Panasonic LH2H Manual page 21

PRECAUTIONS IN USING THE HOUR METERS
1. Frequency setting
Frequency is specified for AC motor-driven hour meters. Before
installing, be sure to check your local power frequency.
2. Connections
• TH13,23,14,24,40,50,63,64
For measuring energized time of load
Hour meter
Single
phase
Hour meter
Three
phases
Note) Make the connection with the accompanying flat connector first and then
with the hour meter's terminal (#187). In such case, be sure to cover the connec-
tion with the accompanying insulating sleeve.
• TH70, TH8
Lead wire
DC power source
Note) Solder the lead wires in position.
3. Safety precautions
Do not use the hour meters in the following places.
• Where ambient temperature is below –10° or above +50°C
• In wet, dusty or gaseous environments
• Where exposed to vibrations and shocks
• Outdoors, or where exposed to rain or direct sunlight
4. Compliant with CE.
• LH2H
Ambient conditions:
Overvoltage category III, contamination factor 2, indoor use.
Ambient temperature and humidity –10 and +55°C and 35%
to 85%RH respectively.
• TH13, 23, 14, 24, 40, 50, 63, 64
Ambient conditions:
Overvoltage category II, contamination factor 2, indoor use.
Ambient temperature and humidity –10 and +50°C and below
85%RH respectively.
For measuring operation time of load
Switch ( Linked
Hour meter
with clutch )
Load Load
Switch ( Linked
Hour meter
with clutch )
Load Load
DC motor type hour meter
Load
5. Reset-type hour meter
• Precautions for use
If the number indications are off before use, press the reset
button and confirm that all zeroes ("0") are displayed.
• Resetting caution
Exercise due caution as an insufficient amount of pressure on
the reset button may result in abnormal readings.
6. Acquisition of CE marking
Please abide by the conditions below when using in applica-
tions that comply with EN 61010-1/IEC 61010-1
1) Ambient conditions
• Overvoltage category II, pollution level 2
• Indoor use
• Acceptable temperature and humidity range: -10 to +55°C,
35 to 85%RH (with no condensation at 20°C)
• Under 2000 m elevation
2) Use the main unit in a location that matches the following
conditions.
• There is minimal dust and no corrosive gas.
• There is no combustible or explosive gas.
• There is no mechanical vibration or impacts.
• There is no exposure to direct sunlight.
• Located away from large-volume electromagnetic switches
and power lines with large electrical currents.
3) Connect a breaker that conforms to EN60947-1 or EN60947-
3 to the voltage input section.
4) Applied voltage should be protected with an overcurrent pro-
tection device (example: T 1A, 250 V AC time lag fuse) that
conforms to the EN/IEC standards. (Free voltage input type)
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