Mitsubishi Electric ZT15B User Manual

Through type zero-phase current transformer
Split type zero-phase current transformer
Model ZT15B/ZT30B/ZT40B/ZT60B/ZT80B/ZT100B
Model CZ-22S/ CZ-30S/ CZ-55S/ CZ-77S/ CZ-112S
User's Manual
・This instruction manual is for zero-phase current transformer(not included) and split type zero-phase current transformer (not included) that use with EMU4-LG1-MB.
・Be sure to read this instruction manual and the manual of measuring unit before use.
・The following items for zero-phase current transformer(not included) are included in package. Check that no items are missing
Through type zero-phase current transformer(ZT15B/ZT30B/ZT40B/ZT60B/ZT80B/ZT100B)×1
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or split type zero-phase current transformer (CZ-22S/ CZ-30S/ CZ-55S/ CZ-77S/ CZ-112S)×1
Instruction manual×1(CZ-22S/ CZ-30S/ CZ-55S/ CZ-77S/ CZ-112S)
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1 ．Safety Precautions
1.1 Precautions concerning working environment and conditions
Do not use the unit in any of the following places. Doing so may cause malfunctions or a reduction in service life.
・Places where the ambient temperature exceeds the working temperature
range(-5°C to +50°C).
・Places where the humidity exceeds the humidity range (30% to 85%RH)
or where condensation occurs.
・Places with a lot of dust, corrosive gas, salt or oily smoke.
・Place where the altitude exceeds 2000m.
1.2 Precautions concerning preparations before using the equipment
･Use the unit in the specified usage environment and
conditions.
1.3 Precautions concerning installation and connection
・Perform installation, disassembly, the wiring work after intercepting a power supply by all means . There might be the damage of an electric shock or
Danger
the product.
・Before installing and connecting the unit, read the instruction manual without fail. For safety, the unit shall be installed and connected by experts in
electrical work.
・Connect the wires carefully, checking the wiring diagram. Incorrect wiring can cause unit failures, fires, and electric shocks.
・UL／c-UL listed corresponds, use the wires according to the following conditions and UL-listed crimp type terminals.
Single wire：AWG24 to AWG17(φ0.5 to 1.2mm)、Stranded wire：AWG20 to AWG16(φ0.5 to 1.3mm
・Connect the wires carefully, checking the wiring diagram. Incorrect wiring can cause unit failures, fires, and electric shocks.
・Use an electric wire of the size of penetrating this ZERO PHASE CURRENT TRANSFORMER (ZCT) for primary side cable, do not use a
non-insulation electric wire or a metal for a primary cable
・Zero phase current transformer is high-precision magnetic material. Please use not to applied weight of primary through type electric wire and external
force. Please hold not to applied weight of primary through type electric wire to zero phase current transformer. It might be cause of exterior
destruction.
Caution
・Use the crimp-type terminal for secondary terminal and test terminal. If inappropriate crimp-type terminal is used, a wire breakage or a contact failure
may occur, which may cause a device malfunction, a failure, a burnout or a fire.
・Please wire not give vibration and impact directly in secondary terminal.
・Read the manual of measuring units which is used with zero-phase current transformer, and is used well, and follow it.
・Use this zero-phase current transformer in cabinet certainly.
・Confirm that a terminal is closed surely. The lack of clamping causes malfunction of the machinery, a fire, the electric shock.
・Carry out the clamping of the crimp-type terminal lugs by prescribed torque. The excessive clamping becomes the ruination of a terminal and the
screw.
・As for the panel, it be assumed that it was given the following matters.
a) It is necessary to attach a key to the cabinet.
b) The structure that a power supply is intercepted automatically is necessary when opening a cabinet.
1.4 Precautions concerning in using
・Use the unit within the rated range stated here. Using the unit out of the rated range may cause not only malfunctions or unit failure, but also fires or
burnout.
Caution
・Do not open the secondary side of the ZCT while the primary current is running.
1.5 Precautions concerning maintenance and inspection
・Wipe off the surface dirt with tender cloth. Don't let chemical cloths touch it for a long time, and do not wipe it with benzine or thinner.
・Use a soft dry cloth to clean off dirt of the unit division surface.
・Check for the following items to use this unit properly for long time.
（1）Daily inspection
① Does not this product have the damage?
（2）Periodic inspection（Check once in 6 months to 1 year）
・Are not there installation, the slack of the screw?
1.6 Precautions concerning storage
・When storing the unit, turn off power, disconnect cables and wires, and put them in vinyl bags or the like.
・When storing the unit for a long time, avoid keeping it in the places shown below.
・Places where the ambient temperature is out of the range from -10°C to +60°C.
・Places where the humidity exceeds the humidity range (5% to 90%RH) .
・Places with a lot of dust, corrosive gas, salt or oily smoke.
1.7 Precautions concerning disposal
Dispose this product appropriately in accordance with the national or community rule.
1.8 About packaging materials and this manual
For reduction of environment load, packaging materials are produced with cardboard, and this manual is printed on recycled paper.
・Places exposed to direct sunlight.
・Places where metal pieces or inductive
substances are laying around.
・Places with a lot of vibration or impacts.
・Places where the circuit with many
harmonics.
･Check the current and voltage ratings
of the equipment.
② Are not there an abnormal sound, bad-smelling fever?
・Places with a lot of vibration or impact.
・Places where the unit is exposed directly to rain, water droplets.
・Places where metallic particles or inductive substances are laying around.
・Places where the out of the cabinet.
・Places with strong electromagnetic field
or noise.
・Places where the unit may be exposed
to rain or drops of water.
・Places where the daily average
temperature exceeds +35°C.
・Don't give this product vibration, a shock at the time of the
transportation as much as possible.
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