Circutor AMk-ITF Bedienungsanleitung

3 PHASE ENERGY ELECTRONIC METERS

AMk-ITF & AM2k-ITF

(Code 7 71 042 - 7 71 044)

INSTRUCTION MANUAL

( M 981 189 / 00 A )

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 2

3 PHASE ACTIVE & REACTIVE ENERGY ELECTRONIC METERS

1.- BASIC INSTRUCTIONS

1.1.- Delivery spot check

This manual is issued to help all the ENERGY METERS users to install and use

them in order to get the best from them. After receiving the unit please check the

following points:

(a) Does this device corresponds to your order specifications?

(b) Check if any damage was done during the shipment process.

1.2.- Safety considerations

This manual contains information and warnings that must be followed for operating

the ENERGY METER safely and maintaining the instrument in a safe operating

condition.

2.- MAIN CHARACTERISTICS

Three phase electric energy meters for low voltage networks at 400 V a.c. , provided

with mechanical rotary display, that are designed to measure the electric energy

consumed by any three phase circuit ( 3 or 4 wires ). Those are suitable for such

installations where a partial energy consumption analysis is required. Direct

connection for the voltage signal ( 3 x 400 V a.c ) and current signal input through

external .../5A current transformers.

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 3

AVAILABLE MODELS:

- Meter type AMk- ITF (code 7 71 042 ) :

3 phase active energy meter single tariff, input isolated by transformer

( ... 5 A a.c. ). Display by means of an electromecanic integrating meter in kW.h.

- Meter type AM2k- ITF (code 7 71 044 ) :

3 phase active energy meter double tariff, input isolated by transformer ( ... 5 A a.c. )

Display by means of two electromecanic integrating meters in kW.h. The energy will

be accumulated by one or the another meter according to the state of the “tariff

changing” input provided in the own meter.

Common features:

- All energy meters have one pulse outputs. This output permit a remote

transmission of the measurement of the kW.h consumed.

Pulses: open collector type : 100 ms of duration - 24 V d.c. / 30 mA.

Ratio : 1 pulse / 1 kW.h

- Current transformer ratio is user-selected by means of mini-dips in the rear side

of the energy meter. SEE PARAGRAPH 3.1.-

- All energy meters operate over two quadrants: consumed power.

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 4

- The meter has a LEDS at its frontal cover :

•a Led of “POWER” : indicates that the meter is connect to supply.

•a Led ( two for the AM2-ITF model ) for the metrology control and the energy

flow visualisation. Such led blinks each 1 kW. h

Particular features of the double tariff meter ( AM2 - ITF )

- It has an electric input for "tariff change action", that set the energy to be

accumulated by one or another meter. This is an optocoupled input ( 4 kV with

respect to the electric network ).

The first tariff is assigned by voltage lack between those terminals. Second tariff is

selected by applying a 230 Va.c. ±10 voltage between those terminals.

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 5

3.- INSTALLATION AND STARTUP

The manual you hold in your hands contains information and warnings that the user

should respect in order to guarantee a proper operation of all the instrument

functions and keep its safety conditions.

The instrument must not be powered and used until its definitive assembly on the

cabinet’s door.

Whether the instrument is not used as manufacturer’s specifications, the

protection of the instrument can be damaged.

When any protection failure is suspected to exist (for example, it presents external

visible damages), the instrument must be immediately powered off. In this case

contact a qualified service representative.

3.1.- INSTALLATION

Before applying AC power to the, check following points :

(a) Power supply is taken from own phases L2-L3 at 400 V a.c. ±15 %

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 6

(b) Current input of 5 A a.c. ( maximum current of 6 A a.c. ).

(Overload current of 100 A for half a second).

(d) Instrument burden : 0,5 VA

(e) Operation conditions :

- Operating temperature : 0º C / +50º C

- Humidity : 25 to 75 % R.H. noncondensing

(f) Safety : Designed to meet protection class II as per EN 61010.

Mounting:

Instrument is to be mounted onto a DIN rail.

All connections keep inside the cabinet.

Note that with the instrument powered on, the terminals could be dangerous to

touching and cover opening actions or elements removal may allow accessing

dangerous parts. Therefore, the instrument must not be used until this is completely

installed.

The instrument must be connected to a power supply circuit protected with gl type

(IEC 269 ) or M type fuses rated between 0.5 and 2 A. This circuit should be

provided with an automatic switch ( ON / OFF ) or any equivalent element to

disconnect the instrument from the power supply network. The supply and measuring

voltage circuits will be both connected through a wire with a minimum cross-section

of 1 mm2. The line of the current transformer secondary will have a minimum cross-

section of 2,5 mm2.

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 7

3.2- CURRENT TRANSFORMER RATIO

As the rear side of the meter a 22 bridges have been built-in to select the

current transformer ratio really existing in the installation :

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 8

Configuration of the standards current transformer ratios (see table below - 400 V ):

5 / 5

10 /5

25 /5

75 /5

50 /5

100/5

125/5

150/5

200/5

9 8 7 6 5 4 3 2 1

22 <---------------------------------------------------- 1

250/5

300/5

400/5

500/5

600/5

800/5

1000/5

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 9

3.3- ENERGY METER connection terminal

Terminal Nr Designation Concept

1+Pulse output (+) for active energy

2-- Pulse output (--) for active energy

3I1 - Current input 1S2

4 I1+ Current input 1S1

5I2 - Current input 2S2

6 I2+ Current input 2S1

7I3 - Current input 3S2

8I3 + Current input 3S1

9NNeutral N voltage input

10 VL1 Phase 1 voltage input

11 VL2 Phase 2 voltage input

12 VL3 Phase 3 voltage input

13 +AM2- ITF : a.c. voltage input for tariff change

14 -- AM2- ITF : a.c. voltage input for tariff changing

15 al 28 Not used

¡ WARNING ! Check following points:

- Correct polarity? Reverse the current transformer placed at this phase.

- Assure that L1, L2 and L3 phases coincide in voltage and current.

----- AMk-AM2k -400 V- ELECTRONIC METERS -------- M-981 189 --- Page Nº 10

3.4.- Connection drawing of the THREE PHASE ENERGY METER in a three

phase low voltage mains ( with or without neutral wire )

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