Follow the warnings described in this manual with the symbols shown below.
DANGER
Warns of a risk, which could result in personal injury or material damage.
ATTENTION
Indicates that special attention should be paid to a speci c point.
If you must handle the unit for its installation, start-up or maintenance, the following
should be taken into consideration:
Incorrect handling or installation of the unit may result in injury to personnel as well as damage
to the unit. In particular, handling with voltages applied may result in electric shock, which may
cause death or serious injury to personnel. Defective installation or maintenance may also
lead to the risk of re.
Read the manual carefully prior to connecting the unit. Follow all installation and maintenance
instructions throughout the unit’s working life. Pay special attention to the installation standards of the National Electrical Code.
Refer to the instruction manual before using the unit
In this manual, if the instructions marked with this symbol are not respected or carried out correctly, it can
result in injury or damage to the unit and /or installations.
CIRCUTOR, SA reserves the right to modify features or the product manual without prior noti cation.
DISCLAIMER
CIRCUTOR, SA reserves the right to make modi cations to the device or the unit speci ca-
tions set out in this instruction manual without prior notice.
CIRCUTOR, SA on its web site, supplies its customers with the latest versions of the device
speci cations and the most updated manuals.
4�7�8� ENERGY COST ����������������������������������������������������������������������������������������������������������������������������������29
4�7�9� CO2 EMISSIONS ��������������������������������������������������������������������������������������������������������������������������������� 29
4�7�10� PARTIAL ENERGY METER DELETION ������������������������������������������������������������������������������������������ 30
4�7�11� EXITING THE SETUP MENU ����������������������������������������������������������������������������������������������������������� 30
4�8�- MANUFACTURER INFORMATION SCREEN ������������������������������������������������������������������������������������������ 31
4�9�-PROGRAMMING �������������������������������������������������������������������������������������������������������������������������������������� 32
4�9�1� VOLTAGE PRIMARY TRANSFORMATION RATIO ��������������������������������������������������������������������������� 32
4�9�2� VOLTAGE SECONDARY TRANSFORMATION RATIO ��������������������������������������������������������������������� 33
4�9�3� CURRENT PRIMARY TRANSFORMATION RATIO��������������������������������������������������������������������������� 34
4�9�4� CURRENT SECONDARY TRANSFORMATION RATIO �������������������������������������������������������������������� 34
4�9�5� EXITING THE SETUP MENU �������������������������������������������������������������������������������������������������������������35
4�10�-IMPULSE OUTPUT ��������������������������������������������������������������������������������������������������������������������������������35
4�11�-INFRARED COMMUNICATIONS PORT ������������������������������������������������������������������������������������������������35
5�- TECHNICAL FEATURES �������������������������������������������������������������������������������������������������������������������������������� 36
6�- MAINTENANCE AND TECHNICAL SERVICE ������������������������������������������������������������������������������������������������ 39
7�- GUARANTEE ���������������������������������������������������������������������������������������������������������������������������������������������������39
8�- CE CERTIFICATE �������������������������������������������������������������������������������������������������������������������������������������������� 40
NB: The images of the units are solely for the purpose of illustration and may differ from the
original unit.
Check the following points upon receiving the unit:
a) The unit meets the specications described in your order.
b) The unit has not suffered any damage during transport.
c) Perform an external visual inspection of the unit prior to switching it on.
d) Check that it has been delivered with the following:
- An installation guide.
If any problem is noticed upon reception, immediately contact the transport
company and/or CIRCUTOR's after-sales service.
2�- PRODUCT DESCRIPTION
The CEM-C30 static three-phase energy meter measures class B active energy (EN50470)
and (optional) class 2 reactive energy (IEC 62053-23), with optional optical communications for
expansion with other modules installed on a DIN rail with a service port.
The current is measured with the transformer.
The unit features:
- 2 buttons that allow you to browse the different screens and program the unit.
- 2 Verication LEDs.
- LCD display, displays all parameters,
- 2 connection seals,
- 2 terminal covers, to cover the top of the terminal box and the xing screws.
6
Instruction Manual
CEM-C30
The CEM-C30 is offered in different versions; Table 2 shows all of the possible options of the
unit.
Table 2: Options of the CEM-C30�
OptionsCEM-C30Code
Connection mode4 wires4
AccuracyClass B Active / Does not measure reactive energy10
Class B Active/ Class 2.0 Reactive energy12
Measurement voltage3x57/100 ... 3x230/400 V
V
3x57/100 V
3x63.5/110 V
3x127/220 V
3x230/400 V
Current measurement Transformer 5(10) AT5
Transformer 5(6) AT6
Frequency50 Hz
60 Hz
Automatic (50/60Hz)C
CommunicationsWithout communications0
Side optical service port1
ExpansionWithout inputs/outputs0
Input/Output (Optocoupler)1
ModelBox for assembly on DIN railE
Number of quadrants2 Quadrants0
4 Quadrants1
Storage in both directions2
Additional featuresNo special features0
BacklightBacklight8
L
M
N
Q
A
B
Example: The code 412VT6A10E10 is an energy meter for assembly on a DIN rail, class
B (active) and class 2 (reactive); with 4-wire connection and 4-quadrant measurement; with
3x127/220 ... 3x230/400 measurement voltages and 5(65) A current measurements at 50Hz; with
service optical communications; with optoisolated impulse output and no additional features.
Instruction Manual
7
CEM-C30
3�- UNIT INSTALLATION
3.1.- PRELIMINARY RECOMMENDATIONS
In order to use the unit safely, it is critical that individuals who handle it follow the
safety measures set out in the standards of the country where it is being used,
use the necessary personal protective equipment, and pay attention to the various warnings indicated in this instruction manual.
The CEM-C30 unit must be installed by authorised and qualied staff.
The power supply plug must be disconnected and measuring systems switched off before handling, altering the connections or replacing the unit. It is dangerous to handle the unit while it is
powered.
Also, it is critical to keep the cables in perfect condition in order to avoid accidents, personal
injury and damage to installations.
The manufacturer of the unit is not responsible for any damage resulting from failure by the
user or installer to observe the warnings and/or recommendations set out in this manual, nor for
damage resulting from the use of non-original products or accessories or those made by other
manufacturers.
If an anomaly or malfunction is detected in the unit, do not use the unit to take any measurements.
Inspect the work area before taking any measurements. Do not take measurements in dangerous areas or where there is a risk of explosion.
Disconnect the unit from the power supply (unit and measuring system power
supply) before maintaining, repairing or handling the unit's connections.
Please contact the after-sales service if you suspect that there is an operational
fault in the unit.
8
Instruction Manual
CEM-C30
3.2.- INSTALLATION
On the side of the unit are all of the indications adjusted to the CEI 62052-11 standard.
The unit is installed on a DIN rail. All connections are located inside the electric panel.
Terminals, opening covers or removing elements can expose parts that are hazardous to the touch while the unit is powered. Do not use the unit until it is fully
installed.
3.3.- UNIT TERMINALS
Table 3:List of CEM-C30 terminals�
Unit terminals
1 : S1, Current input L18 : L3, Voltage input L3
2 : L1, Voltage input L19 : S2, Current output L3
3 : S2, Current output L111 : N, Neutral connection
4 : S1, Current input L213 : Auxiliary Power Supply
5 : L2, Voltage input L214 : Auxiliary Power Supply
6 : S2, Current output L221 : Impulse output (Collector)
7 : S1, Current input L322 : Impulse output (Emitter)
Instruction Manual
Figure 1:Terminals of the CEM-C30�
9
3.4.- CONNECTION DIAGRAM
CEM-C30
Power
Supply
LOAD
S2S1
P1
P2
P1
S2S1
P2
S2S1
P2
P1
Figure 2: Connection diagram, CEM-C30�
L1
L2
L3
N
10
Instruction Manual
CEM-C30
3.5.- CONNECTIONS
The CEM-C30 has terminal covers to cover the top of the terminal box and the xing screws
(Figure 3).
Figure 3: Terminal covers of the CEM-C30�
The xing screws are of the mixed type, allowing the use of PZ2 and at head screwdrivers.
Maximum cable cross-section16 mm2 ( 10 mm2 with end sleeve ) ≤ 1.2 Nm
Screwdrivers headPZ2
Impulse output terminals ( 21, 22 ) and Power supply ( 13, 14)
Maximum cable cross-section1.5 mm2 ( 1.5 mm2 with end sleeve ) ≤ 0.6 Nm
Screwdrivers headat head ( 3 x 0.5 mm)
Once connected, the unit can be protected with two connection seals ( Figure 4).
Instruction Manual
Figure 4: Seal of the CEM-C30�
11
CEM-C30
When the unit is connected to the mains, attach the safety label (Figure 5) to
terminals 13 and 14, in order to prevent the risk of electric shock caused by an
involuntary direct contact.
13 14
13 14
Figure 5: Attaching the safety label�
12
Instruction Manual
CEM-C30
4�- OPERATION
The CEM-C30 is an energy meter capable of measuring:
Imported and exported active energy and reactive energy in the four quadrants.
(according to version).
Active, reactive and apparent power (according to version). RMS voltage and current Power factor, PF
4.1.- BUTTON FUNCTIONS
The CEM-C30 has 2 buttons that allow you to browse the different screens and program the
unit.
The button can be sealed to prevent access to the programming of the most relevant parameters.
To seal the button, insert the seal through the slot found under the button, Figure 6.
Figure 6: Sealing the button�
Button functions on the measuring screens (Table 5):
Table 5: Button functions on measuring screens�
ButtonShort pressLong press (> 2 s)
For the cyclic movement.
Next screen.
Enters reading mode.
Instruction Manual
Enter the programming menu-
13
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