WND-WR-MB-Inst-1.03
Page 3 of 16
1 Precautions
●
Only qualified personnel or
licensed electricians
should install the WattNode meter. The mains
voltages of 100 to 600 Vac can be lethal!
●
Follow all applicable local and national electrical and safety codes.
●
The terminal block screws are
not
insulated. Do not contact metal tools to the screw terminals if
the circuit is live!
●
Verify that circuit voltages and currents are within the proper range for the meter model.
●
Use only UL Listed or Recognized current transformers (CTs). Depending on the meter options,
you may use either CTs with built-in burden resistors that generate 0.333 Vac (333 millivolts AC)
at rated current or milliamp output CTs that generate 40 mA at rated current.
Do not use 1 amp
or 5 amp output CTs: they will destroy the meter and may create a shock hazard.
●
Protect the line voltage conductors to the meter with fuses or circuit breakers. See
below.
●
Disconnect equipment from HAZARDOUS LIVE voltages before access.
●
If the meter is not installed correctly, the safety protections may be impaired.
1.1 Symbols
Read, understand, and follow all instructions including warnings and precautions
before installing and using the product.
Potential Shock Hazard from Dangerous High Voltage.
Functional ground; should be connected to earth ground if possible, but is not re-
quired for safety grounding.
UL Listing mark for U.S.A. and Canada.
FCC Mark. This logo indicates compliance with part 15 of the FCC rules.
Complies with the regulations of the European Union for Product Safety and Electro-
Magnetic Compatibility.
• Low Voltage Directive – EN 61010-1:2010 (3rd Edition)
• EMC Directive – EN 61326-1:2013
V
~
This indicates an AC voltage.
2 Overview
Congratulations on your purchase of the WattNode
®
Wide-Range Modbus
®
watt/watt-hour meter.
One model can measure 100 to 600 Vac, single-phase or three-phase, wye or delta services. It is
designed for use in demand side management (DSM), submetering, energy monitoring, billing and
renewable energy applications. The WattNode meter communicates on an EIA RS-485 two-wire bus
using the Modbus RTU protocol.
The WattNode Wide-Range Modbus meets the revenue metering ANSI C12.1 Class 1 standard
when used with class 0.6 current transformers and meets ANSI C12.20 Class 0.5 when used with
class 0.2 or class 0.3 current transformers.
2.1 Additional Literature
See the Continental Control Systems, LLC website (
) for product pages, datasheets, and
support pages for all WattNode meter models and current transformers. The WattNode Wide-Range
has an
with detailed information on the available measurements and interface.
