
- The meter has to be installed in a protection box in dangerous or dusty
environment.
- The meter can be installed and used after being tested in accordance with the
specifications of the building.
- The meter can be installed on a 35mm DIN rail.
- The best way to install in an available height so that it is easy to read.
- When the meter is installed in an area with frequent surges due to e.q.
thunderstorms, welding machines, inverters etc, protect the meter with
apllicable Surge Protection Devices.
- After finishing installation, the meter must be sealed to prevent tampering.
- Connection of the wires should be done in accordance with the underneath
connection diagram.
1
4
L
N
3
6
20
SO
21
+
-
1 Inlet phase line
4 Inlet neutral line
3 Outgoing phase line
6 Outgoing neutral line
20 and 21 Pulse output contact
1.9 Operating
Working indication
There is a white LED which has two colors (green and red) while burning in the front
panel of LEM012SD and LEM012SS. When the meter works normally, this LED will
display green. When meter is going wrong or no power supply, the LED will turn off.
Consumption indication
There is a white LED which has two colors (green and red) while burning in the front
panel of LEM012SD or LEM012SS. When consumption happens, the LED will flash and
display red. The more quickly LED flash, the more consumption there is. For this LED,
the flash rate is 2000 impulses per kWh (0.5Wh/imp).
Reading the meter
LEM012SD / LEM012SS is equipped with a white backlight LCD display. During the
normal working hours, the meter will be burning this white backlight all the time. The
display will show the following energy data and indication message.

8SEP LEMO12SD / LEM012SS 2015
a) Current total energy
When the meter is in normal working, it will display only 7 +1 energy data with. The
unit is kWh. These data cannot be reset to zero by the user. Example: Total energy
is 4574899.1 kWh.
b) Indication for reverse use
When the meter is wrong connected with the incoming line and the outgoing line
reversed. Every 3 seconds the LCD display will show HELP 1.
1
RA= 0.5 Wh/imp
RL= 0.5 Wh/imp
kWh
230V,5(32)A,50Hz
1
RA= 0.5 Wh/imp
RL= 0.5 Wh/imp
kWh
230V,5(32)A,50Hz
c) Meter version
When the meter is switched on (the power), it will display the meter version for 3
seconds.
1
R
A
= 0.5 Wh/imp
R
L
= 0.5 Wh/imp
kWh
230V,5(32)A,50Hz
Pulse output
The LED on the front of the meter is pulsing 2000 p kWh (0,5 wh/1mp).The LEM012SD
and the LEM012SS DIN rail energy meter is equipped with an pulse output which is fully
separated from the inside circuit. The generates pulses in proportion to the measured

9SEP LEMO12SD / LEM012SS 2015
energy for remote reading purposes and accuracy testing. The pulse output is a polarity
dependant, passive transistor output requiring an external voltage source for correct
operation. For this external voltage source, the voltage (Ui) should is 5-27V DC, and
the maximum input current (Iimax) is 27mA DC. To connect the impulse output,
connect 5-27V DC to connector 20 (anode), and the signal wire (S) to connector 21
(cathode). The meter pulses 2000 per kWh (0.5Wh/imp).
1.10 Troubleshooting
CAUTION
During repair and maintenance, 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 electricity shock and a possible chance for
health damage.
Turn off and lock out all power supplying the energy meter and the
equipment to which it is installed before opening the protection cover to
prevent the hazard of electric shock.
WARNING
Maintenance or repair should be performed by qualified personnel familiar
with applicable codes and regulations.
Use insulated tools to maintain or repair the meter.
Make sure the protection cover is in place after maintenance or repair.
Case is sealed, failure to observe this instruction can result in damage for
meter.
Problem
Check
Solution
No light for the
Power supply
indicator.
Is AC power supply
connected to the
meter ?
Is the 1 and 4
connecting correct ?
Maybe there is a
fault in the inside
circuit.
Check switch or circuit-breaker
and fuse or thermal cut-off.
Reinstall terminal screws on the 1
and 4. Make sure all screws are
fixed. Than there should be a
230V 50Hz AC voltage between
the terminal screws on the 1 and
4 when power supply is input.
Contact a qualified technician.
When necessary replace the
meter.

10 SEP LEMO12SD / LEM012SS 2015
Continue
Problem
Check
Solution
No light for the
consumption
indicator.
Is the load running?
Is the operating
power too low?
Maybe there is a
fault in the inside
circuit.
Only when load is running, this
LED will flash.
If the operating power is too low,
the spacing interval of flashing
will be prolonged so that people is
under the delusion that LED isn’t
burning.
Please connect with technical
support to replace this meter.
The register can’t
run.
Is there a power
supply inside the
meter?
Is the operating
power too low?
Maybe there is a
fault in the inside
circuit.
Check that the power supply
indicator is burning.
If the operating power is too low,
the spacing interval of running will
be prolonged so that people is
under the delusion that register
can’t run.
Contact a qualified technician.
When necessary replace the
meter
LCD backlight can’t
lit.
Is there power
supplied to the
meter?
Maybe there is a
fault in the inside
circuit.
Check that the power supply
indicator is burning.
Please connect with technical
support to replace this meter.
No pulse output.
Is DC power supply
connected to the
meter?
Is the connecting
correct?
Maybe there is a
fault in the inside
circuit.
Check the external voltage source
(Ui) is 5-27V DC.
Check correct connecting:
connect 5-27V DC to connector 20
(anode), and the signal wire (S)
to connector 21 (cathode).
Contact a qualified technician.
When necessary replace the
meter.
Pulse output rate
wrong.
Maybe there is a
fault in the inside
circuit.
Please connect with technical
support to replace this meter.

11 SEP LEMO12SD / LEM012SS 2015
1.11 Technical support
For questions about our products please contact:
-SEP dealer in your in your region
-Your local SEP distributor
-Email: [e-mail]
www.sep-europe.nl
S.E.P. Europe
Weverstraat 4
9403 VJ Assen
Netherlands
Tel: [phone]