Circutor MK-30-LCD, MK-60-LCD - Energy Meter Quick Start Guide

MAIN FEATURES

Electronics-based, Class 1 rated, electrical energy meter, with LCD display, for its use in L.V. single-phase networks, These energy meters are appropriate for any application that requires the monitoring of partial energy consumptions.
Additional relay output for pulse output usage.
Besides the energy value, the voltage, current and power measurements of the mains will be also displayed in the screen.
According to the type, a RS-485 communication system is implemented (for data retrieval from a PC). In this case, the relay output can be set to work as a pulse or alarm output.

MK-LCD types

Installation

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.
Whether the instrument is not used as manufacturer's specifications, the protection of the instrument can be damaged.
Mounting :
The instrument is to be mounted onto a DIN rail. All wiring connections keep inside the switchboard cabinet.
Note that with the instrument powered on, the terminals, cover opening actions or elements removal may allow accessing dangerous parts. The instrument must not be used until this is completely installed.
The monitored line should be provided with a circuit breaker or any equivalent element (fuses) to disconnect the instrument from the power supply network. This switching device must be placed near the instrument and will be easily accessible.
The instrument is directly power supplied from the cables crossing the MK-LCD. The power supply and voltage-current measuring circuit must be wired with cables of appropriate cross-section according to the current flowing through the MK-LCD.

Note: If, once the installation has been completed, the power and energy readout blinks, it means that the meter is detecting the energy as a generated energy.

Operation mode

The MK-LCD has a total value counter and a partial value counter (a "P" letter goes before this latest counter in display).
A push-button enables the user to perform the following actions:

• Display of maximum values: Pressing the button for less than 3 seconds.
• Reset the partial energy counter to zero: Pressing the button for more than 3 seconds.

MAINTENANCE

Before any adjustment, replacement, maintenance or repairing operation 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 our of service. The instrument's design allow a quick replacement in case of any failure. In this case contact a qualified service representative.

Specifications

Power supply/measuring circuit:

• Single-phase: 110 V - 230 V a.c.
• Tolerance: -15% / +20 %
• Frequency: 50 - 60 Hz
• Burden: 3 VA
• Working temperature: 0 to 50 º C
• Rated current (Ib): According to type
• Permanent overload: 2 Ib
• Start current: 0,1% Ib

Accuracy class: Class 1
Mechanical features:

• Case type: Modular self-extinguishing plastic
• Current cable entrance: Maximum Ø 11 mm
• Voltage connection: Metallic terminal with "pozidriv" No.2 / flat mixed screw.
• Pulse output: Metallic terminal with flat headed screw.
• Mounting: Symmetric DIN 46277 (EN50022) rail
• Protection:
  Frontal cover: IP 51
  Terminals: IP 20
• Dimensions: 70 x 80 x 75 mm (4-module relay – DIN 43 880)
• Weight: 0.200 kg.

Display:

• Type: LCD (6 digits) without reset
• Energy unit: kW·h
• Maximum count: 999999 kW·h

Output relay characteristics:

• Type: opto-isolated transistor (open collector)
• Maximum switching voltage: 24 V c.c.
• Maximum switching current: 50 mA
• Maximum frequency: 1 pulse/s
• Energy output: 100 pulses/kW·h
• Pulse duration: 500 ms
• Safety..... Class III – 300 V a.c. (EN-61010)

Protection against electric shock: by class II double-isolation

Standards: EN-61036, EN-61010

TECHNICAL SERVICE

For any inquiry about the instrument performance or whether any failure happens, contact to technical service:
Vial Sant Jordi, s/n
08232 Viladecavalls
(Barcelona) Spain
Tel. (+34) 93 745 29 00
Fax (+34) 93 745 29 14
e-mail: sat@circutor.es
web: www.circutor.com