Lumel ND10 TYPE Manuale utente

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METER OF NETWORK PARAMETERS

ND10

USER’S MANUAL

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Contents

1. APPLICATION ................................................................... 5

2. METER SET ...................................................................... 6

3. BASIC REQUIREMENTS AND OPERATIONAL SAFETY ..................... 6

4. INSTALLATION .................................................................. 7

5. METER DESCRIPTION ......................................................... 8

5.1 Current inputs .............................................................. 8

5.2 Voltage inputs ............................................................. 8

5.3 Connection diagrams ..................................................... 9

6. ND10 METER PROGRAMMING .............................................. 12

6.1 Front panel ................................................................ 12

6.2 Power-on messages ..................................................... 13

6.3 Parameter display ........................................................ 14

6.4 Operating modes ......................................................... 17

6.5 Parameter settings .......................................................18

6.5.1 Setting of meter parameters ......................................... 19

6.5.2 Setting of output parameters ......................................... 21

6.5.3 Setting of alarm parameters ......................................... 22

6.5.4 Setting date and time .................................................29

7. SOFTWARE UPGRADES ...................................................... 30

8. RS-485 INTERFACE ........................................................... 32

9. ERROR CODES ................................................................. 46

10. TECHNICAL DATA ............................................................. 48

11. ORDERING CODES ............................................................ 52

12. MAINTENANCE AND GUARANTEE ...........................................53

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1. APPLICATION

The ND10 meter is a digital programmable panel

meter destined for the measurement of the 3-phase, 4-wire

power network parameters in balanced and unbalanced

systems. It is also capable of displaying measured quantities

and their simultaneous digital transmission. The meter is also

capable of controlling and optimization of the power electronic

devices, systems, and industrial installations. The meter can be

used for measuring: RMS value of voltage and current; active,

reactive and apparent power; active and reactive energy,

power parameters; frequency, 15-, 30- and 60-minute mean active

power and THD. Additionally, a current in the neutral wire is

calculated from the phase current vectors . Voltage and cur-

rent values are multiplied by given voltage and current ratios

of measuring transformers. Power and energy indications take

into account all programmed ratio values. Any and all measured

values can be sent to the master via the RS-485 interface.

The relay outputs signal alarm when selected parameters

exceed set limits. Impulse output can be used for consump-

tion check of the 3-phase real energy. This meter is also able

to detect and signal incorrect phase sequence.

The meter is powered by the measuring circuit, i.e. from

the voltage output.

There is a galvanic separation between following units of the

meter:

- voltage and current inputs,

- RS-485 output,

- impulse output.

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2. METER SET

Complete set of the meter includes:

- ND10 Meter 1 pcs.

- user’s manual 1 pcs.

- seal 1 pcs.

- panel mounting bracket 4 pcs.

3. BASIC REQUIREMENTS AND

OPERATIONAL SAFETY

In the safety service scope, the transducer meets to

requirements of the EN 61010-1 standard.

Observations Concerning the Operational Safety:

• The meter should be installed and connected only

byaqualiedpersonnel.Allrelevantsafetymeasuresshould

be observed during installation.

• Always check the connections before turning the meter on.

• 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.

• Building power network should include switch or automatic

circuit breaker positioned in the convenient vicinity of the

meter. It should be properly marked and available to opera-

tor at all times.

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4. INSTALLATION

ND10 Meter is adapted to be mounted to the panel

with mounting brackets (see Fig. 1). Meter housing is made

of plastic.

Housing dimensions: 96 x 96 x 77 mm. On the outer side of the

meter there are screw and tab terminal strips that can be used for

connecting external wires with diameter up to 2.5 mm2.

Prior to installation a 92.5+0.6 x 92.5+0.6 mm slot must be made

in the panel. The thickness of the panel material should not

exceed 15 mm. The meter must be placed in the panel from

the front. During installation the powering voltage must be off.

When the panel is inserted in the slot, mount it in place with

provided mounting brackets.

Fig. 1. Meter tting.

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Fig. 2. Meter dimensions.

5. METER DESCRIPTION

5.1. Current inputs

All current inputs are galvanically isolated (internal current trans-

formers). The meter is suited to operate together with external

measuring current transformers. Displayed values of currents as

well as their derivative values are automatically calculated using

set ratio value of the external transformer. Current inputs are

speciedintheorderaseither1Aor5A.

5.2 Voltage inputs

Displayed values of voltages as well as their derivative values

are automatically calculated using set ratio value of the external

transformer.Voltageinputsarespeciedintheorderaseither

3 x 57,7/100 V, 3 x 230/400 V or 3 x 290/500 V.

96 76,7

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5.3 Connection diagrams

OUT

Direct measurement

in a 4-wire network

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OUTimp

Semi-indirect measurement

in a 4-wire network

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