About the PM-620
        The PM-620 is a PowerLogic Power Meter by Square D/Schneider Electric. The PM-620 is designed to retrofit easily into industrial settings and has applications onboard including switchboards, panelboards, and LVDO (Low Voltage Drawout) feeders. Some of the PM-620's features include:
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	ANSI C12.16 Revenue Accuracy 
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	RS-485 Communications Standard 
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	Can direct connect up to 600V 
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	Has an onboard calendar and clock 
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	Accepts 3-Phase, 3-Wire Delta (Calculated B Phase or Metered) system connections 
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	Accepts 3-Phase, 4-Wire Wye system connections 
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	Has a wide operating temperature of 0 to +60 degrees Celsius 
The PM-620 comes with onboard instrumentation, is accurate to a 0.3% deviation, has a date/time stamp, and THD/thd. Calculated neutral current, peak power, and wiring diagnostics are standard. The PM-620 is designed with the following meter connections:
The PM-620 is CE marked, CSA certified and UL listed. To comply with CE electromagnetic compatibility requirements, the power meter must be installed within switchgear (a metal box.) A Merlin Gerin Disconnect Breaker (Type P25M #21104 or IEC 947 equivalent) needs to be connected to control power inputs and metering voltage. Power should be from a stable voltage source whenever possible. If a stable source is unavailable a metered circuit of up to 600V may be used.  This meter may be mounted on an enclosure floor, an enclosure wall, a horizontal 35 mm DIN rail, or directly behind the display on the panel door. Only a qualified electrician or electrical personnel should upgrade or install the PM-620 or its peripherals. Failure to observe safety precautions may result in personal injury or equipment damage.