8
Important safety points
Observe the following to ensure safe use of model KM-N3.
• Do not use or store the product in any of the following locations.
– Locations subject to shock or vibration
– Unstable locations where the user might fall/tumble down
– Locations subject to temperatures or humidity outside rated ranges
– Locations subject to condensation as the result of severe changes in temperature
– Outside or otherwise exposed to direct sunlight and weather
– Locations subject to static electricity or other forms of noise
– Locations exposed to electromagnetic fields
– Locations subject to exposure to water or oil.
– Locations subject to exposure to salt water spray.
– Locations subject to corrosive gases (in particular, sulfide gas and ammonia gas).
– Locations subject to dust (including iron dust).
– Locations subject to exposure to solvents
• Be sure to wire properly with the terminals with correct symbols.
• Use AWG20 to 16 (with a cross-section of 0.5 to 1.5mm
2
) to wire the power supply terminals. The heat resistant
temperature of the wire is 85 degree or more.
• Use AWG18 to 14 (with a cross-section of 0.75 to 2.0mm
2
) to wire the CT and measurement voltage terminals.
Use the crimping terminals of the round shape or Y-shape compatible with the M3 screw. The heat resistant
temperature of the wire is 85 degree or more.
• Use twisted or solid wire AWG24 to 16 (with a cross-section of 0.25 to 1.5mm
2
) to wire communication terminals. The
heat resistant temperature of the wire is 85 degree or more.
• Before using or maintaining the product, thoroughly read and understand this manual.
• Understand the user manual before setting the device.
• Do not pull cables.
• For compliance with standards and safety, in order that the worker may turn OFF the power immediately, install a
branch circuit breaker conforming to the voltage at which the device is used and the appropriate standards of the
country where the device is used (US: UL Listed, Canada: cUL Listed, and other countries: for example, IEC60947-
1 and IEC60947-3), and indicate that the breaker is a device to disconnect the circuit for product safety. A branch
circuit breaker with a rated current of 1A is recommended.
• Do not touch any of the terminals while the power is being supplied.
• Do not install the product close to heat-producing devices (those using coil elements, for instance).
• Separate the product wiring from high-voltage or high-current power lines to prevent inductive noise. Do not place
the product wiring parallel to or in the same ducts or conduits as power lines. Use separate ducts, separate
conduits, or shielded cables to prevent noise.
• This is a “class A” product. In residential areas it may cause radio interference. The user may be required to take
adequate measures to reduce interference if this occurs.
• Use the product by incorporating it in a panel 1 to 8 mm thick. If the panel thickness is not appropriate or the
mounting method is not appropriate, the product might be come off.
