Low Voltage Directive - Panasonic KW9M User Manual

3.8 Low Voltage Directive

For using under the measurement category III, install varistors or SPD between the lines of power
supply and the measured voltage input. Use the varistors or SPD which is complied with European
standard and specifications to meet power supply and added current.
When using in the application conforming to EN61010-1/IEC61010-1, make sure to satisfy the following
conditions.
1) RS485 communication part and pulse input part secure only basic insulation. In order to secure
reinforced (double) insulation demanded by EN 61010-1/ IEC61010-1, secure basic insulation or
more with load side and reinforced (double) insulation with RS485 communication system side.
2) Provide the voltage input part with an EN60947-1 or EN60947-3 compliant circuit breaker.
3) Use a wire with basic insulation or more for a wire cramped (or connected) CT
4) Vn terminal should be connected to N-phase which is grounded.
【Environmental conditions】
・Overvoltage category Ⅱ, Pollution degree 2
・Indoor use
・An ambient temperature of -25 to +55℃
・An ambient non-condensing humidity of 30 to 85%RH (at 20℃)
・Altitude of 2000m or less
【Mount the product in a place with】
・A minimum of dust, and an absence of corrosive gases
・No flammable, explosive gasses
・Few mechanical vibrations or shocks
・No exposure to direct sunlight
・No large capacity electromagnetic switches or cables through which large current is flowing
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