3 PHASE ENERGY ELECTRONIC
METERS
MKB-363-M
INSTRUCTION MANUAL
( M98119801-20 / 04A )
(c)
CIRCUTOR S.A.
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 2
THREE-PHASE THREE-WIRE ACTIVE ENERGY
ELECTRONIC METERS TYPE: MKB-363-M
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 correspond to your order specifications?
(b) Check if any damage was done during the shipment
process.
(c) Verify that 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.
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 3
2.- MAIN CHARACTERISTICS
Three-phase electronic energy meters for low voltage
networks at 230 V a.c. ( code 771 053 ) or 400 V a.c.
( code 771 054 ) , provided with mechanical rotatory display,
which are designed to measure the active energy consumed by
a three-phase three-wire loads Those are suitable for such
installations where a partial energy consumption analysis is
required.
Direct connection for the voltage signal (3 x 230 V a.c. ) or
( 3 x 400 V a.c.) and current through current transformers inside
phases L1 and L3.
Available models
:
- Meter type MKB-363M:
Three-phase three-wire active energy meter single tariff with
build-in current transformers. Display by means of an
electromechanical integrating meter in kW·h.
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 4
Basic Features:
- Active energy computation algorithm uses Aron connection
principle, so phases L1 and L3 include current transformers
and L2 is the voltage reference phase. This allows to use this
active energy meter in any three-phase three-wire system
without neutral or earth currents.
- All energy meters operate over two quadrants: consumed
power.
- Current transformer (only phases L1 and L3):
nominal current : 63 A
maximum current : 90 A
- Electrical accurancy : Class 2
- All energy meters have two pulse outputs: one for the kW·h
consumed and the other with a timer. The energy output
permits a remote transmission of the measurement of the
kW·h consumed to a PLC or an energy meter centralisation
unit like CIRCUTOR LM24. The timer output allows to
compute the average active power for 15’ periods.
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 5
Pulses
:
- Optocoupled outputs (2500 V respect to the electric network)
- Open collector type: 100 ms of duration
max. ratings 35 Vdc/30 mA
both outputs share the same common
Energy output
- Energy ratio : 100 pulses/kW·h
Timer output
- Timer ratio : 4 pulses/h
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- The meter has two LED’s at its frontal cover:
• a green LED of POWER, which indicates that the meter
is connected to the supply
• a red LED for the metrology control and the energy flow
visualisation (it blinks only with consumed power).
Such led blinks each 10 W·h.
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 6
3.- INSTALLATION AND START-UP
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.
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 7
3.1.- Installation
(a) Power supply is taken from own phases L1-L3 :
at 230 V ac ±20% (code 771 053)
or at 400 V ac ( code 771 054)
see MKB-363-M voltage power supply !
(b) Current input of 63 A ac (maximum current 90 A ac)
Build-in current transformer (only phases L1 and L3)
(c) Frequency : 45..65 Hz
(d) Instrument burden : 2 W / 4 VA
(e) Operation conditions:
Designed for inner uses according to EN-61036
- Operating temperature : -10 ºC/ +45 ºC
- Humidity : 25 to 75% R.H. non-condensing
(f) Safety :
Designed to meet protection class II as per EN 61010
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 8
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 circuit must be provided with an automatic switch to
disconnect it from the power supply network and an earth
leakage switch to guarantee its proper operation. The active
phases L1 and L3 will be both connected through a wire with a
2
minimum cross-section of 50 mm
L2 needs a minimum cross-section of 1 mm
, while the reference phase
2
.
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 9
3.2.- Energy meter set-up and calibration
This energy meter needs no calibration nor set-up.
3.3.- Energy meter connection terminal
Terminal
Designation Concept
NR
L1 voltage input
Phase 1
current input
L3 voltage input
Phase 3
current input
L2 voltage input Phase 2
(reference phase)
2 + timer pulse output
(optocoupled)
3 common
4 + energy pulse output
(optocoupled)
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 10
3.4.- Connection drawing of the three-phase energy meter in a
three-phase three-wire low voltage mains
PULSERPOWER
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 11
4.- TECHNICAL CHARACTERISTICS
VOLTAGE CIRCUIT
- Rated voltage 230 V ± 20% or 400 V ± 20%
- Supply voltage
code 771 053 - 230 V ±20% (between phases L1-L3)
code 771 054 - 400 V ±20% (between phases L1-L3)
- Frequency 45 .. 65 Hz
- Consumption 2,0 W
4,0 VA
-----------------------------------------------------------------------------------
CURRENT CIRCUIT
(only phases L1 and L3)
- Rated current 63 A (base current - In)
- Maximum current 90 A
- Start current 0,4% In
-----------------------------------------------------------------------------------
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 12
DISPLAY MODE
-Type Mechanical rotative (without reset)
- Display 6 +1 digits
- Energy unit kW·h
- Resolution 100 W·h
- Maximum count 999999,9 kW·h
-----------------------------------------------------------------------------------
PULSE OUTPUTS:
- Nº outputs 2
- Output type By opto-isolated transistor
(open collector)
- Timer output 4 pulses/h (opto-isolated)
- Energy output 100 pulses/kW·h (opto-isolated)
- Pulse duration 100 ms
- Maximum collector current 30 mA
- Maximum collector-emitter voltage 35 V
- Isolation voltage 2500 V
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-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 13
CONSTRUCTIVE CHARACTERISTICS:
Casing type Modular DIN rail
Protection class IP-20
Cable input max. ∅11 mm
Dimensions (see next fig.)
Weight 300 g
- Temperature inner use -10ºC / +45ºC
refer to §4.3.1 EN-61036
- Humidity (non-condensing) <75%
-----------------------------------------------------------------------------------
GENERAL SPECIFICATIONS
(according to EN-61036 and IEC-1036 standards for threephase energy meters - class 2)
-----------------------------------------------------------------------------------Typical accurancy at maximum current 0,8 %
at rated current (In) 0,8 %
at 5% In 1,4 %
-----------------------------------------------------------------------------------
- STANDARDS: IEC-1036, EN-61036, EN-61010
-----------------------------------------------------------------------------------
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 14
DIMENSIONS:
5.- SAFETY CONSIDERATIONS
All installation specification described in this manual must be
carefully observed by the user.
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. This
instrument is factory-shipped at proper operation condition.
-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 15
6.- MAINTENANCE
The MKB-363M does not require any special maintenance. No
adjustment, maintenance or repairing action should be done
over the instrument open and powered and, should those
actions be essential, high-qualified operators must perform
them.
Before any adjustment, replacement, maintenance or repairing
action is carried out, the instrument must be disconnected from
any power supply source.
When any protection failure is suspected to exist, the
instrument must be immediately put out of service.
7.- TECHNICAL SERVICE
For any inquiry about the instrument performance or
whether any failure happens, contact to CIRCUTOR’s technical
service.
CIRCUTOR S.A. - Aftersales Service
Vial Sant Jordi, s/n
08232 - Viladecavalls - SPAIN
Tel - 34 - 93 745 29 00
Fax - 34 - 93 745 29 14
e-mail : central@circutor.es
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