Voltex M380 User manual

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
Table of contents
1. Introduction.............…...........................................................................2
1.1 General ................................................................................................ 2
2. Product information......................................................................3
2.1 Meter parts.......................................................................................... 3
2.2 Technical Data ................................................................................... 4
3. Safety regulations ......................................................................... 7
4. Installation......................................................................................8
4.1 Protection requirements.....................................................................8
4.2 Mounting the meter............................................................................8
4.3 Connecting and commissioning the meter ....................................11
5. Functions ........................................................................................ 15
5.1. Reading and Control of the meter ................................................ 15
5.2. Operating LCD Display .....................................................................15
5.2.1. Bottom line information ................................................................. 15
5.2.2. Top line information........................................................................16
5.2.2.1. Display screens when power is ON............................................16
5.2.2.2. Auto-scrolling display screens ....................................................17
5.3. Test LED indicator ..............................................................................18
6. Maintenance instructions..........................................................19
7. Disconnecting meter..................................................................21

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
1. Introduction
1.1. General
M380, M320CT - Three-phase, low voltage 3x230(400)V, electronic meters enabling advanced
communicating capability for monitoring and managing the power network.
These meters measure active and reactive electric energy consumption and transmit data over
the power network, using two way Power Line Communication (PLC) to a central unit –
concentrator –from which data is transmitted to the billing center by cellular communication –
GSM/GPRS.
M380 –Direct connection meter.
M320CT - CT (current transformers) connection meter.
Fig. 1.1 Meter view

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
2. Product information
2. 1. Meter parts
Fig. 2.1 Meter front/side view
1
Hook
6
Terminal cover's screw and
sealing point
2
Upper cover
7
Terminalcover
3
LCD display(protected
bytransparent window)
8
IrDA port
4
Label
9
Red LED
5
Sealing points
10
Lower part of case

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
2.2. Technical Data
General
Nominal Voltage (Un)
3 x 230V AC
Supply Voltage range
80% - 115% Un
Nominal Frequency (fn)
50Hz
Consumption at Un
5 W –4.1 Var (Capacitive)
System connections
3 phase 4 wire
Measurement
Class Index
Active energy acc. to IEC62053-21
Class 2
Reactive energy acc. to IEC62053-23
Class 2
M380
Basic Current (Ib)
3x20A
Maximum continuous current (Imax)
3x80A
M320CT
Basic Current (Ib)
3x5A
Maximum continuous current (Imax)
3x20A
Environmental
Temperature range
operation
-10ºC to 55ºC
storage
-25ºC to 70ºC
Protection rating
IP51
Insulation Strength
Protective Class acc. to IEC62052-11
Class I I
Display
Type
LCD
Format
16 Characters x 2 Lines
Character size
9.55mm x 5.2mm
LED Indicator
Flash rate
200 imp/kWh
Communication Interfaces
PLC Frequency range
A-band 60-90 kHz
PLC Method
Spread FSK
Optical Comm. port IrDA baud rate
9600bps

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
Weight and Dimensions/ Case protection
Weight
1300 g
Width
145 mm
Height
228 mm
Depth
74 mm
Enclosure protection acc. IEC60529
IP51
Phase connections M380
Connection system type
Screw type terminals
Diameter
8.6mm
Maximum conductor cross-section
25 mm²
Minimum conductor cross-section
6 mm²
Screw dimension
M6x12
Screw head
Slotted,/comb. drive
Max. screw head diameter
< 8 mm
Tightening torque
<2.5 Nm
Phase connections M320CT
Current connections
Connection system type
Screw type terminals
Diameter
6 mm
Maximum conductor cross-section
6 mm²
Minimum conductor cross-section
4 mm²
Screw dimension
M4x8
Screw head
Slotted,/comb. drive
Max. screw head diameter
< 6.8 mm
Tightening torque
<1.5 Nm
Voltage inputs
Connection system type
Screw type terminals
Diameter
4.5 mm
Maximum conductor cross-section
1.5 mm²

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
Fig.2.2 Meter Dimensions

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
3. Safety regulations
The following safety regulations must be observed at all times:
● When installing or opening the meter the connections must be free of voltage.
Touching parts under voltage is life threatening. The relevant preliminary fuses should therefore
be removed and kept in a safe place until the work is completed, so that other persons cannot
replace them unnoticed.
● Local safety regulations must be observed.
● Installation of the meters must be performed by qualified industrial electricians only.
● Meters which have fallen must not be installed, even if no damage is apparent, but must be
returned for testing to the service or the manufacturer. Internal damage can result in functional
disorders or short circuits.
● The meters must on no account be cleaned with water.

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
4. Installation
Installation and commissioning must be performed by a qualified
industrial electricians only!
The persons installing the meter must be familiar with and observe the normal local safety regulations
and safety regulations specified in this “Installation Manual”.
The installer is responsible that the electricity meter is correctly and safely installed.
4.1. Protection requirements
Circuit protection for electricity meter must be installed: fuse or circuit breaker with maximum switching
current less than maximal continuous current of the meter according to the technical specification.
4.2. Mounting the meter
WARNING! The connecting wires at the place of installation must not be live when fitting the meter.
Touching live parts is dangerous to life. The corresponding preliminary fuses should therefore be
removed and kept in a safe place until work is completed, so that they cannot be replaced by anyone
unnoticed.
The meter should be mounted on the meter board or similar devices provided for this purpose. The
meter has one hook on the top backside of the meter's lower case and two mounting holes in the
terminal block, see Fig 4.1.
1. Determine the correct meter position for mounting the meter.
2. Set the meter hook in desired position and fix it by a screw .The hook on the meter's backside
can be moved up and down as shown on Fig 4.1.
3. Unscrew the meter terminal cover and remove it.
4. Shut off power to line. Make sure voltage is zero. Check with a phase tester or universal measuring
instrument whether the connecting wires are live. If so, remove the corresponding preliminary fuses and
keep them in a safe place until installation is completed, so that they cannot be replaced by anyone
unnoticed.
5. Make the three holes for fixing screws on the surface where the meter has to be installed. The
mounting dimensions are according with Fig 4.2.
6. Fit the meter with the three fixing screws on the mounting board :
1. First support the meter on the upper screw by the hook .
2. by using two screws, mount the meter through the bottom two holes in the meter's
terminal block on to the surface .

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
Fig.4.1 Meter Backside view

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M380, M380R, M320CT –Three Phase Meters Installation Manual
M380, M320CT-Three Phase Meters Installation Manual
Fig.4.2. Drilling plan