Lumel N43 User manual

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RAIL MOUNTED POWER NETWORK METER
N43
USER’S MANUAL

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CONTENTS
1. APPLICATION.................................................................................. 5
2. METER SET..................................................................................... 6
3. BASIC REQUIREMENTS, OPERATIONAL SAFETY ..................... 7
4. INSTALLATION................................................................................ 8
5. METER DESCRIPTION ................................................................. 10
5.1 Current inputs .................................................................... 10
5.2 Voltage inputs .................................................................... 10
5.3 Connection diagramms ..................................................... 10
6. N43 PROGRAMMING.................................................................... 16
6.1 Front panel.......................................................................... 16
6.2 Power-on messages .......................................................... 18
6.3 Operating modes................................................................ 19
6.4 Measure mode .................................................................... 20
6.5 Parameter settings............................................................. 25
6.5.1 Settings of meter parameters ........................................ 28
6.5.2 Settings of output parameters ....................................... 30

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6.5.3 Settings of alarm parameters......................................... 31
6.5.4 Pages confi guration mode ............................................. 38
7. SOFTWARE UPGRADES.............................................................. 43
8. SERIAL INTERFACES................................................................... 46
8.1 RS-485 interface - list of parameters................................ 46
8.2 USB interface - list of parameters .................................... 47
8.3 Examples of registers’ readout and write ........................ 48
8.4 Map of N43 meter registers ............................................... 54
9. ERROR CODES............................................................................. 76
10. ACCESSORIES .......................................................................... 77
11. TECHNICAL DATA....................................................................... 78
12. ORDERING CODE....................................................................... 85

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1. APPLICATION
The N43 meter,assembled on a rail, is a programmable
digital instrument designed for the measurement of 3-phase,
3 or 4-wire power network parameters in balanced or unbalan-
ced systems. The measured values are displayed on a dedicated
LCD display. The meter enables control and optimization of the
power electronic devices, systems and industrial installations.
The meter can be used for measuring: RMS of voltage and
current, active, reactive and apparent power, active and reactive
energy, power factors, frequency,THD and averaged values
P Demand - „power guard”, S Demand, I Demand /15, 30 or 60
minutes/. Voltages and currents are multiplied by given volta-
ge and current ratios of the measuring transformers /for indirect
connections/. Power and energy indications take into account all
programmed ratio values. The value of each measured value can
be transmitted to the master system via the RS-485 interface.
Three relay outputs signal the overfl ow of the chosen quantity,
and the pulse output can be used for the consumption check
of 3-phase active energy.

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2. METER SET
Complete set of the meter includes:
- N43 Meter............................... 1 pc
- user’s manual......................... 1 pc
- CD .......................................... 1 pc
There is a galvanic separation between following units of the
meter:
- supply,
- voltage and current inputs,
- RS-485,
- USB,
- pulse output OC,
- alarm outputs.

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3. BASIC REQUIREMENTS, OPERATIONAL
SAFETY
In terms of operational safety it meets the requirements
of the EN 61010-1 standard.
Comments concerning safety:
• The meter should be installed and connected only by
a qualifi ed personnel. All relevant safety measures should
be observed during installation.
• Always check the connections before turning the meter on.
• Prior to taking the meter housing off, always turn the supply
off and disconnect the measuring circuits.
• Removal of the meter housing during the warranty period
voids the warranty.
• This meter conforms to all requirements of the electromag-
netic compatibility in the industrial environment.
• The building installation should have a switch or a circuit-
-breaker installed. This switch should be located near
the device, easy accessible by the operator and suitably
marked.

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4. INSTALLATION
The meter is designed for installation in modular distri-
bution boards on a 35 mm rail. The meter housing is made
of plastic.
Housing dimensions: 105 x 110 x 60 mm. There are screw
terminal strips on the outer side of the meter which enable the
connection of external wires with diameter up to 5.3 mm2 /indi-
rect measurement/ and up to 16 mm2/direct measurement/.
The meters should not be installed on the rail in direct contact
with other devices that emit heat (e.g. other N43 meters).
There must be a minimum 5 mm spacing between devices
in order to enable heat transfer from a housing to the environ-
ment. Otherwise, the ambient temperature of a meter working
in direct contact with other devices can exceed the operating
temperature specifi ed in rated operating conditions.

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Fig. 1. Meter dimensions

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5. METER DESCRIPTION
5.1 Current inputs
All current inputs are galvanically isolated (internal current
transformers). The meter is adapted for direct connections
/upto63A/ortoworkwithexternalmeasuringcurrenttransformers
/version 1 A/5 A /. Displayed current values and derivative quan-
tities are automatically converted in relation to the introduced
external current transformer ratio.
5.2 Voltage inputs
Quantities on voltage inputs are automatically converted acc.
to the introduced ratio of the external voltage transformer. Voltage
inputs are specifi ed in the order as either 3 x 57.7/100 V,
3 x 230/400 V or 3 x 290/500 V.

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5.3 Connection diagrams
a) Meter connection diagrams in the 3-phase 4-wire network
Direct measurement in 4-wire network

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Semi-indirect measurement in 4-wire network

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Indirect measurement with the use of 3 current transfor- mers and 2 or 3 voltage transformers in a 4-wire network

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b) Meter connection diagrams in the 3-phase 3-wire network
Semi-indirect measurement in a 3-wire network

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Direct measurement with the use of 2 current transformers and
2 or 3 voltage transformers in a 3-wire network
Fig 2. Meter connection diagrams in a network:
a) 3-phase 4-wire, b) 3-phase 3-wire

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6. N43 PROGRAMMING
6.1 Front panel
Fig. 3. Front panel

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Front panel description:
increase value button
and right displacement active energy export
decrease value button
and left displacement active energy import
confi rm button (ENTER) symbol of energy /
reactive inductive power
USB socket symbol of energy /
reactive capacity power
f1...f6
6 fi eld 3-digit displays for
readout and setting, fi elds f5
and f6 can create one 7-digit
fi eld
symbol of pulse output
*units of the displayed values symbols of alarms activa-
tion
indication of displayed
phase kilo = 103
Mega = 106

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Fig. 4. Message after starting the meter
After switching the supply on, the meter performs a display test
and displays the N43 meter name, build and current software
as well as bootloader version.
where: n43 – meter type, 5A 230V – version
rEu revision
0.10 program version number
b0.00 bootloader version number
6.2 Power-on messages

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Display of maximum,
minimum value
-erasing
Switching
a supply on
or
Change
of displayed
pages
MEASURE mode
Erasing of alarm
latch
3 sec.
3 sec.
Code
Enter a code
or
Selection of Set
parameters
Meter parameters mode
Parameters acc. to Table 2
dEf=YESdefault settings
or
Output parameters mode
Parameters acc. to Table 3
dEf=YESdefault settings
or
Alarm parameters mode
Parameters acc. to Table 4
dEf=YESdefault settings
or
Pages conguration mode
Selection of pages PAGn
dEf=YESdefault settings
or
Change of quantity of
a selected parameter
or
Change of quantity of
a selected parameter
or
Change of quantity of
a selected parameter
or
Selection of parameter
on a page
or
means: or
or or or or
>15 sec.
simultaneous pressure of the buttons
6.3 Operating modes
Fig. 5. N43 meter operating modes

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6.4 MEASURE Mode
In Measure mode the values are displayed according
to the pages that are preset at the factory or confi gured by the
user in Pages Programming PAG.
Changing the page is done by pressing the or .
The sequence of displayed pages is according to a table created
in PAG mode.
Entry into monitoring of maximum and minimum values mode
occurs when pressing at the same time the buttons and
for at least 3 seconds. Erasing maximum and minimum
values is done by pressing the button while monitoring
their value.Alarms are active if they were allocated. Note that the
alarms do not need to be associated with quantities displayed
on the page because the change of a page would result in action
on two-state outputs.
Erasing alarm signalization latch / if it was set in the Alarm para-
meters mode Aln / is done by pressing the buttons .
When reactive power or energy is displayed, this indication is
accompanied by a symbol of the inductive load or capacity
load .
When active energy is displayed, this indication is accompanied
by a symbol of active energy export or active
energy import.