3 PHASE ENERGY ELECTRONIC METERS
AMk-ITF & AM2k-ITF
(Code 7 71 042 - 7 71 044)
INSTRUCTION MANUAL
( M 981 189 / 00 A )
(c)
CIRCUTOR S.A.
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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.
(c) Verify that it includes: One instruction manual .
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.
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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.
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- 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.
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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 %
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