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3.4 Instructions for use
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This product should not be used for the purpose of trading or certification of electric energy regulated by Measurement Law.
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This unit has a built-in clock. Set the clock (current date and time) prior to use. The accuracy of the clock is about 1 minute per month.
Adjust the time as necessary.
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Before operating the unit, carefully check that there are no bare electric wires in a live state around the unit. If bare wires are laid around the
unit, immediately stop operating, and take proper measures, such as insulation and protection.
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When the clock or any other parameter is set or any setting is changed, the consistency with the currently retained data on time of
occurrence of maximum and minimum values, values upon occurrence of alarms and time of occurrence of alarms may not be ensured. In
this case, reset the maximum value, and clear the time of occurrence of maximum value in the past.
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If a power failure occurs during setting from the display unit or the transmission line to the main body, values cannot be set correctly. Re-set
the values after power is restored.
Caution
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Do not disassemble or modify this product. Doing so can cause failure, electric shock or fire.
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Use the unit within the rated range stated herein. Using the unit out of the rated range may cause not only malfunction or unit failure, but
also ignition or burnout.
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A protective circuit against opening of the secondary terminal is incorporated on the secondary side of Models EMU2-CT5 (-4W),
EMU-CT50, EMU-CT100 and EMU-CT250. Opening the terminal during wiring work causes no problems. However, for safety, do not
continuously apply current with the terminal in the open state.
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The current sensors EMU-CT400 and EMU-CT600 dedicated for this unit and the general split-type potential current transformer CW-5SL
have similar shapes. But they have quite different characteristics. Connect an appropriate dedicated current sensor. If CW-5SL is
connected directly to this unit, unit failure, burnout or fire may occur.
3.5 Instructions for maintenance
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Wipe dirt on the surface with soft dry cloth. Avoid keeping a wipe in contact with the surface or wiping with benzene or thinner.
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Check the unit for the following points to ensure correct operation of the unit for a long time. Particularly, Items
○
1
to
○
3
shall be checked in
daily inspection.
○
1
Check the product for damage.
○
2
Check for abnormal indication of LED lamps.
○
3
Check for abnormal noise, odor and heat generation.
○
4
Check for loose fittings and loose wires on the terminal block.
(Perform the check stated in
○
4
in the power-off state. Failure to do so can cause electric shock, unit failure or fire.)
3.6 Instructions for storage
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When storing the unit, turn off power, disconnect cables and wires, and put them in vinyl bags or the like.
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When storing the unit for a long time, avoid keeping it in a place as shown below. Doing so may result in failure or decrease in service life.
⋅
Place where the ambient temperature is out of the range from
−
10
°
C to 60
°
C
⋅
Place where the humidity exceeds the humidity range (30% to 80%RH) or
condensation occurs
⋅
Place with much dust, corrosive gas, salt or oily smoke
⋅
Place where the unit is exposed directly to rain, water droplets or sunlight
⋅
Place where the daily mean temperature exceeds
35
°
C
⋅
Place with much vibration or impact
⋅
Place where metallic particles or inductive
substances are dispersed
3.7 Instructions for disposal
Dispose of this product appropriately in accordance with national or community rule.
3.8 Packaging materials and instruction manual
To reduce the effects on the environment, corrugated boards are used for packaging materials, and the instruction manual is printed on
recycled paper.
4.
Attention
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This document and this unit are delivered after strict quality control and product inspection. If the unit or instruction manual has any defect
caused by inadequacy of manufacture, we will replace it with a new one. Contact the store where you bought the unit. However, failure or
damage caused by act of God or incorrect usage is not included in the warranty.
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Understand that we are not liable for any trouble on the system caused by the customer or any third party, legal problem, failure caused by
improper use or during use of the unit and damage caused by other nonconformance.
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The product is warranted without charge for less than one year after the day of your purchase or the delivery to the designated place or
within 18 month after the day of shipment from our plant (reckoned from the date of manufacture), whichever comes first.
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The term of free warranty will not be renewed for the repaired product.
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It is prohibited to reprint or copy part or all of this document in any form without our permission.
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We are endeavoring to update this document to follow revisions to the software and hardware, but we cannot do so under unavoidable
circumstances.
