Mitsubishi Electric EcoMonitorLight EMU4-BD1-MB Manual page 37

＜Connection with Current Sensor＞

●Always be sure to use this unit in combination with a dedicated current sensor (EMU-CT50, EMU-CT100, EMU-CT250, EMU-CT400, EMU-CT600,

EMU2-CT5, or EMU2-CT5-4W). This unit cannot be directly connected to the secondary side (5 A) of a current transformer. Do not use a current sensor

input that exceeds the corresponding rating of this unit. Refer to the current sensor operation manual in order to maintain the functionality and accuracy of

this unit.

●A dedicated current sensor (EMU-CT50, EMU-CT100, EMU-CT250, EMU-CT400 or EMU-CT600) is only used for low-voltage circuits. It cannot be used for

a high-voltage circuit. Use EMU2-CT5 or CT5-4W transfixed to the secondary side (5A) of transformer. Connecting with a high-voltage circuit by mistake is

extremely dangerous and can cause unit burnout or fire. Refer to "Specifications: Options (Split Current and 5A Current Sensors)" on p. 26 for maximum

voltages that can be used with current sensors.

●Dedicated current sensors have a given polarity (directionality). Be careful to install in the proper polarity.

＜Connecting with Frame GND Terminal＞

●Do not exceed the range of specified voltage values when performing insulation resistance or commercial frequency withstand voltage tests. Do not

connect the frame GND terminal to ground when performing such tests.

●Ground the frame GND terminal according to actual conditions of use. Use a D-type ground connection (ground resistance is 100 Ω or less).

●Use a crimp-type terminal appropriate for the size of electric wires. Use of an inappropriate crimp-type terminal can result in wire breakage or contact failure

that causes module malfunction, failure, burnout or fire.

Precautions Regarding Use

●This unit cannot be used for transactions or proof of power use as stipulated by the Measurement Act.

●Before operating this module, thoroughly check that there are no energized bare wires or similar hazards nearby. If there are any exposed conductors or similar

hazards, stop operation immediately and implement appropriate measures such as insulation protection.

●A power outage while specify settings will result in such settings not being properly set. Specify the settings again after power has been restored.

●Do not touch live part. Doing so can result in electric shock, electric burn injury and equipment damage.

●Do not perform installation or wiring with equipment energized and do not perform live wire work.

●Do not touch charged parts. Doing so can result in electric shock, electric burn injury and equipment damage.

●Use within the rating ranges indicated in this manual. Using outside of the rating ranges can not only result in misoperation or equipment malfunction but

can also cause fire or burnout.

Precautions for Maintenance and Inspection

●Wipe off surfaces using a soft cloth. Do not allow any type of chemical cloth to remain touching the unit for an extended period, and do not use benzene,

thinner or similar chemicals for cleaning.

●Check for the following items in order to ensure proper operation and long product life of this unit.

（1） Daily Inspection

  ①No damage to the unit

  ②LED and LCD screens are operating properly.

  ③There are no abnormal noises, odor, heat

generationor similar problems.

Precautions for Storage

●Before storage, turn off the power, remove wires, and place the unit in a plastic bag.

●Do not store the module in the types of locations described below when storing for an extended period. Storing in such places can result in malfunction and

reduced service life.

・ The ambient temperature exceeds the storage range temperature (-10 to +60 °C).

・ The average daily temperature exceeds 35 °C.

・ There is excessive vibration or impacts.

・ Metal fragments or conductive substance are scattered.

Precautions for Disposal

●Properly dispose of this unit in accordance with the Waste Disposal and Public Cleansing Act.

About disposal of the battery

●When the lithium battery is built in, please

process the lithium battery in accordance

with the rule of cities, towns and villages. 

About Packaging Materials and Operation Manual

●Packaging materials are made of cardboard and the operation manual is printed on recycled paper in order to reduce the load on the environment.

DANGER

CAUTION

（2） Periodic Inspection

  Inspect the following items from every six months to one year.

   ・ There is no looseness in installation or wiring connections of terminals.

Always be sure to perform periodic inspection with all power turned off. Failure to

CAUTION

do so can result in electric shock, equipment malfunction or fire.

Periodically tighten terminals. Failure to do so can result in fire.

・ The relative humidity exceeds the humidity range (30-85% RH).

・ There are large amounts of dust, corrosive gas, saline or oily smoke.

・ Exposed to rain, water drops or direct sunlight.

The removed lithium battery has a possibility that electric power capacity remains.

CAUTION

Since there is a possibility of contacting other metal, and generating heat,

exploding and igniting, please manage individually.

*Refer to the operation manual (Detailed Version) for details.

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