CCS WNC-3Y-208-MB Wattnode Modbus Electric Power Meter Instruction Manual

CCS WNC-3Y-208-MB Wattnode Modbus Electric Power Meter

Precautions

• Only qualified personnel or licensed electricians should install the WattNode meter. The mains voltages of 120 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 UL Recognized current transformers (CTs) with built-in burden resistors, that generate 0.333 Vac (333 millivolts AC) at rated current. Do not use current output (ra-tio) CTs such as 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 (not needed for the neutral or ground wires). See 3.3.1 below.
• Disconnect equipment from HAZARDOUS LIVE voltages before access.
• If the meter is not installed correctly, the safety protections may be impaired.

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 required 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 61326-1:2006 Industrial Locations
• This indicates an AC voltage.

Overview

Congratulations on your purchase of the WattNode® Modbus® or WattNode Revenue for Modbus watt/watt-hour transducer (meter). 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 Revenue version meets the ANSI C12.1 standard for revenue metering when used with IEEE C57.13 class 0.6 current transformers, such as the Accu-CT®. Certain models have been independently certified by MET Laboratories and are listed on the California Solar Initiative (CSI) site as approved for PBI use.
Additional Literature
See the Continental Control Systems, LLC website (https://ctlsys.com) for product pages, datasheets, and support pages for all WattNode meter models and current transformers. Each WattNode model has an Operating and Reference Guide with detailed information on the avail-able measurements and interface.

Electrical Service Types

Electrical Service (or Load) Types| Line-to- Neutral (Vac)| Line-to- Line (Vac)| Meter Service Type| Meter Powered by
---|---|---|---|---
1 Phase 2 Wire 120V with neutral| 96 – 138| n.a.| 3Y-208| N and ØA
1 Phase 2 Wire 230V with neutral (non-N.A.)| 184 – 264| n.a.| 3Y-400| N and ØA
1 Phase 2 Wire 277V with neutral| 222 – 318| n.a.| 3Y-480| N and ØA
1 Phase 2 Wire 208V no neutral| n.a.| 166 – 276| 3D-240| ØA and ØB
1 Phase 2 Wire 240V no neutral| n.a.| 166 – 276| 3D-240| ØA and ØB
1 Phase 3 Wire 120V/240V with neutral| 96 – 138| 166 – 276| 3Y-208| N and ØA
3D-240| ØA and ØB
3 Phase 3 Wire Delta 208V no neutral| n.a.| 166 – 276| 3D-240| ØA and ØB
3 Phase 3 Wire Delta 400V no neutral (non- N.A.)| n.a.| 320 – 460| 3D-400| ØA and ØB
3 Phase 3 Wire Delta 480V no neutral| n.a.| 384 – 552| 3D-480| ØA and ØB
3 Phase 4 Wire Wye 120V/208V with neutral| 96 – 138| 166 – 276| 3Y-208| N and ØA
3D-240| ØA and ØB
3 Phase 4 Wire Delta 120/208/240V with neutral| 96 – 138| 166 – 276| 3D-240| ØA and ØB
3 Phase 4 Wire Wye 230V/400V with neutral (non-N.A.)| 184 – 264| 320 – 460| 3Y-400| N and ØA
3D-400| ØA and ØB
3 Phase 4 Wire Wye 277V/480V with neutral| 222 – 318| 384 – 552| 3Y-480| N and ØA
3D-480| ØA and ØB
3 Phase 4 Wire Delta 240/415/480V with neutral| 222 – 318| 384 – 552| 3D-480| ØA and ØB
3 Phase 4 Wire Wye 347V/600V with neutral| 278 – 399| 480 – 690| 3Y-600| N and ØA

Table 1 above lists the WattNode models and common circuit types. In the “Electrical Service Types” column, when two voltages are listed with a slash between them, they indicate the line-to-neutral / line-to-line voltages. The “Line-to-Neutral” and “Line-to-Line” columns show the operating ranges for the WattNode meters. “non-N.A.” refers to non-North American electrical services. Connect the line voltages to the meter inputs as shown in the following figures for each service type. See Figure 1 above for an overview.
Single-Phase Two-Wire with Neutral
This is a common residential and branch circuit connection. You may monitor up to three single-phase circuits with one meter by also using the ØB and ØC inputs.

Single-Phase Two-Wire, No Neutral
This circuit occurs in residential (commonly 120/240 Vac) and some commercial applications. The meter is powered from the ØA and ØB terminals. We recommend connecting the N terminal to ground to provide a clean voltage reference for the measurement circuitry (no current will flow through this terminal).

Single-Phase Three-Wire with Neutral

This is a common North American residential service at 120/240 Vac.

Three-Phase Three-Wire Delta, No Neutral
This is common in commercial and industrial settings. In some cases, the service may be four-wire wye while the load is three wire (no neutral). Occasionally, a load will only be connected to two of the three lines (say L1 and L2). For this case, connect the two active lines to the ØA and ØB terminals and connect two CTs for the two lines.

Three-Phase Four-Wire Wye with Neutral

This is a common commercial and industrial service.

Three-Phase Four-Wire Delta with Neutral (Wild Leg)

The uncommon four-wire delta electrical service is a three-phase delta service with a center-tap on one of the transformer windings to create a neutral for single-phase loads. The high-leg or phase with the higher voltage as measured to neutral has traditionally been des-ignated “Phase B”. A change to the 2008 NEC now allows the high leg of a four-wire three-phase delta service to be labeled as the “C” phase instead of the “B” phase. The WattNode meter will work correctly with the high-leg connected to ØA, ØB, or ØC. See the web article https://ctlsys.com/s/4wd/ for more information.

Grounded Leg Service

In rare cases with delta services or single-phase two-wire services without neutral, one of the phases may be grounded. The WattNode meter will correctly measure services with a grounded leg, but the measured volt-age and power for the grounded phase will be zero. The status LEDs will not light for the grounded phase because the voltage is near zero. This type of service may result in unusual power factors. For more information, see https://ctlsys.com/s/corner-gnd/.

Installation

Installation Checklist
See the sections referenced below for installation details.

• Turn off power before making line voltage connections.
• Mount the meter (see 3.2).
• Connect circuit breakers or fuses and disconnects (see 3.3.1).
• Connect the line voltage wires to the meter’s green terminal block (see 3.3.2).
• Mount the CTs around the line conductors. Make sure the CTs face the source (see 3.4).
• Connect the twisted white and black wires from the CTs to the black terminal block on the meter, matching the wire colors to the white and black dots on the meter label (see 3.4.1).
• Check that the CT phases match the line voltage phases (see 3.4).
• Record the CT rated current for each CT, because it will be required during commissioning.
• Connect the output terminals of the meter to the monitoring equipment (see 3.5).
• Check that all the wires are securely installed in the terminal blocks by tugging on each wire.
• Turn on power to the meter.
• Verify that the LEDs indicate correct operation (see 4.2, 4.3).

Mounting

• Protect the meter from temperatures below –40°C (–40°F) or above 75°C (167°F), excessive moisture, dust, salt spray, or other contamination, using a NEMA rated enclosure if necessary. The meter requires an environment no worse than pollution degree 2 (normally only non-con-ductive pollution; occasionally, a temporary conductivity caused by condensation).
• The meter must be installed in an electrical service panel or an enclosure.
• Do not use the meter as a drilling guide; the drill chuck can damage the screw terminals and metal shavings may fall into the connectors. The meter has two mounting holes spaced 5.375 in. (137 mm) apart (center-to-center). These mounting holes are normally obscured by the detachable screw terminals. Remove the screw terminals to mark the hole positions and mount the meter. Self-tapping #8 sheet metal screws are included. Don’t over-tighten the screws, as long-term stress on the case can cause cracking.

Connect Voltage Terminals
Circuit Protection
The WattNode meter is considered “permanently connected equipment” and requires a disconnect means (circuit breaker, switch, or disconnect) and overcurrent protection (fuse or circuit breaker). The meter only draws 10-30 milliamps, so the rating of any switches, disconnects, fuses, or circuit breakers is determined by the wire gauge, the mains voltage, and the current interrupting rating required.

• The disconnect or circuit breaker must be clearly marked, suitably located, and easily reached.
• Use circuit breakers or fuses rated for 20 amps or less.
• Use ganged circuit breakers when monitoring more than one line voltage.
• The circuit breakers or fuses must protect the mains terminals labeled ØA, ØB, and ØC. In the rare cases where neutral has overcurrent protection, then the overcurrent protection device must interrupt both neutral and the ungrounded conductors simultaneously.
• The circuit protection / disconnect system must meet IEC 60947-1 and IEC 60947-3, as well as all national and local electrical codes.

Line Wiring

• Always turn off power before connecting the line voltage inputs to the meter.
•  For the line voltage wires, CCS recommends 18 to 12 AWG stranded wire, type THHN, MTW, or THWN, 600 V.
• Use copper conductors only. The screw terminals are only rated for copper wire.
• Do not place more than one wire in a screw terminal; use additional wire nuts or terminal blocks if needed.
•  Verify that the line voltages are in the range of the line-to-line Ø-Ø and line-to-neutral Ø-N values printed in the white box on the front label. The screw terminals handle wire up to 12 AWG. Connect each voltage line to the green terminal block as shown in Figure 1 above. After the voltage lines have been connected, make sure both terminal blocks are fully seated in the meter. Connect each line voltage to the appropriate phase; also connect ground and neutral (if appli-cable). The neutral connection “N“ is not required on delta models (3D-240, 3D-400, and 3D-480), but we recommend connecting it to ground if neutral is not present. When power is first applied, check that the LEDs behave normally. If you see LEDs flashing red-green-red-green (see Figure 7), the line voltage is too high for this model, so disconnect the power immediately!

Grounding
The WattNode uses a plastic enclosure, insulation, and internal isolation barriers instead of protective earthing. The ground terminal on the green screw terminal block is a functional ground, designed to improve the measurement accuracy and noise immunity. If necessary, this terminal may be left disconnected on wye models (-3Y).
Connect Current Transformers
To meet the UL listing requirements, the meter must be used with UL Listed or the following UL Recognized current transformer models. These all generate 0.33333 volts AC at rated current.

• ACT-0750-xxx
• CTL-1250-xxx
• CTM-0360-xxx
• CTS-0750-xxx
• CTS-1250-xxx
• CTS-2000-xxxx
• CTB-WxL-xxxx
• CTT-0300-xxx
• CTT-0500-xxx
• CTT-0750-xxx
• CTT-1000-xxx
• CTT-1250-xxx
• CTRC-yyyyy-xxxx
• xxx” indicates the full scale current rating.
• “WxL” indicates the opening width (W) and leg length (L) in inches.
• “dddd” indicates the opening diameter of the loop for flexible Rogowski CTs.
• “yyyyy” indicates the opening size in mils (thousandths of inches).

See the web article https://ctlsys.com/s/select-cts/ for information on selecting appropriate cur-rent transformers (CTs).

• WARNING: To reduce the risk of electric shock, always open or disconnect circuit from power-distribution system or service of the building before installing or servicing current transformers.
• Do not use ratio or current output CTs such as 1 amp or 5 amp output models!
• The CTs are not suitable for Class 2 wiring methods and must be treated as Class 1 wires.
• Secure each current transformer and route the lead wires so that they do not directly contact live terminals or buses.
• Do not install current transformers where they would: 1) exceed 75 percent of the wiring space of any cross-sectional area within the equipment, 2) would block ventilation openings, or 3) would be in an area of breaker arc venting.
• See the CT datasheets for the maximum input current ratings.
• Be careful to match the CTs with the voltage phases. Make sure the ØA CT is measuring the current on the same phase being monitored by the ØA voltage input, and the same for phases B and C. Use the supplied colored labels or colored tape to identify the CT leads.
• To minimize measurement noise, avoid extending the CT wires beyond 50 feet (15 meters), es-pecially in noisy environments. If it is necessary to extend the wires, use twisted pair wire 22 to 14 AWG, rated for 300 V or 600 V (not less than the service voltage) and shielded if possible.
• Find the source arrow or label “THIS SIDE TOWARD SOURCE” on the CT and face/point toward the source of current.
• OPTIONAL: if you see spurious readings on unused phases, jumper the unused CT inputs: for each unused CT, connect a short wire from the terminal marked with a white dot to the terminal marked with a black dot. Install the CTs around the conductor to be measured and connect the CT leads to the meter as shown in Figure 1 above. Split-core CTs can be opened for installation around a conductor. A nylon cable tie may be se-cured around the CT to prevent inadvertent opening. CTs are directional. If they are mounted backwards or with their white and black wires swapped the measured power will be negative. The status LEDs indicate negative measured power by flashing red. When installing WattNode Revenue models, be sure to only use IEEE C57.13 class 0.6 current transformers, such as the Accu-CT; other CTs are less accurate and may not provide revenue ac-curacy. Contact sales for more information on appropriate CTs.

CT Wiring
The current transformers connect to the six position black screw terminal block. Connect the white and black CT wires to the meter terminals marked ØA CT, ØB CT , and ØC CT (see Figure 1 above). Excess length may be trimmed from the wires if desired. Connect each CT with the white wire aligned with the white dot on the label, and the black wire aligned with the black dot. Note the order in which the phases are connected, as the line voltage phases must match the current phases for accurate power measurement.
Connect the Output Signals

• The meter outputs are electrically isolated from dangerous voltages.
• If the output wiring is near line voltage wiring, use wires or cables with a 300 V or 600 V rating (not less than the service voltage).
• If the output wiring is near bare conductors, it should be double insulated or jacketed.
• You may install two wires into each screw terminal by twisting the wires together, inserting them into terminal, and securely tightening. Note: a loose wire can disable an entire network section.
• Use shielded twisted-pair cable to prevent interference. If there is no common conductor, con-nect the shield to the C terminal.

Modbus RTU
The WattNode Modbus meter can be connected to PCs with RS-485 interfaces, gateways, data loggers, and other devices that accept RS-485 Modbus RTU. Use DIP switches 1-7 to select the Modbus address (1 to 127).

Down
4+16 = 20| 0, Down| 0, Down| 1, Up| 0, Down| 1, Up| 0, Down| 0, Down
1+2+16+32

+64 = 115

| 1, Up| 1, Up| 0, Down| 0, Down| 1, Up| 1, Up| 1, Up

Select the baud rate by setting DIP switch position 8 (see below). The change will take effect im-mediately. 38,400 baud may be factory configured (Opt 38K) or programmed using the BaudRate register.

Connect RS-485

• RS-485 wiring can be complex when multiple devices are connected, when running wires for long distances, and when using termination and biasing resistors. If you have any questions, consult the Operating and Reference Guide.
• Be sure to connect the A-, B+, and C (common) terminals. The X terminal is normally not used. You may use the cable shield (if present) for the C connection.
• For long distances, use shielded twisted-pair cable to prevent interference. With shielded cable, connect the shield to earth ground at one end.

RS-485 wiring is daisy-chained between meters, with up to 64 devices per subnet. Operation

Initial Configuration
Generally, the network integrator will remotely configure the WattNode meter and the variables. For details on configuring the WattNode meter, see the appropriate Operating and Reference Guide for your model.
The meter does not include a display or buttons, so it is not possible to configure or monitor the meter directly, other than the basic LED diagnostics described below. At a minimum, the CtAmps must be programmed with the rated amps of the attached current transformers for correct measurements.
Power Status LEDs
The three status LEDs on the front of the meter can help indicate correct measurements and op-eration. The “A”, “B”, and “C” on the diagrams indicate the three phases.
Normal Startup
The meter displays the following startup sequence whenever power is first applied.

Positive Power
Any phase with the LEDs flashing green is indicating normal positive power.

No Power
Any phase with a solid green LED indicates no power, but line voltage is present.

No Voltage
Any phase LED that is off indicates no voltage on that phase.

Negative Power

Red flashing LEDs indicate that the meter is measuring exported or negative power (power flowing to the grid) on those phases. This is normal for generated power. For non-generation applications, this may indicate reversed CTs, swapped CT wires, or CTs not matched with line voltage phases.

Overvoltage Warning

The following indicates that the line voltage is too high for this model. Disconnect power immedi-ately! Check the line voltages and the meter ratings (in the white box on the label).

Meter Not Operating
If none of the LEDs light, then check that the correct line voltages are applied to the meter. If the voltages are correct, call customer service for assistance.

WattNode Error
If the meter experiences an internal error, it will light all LEDs red for three or more seconds. If you see this happen repeatedly, call customer service.

For other LED patterns, see the Operating and Reference Guide or contact support for assis-tance.
Modbus Communication LED
Near the upper left corner, there is a diagnostic Com (communication) LED that can indicate the following:

• Green Off A short green flash indicates a valid packet addressed to this device.
• Yellow Off Short yellow flashes or rapid flashing indicate valid packets addressed to differ-ent devices.
• Red A one second red flash indicates an invalid packet: bad baud rate, bad CRC, noise, bad parity, etc.
• R Y R Y R Y Rapid red/yellow flashing indicates a possible address conflict (two devices with the same DIP switch address).
• Red Solid red indicates the address is set to zero: an invalid choice.

Monitoring
The WattNode Modbus meter models communicate measurements over a Modbus RTU network. The measurements include: energy, power, voltage, current, line frequency, power factor, reactive power, and demand.
To monitor and configure networked WattNode models, you will need an appropriate monitoring solution, either standalone or PC software. See the Operating and Reference Guide for a complete list of network accessible variables.
Maintenance and Repair
The WattNode meter requires no maintenance. It is not user serviceable and there are no replace-able parts except the pluggable screw terminals. There are no diagnostic tests that can be per-formed by the user, other than checking for errors via the Modbus interface or the status LEDs. In the event of any failure, the meter must be returned for service (contact CCS for an RMA). For a new installation, follow the troubleshooting instructions in the Operating and Reference Guide before returning the meter for service, to ensure that the problem is not connection related. If desired, to clean the meter, disconnect power and then use a dry or damp cloth or a brush.

Specifications

The following is a list of basic specifications. For extended specifications, see the Operating and Reference Guide.
Accuracy
The following accuracy specifications do not include errors caused by the current transformer ac-curacy or phase angle errors. “Rated current” is the current that generates a CT output voltage of 0.33333 Vac.

Normal Operation:

• ine voltage : -20% to +15% of nominal
• Power factor: 1.0
• Frequency: 48 – 62 Hz
• ambient Temperature: 23°C ± 5°C
• CT Current: 5% – 100% of rated current
• Accuracy: ±0.5% of reading For accuracy at other conditions, see the reference guide.

WattNode Revenue Models:

• Meets the ANSI C12.1-2008 standard for revenue metering when used with IEEE C57.13 class 0.6 current transformers. Includes a certificate of calibration.

Measurement

• Update Rate: 1.0 second. Internally, all measurements are performed at this rate.
• Start-Up Time: ~1.0 second. The meter starts communicating this long after AC voltage is ap- plied. Energy measurement starts 50-100 milliseconds after AC is applied.
• Default CT Phase Angle Correction: 0.0 degrees.

Electrical

Meter Service Type| Nominal Vac Line-to-Neutral| Nominal Vac Line-to-Line| Phases| Wires
---|---|---|---|---
3Y-208| 120| 208–240| 1 or 3| 2 – 4
3Y-400| 230| 400| 1 or 3| 2 – 4
3Y-480| 277| 480| 1 or 3| 2 – 4
3Y-600| 347| 600| 1 or 3| 2 – 4
3D-240| 120| 208–240| 1 or 3| 2 – 4
3D-400| 230| 400| 3| 2 – 4
3D-480| 277*| 480| 3| 2 – 4

Note: the delta models have an optional neutral connection that may be used for measuring wye circuits. In the absence of neutral, voltages are measured with respect to ground. Delta
WattNode models use the phase A and phase B connections for power.

• Over-Voltage Limit: 125% of nominal Vac. Extended over-voltage operation can damage the WattNode and void the warranty.
• Over-Current Limit: 120% of rated current. Exceeding 120% of rated current will not harm the WattNode meter but the current and power will not be measured accurately.
• • (1) Note: The Rated VA is the maximum at 115% of nominal Vac at 50 Hz. This is the same as theMaximum Surge: 4kV according to EN 61000-4-5, 6kV for WattNode Revenue models. Power Consumption: The following table shows maximum volt-amperes, the power supply ranges, typical power consumption, and typical power factors with all three phases powered at nominal line voltages. The power supply consumes most of the total power, while the measure-ment circuitry draws 1-10% of the total (6-96 milliwatts per phase, depending on the model). Due to the design of the power supply, WattNode meters draw slightly more power at 50 Hz.
    Meter Service Type| Real Power (60 Hz)| Real Power (50 Hz)| Power Factor| Rated VA (1)| Power Supply Range (Vac)| Power Supply Terminals
    ---|---|---|---|---|---|---
    3Y-208| 1.5 W| 1.8 W| 0.79| 4 VA| 96 – 138| N and ØA
    3Y-400| 1.6 W| 1.8 W| 0.73| 4 VA| 184 – 264| N and ØA
    3Y-480| 1.6 W| 2.0 W| 0.69| 4 VA| 222 – 318| N and ØA
    3Y-600| 1.0 W| 1.3 W| 0.76| 4 VA| 278 – 399| N and ØA
    3D-240| 1.2 W| 1.5 W| 0.70| 4 VA| 166 – 276| ØA and ØB
    3D-400| 1.1 W| 1.4 W| 0.67| 3 VA| 320 – 460| ØA and ØB
    3D-480| 1.2 W| 1.6 W| 0.70| 3 VA| 384 – 552| ØA and ØB

Note: The Rated VA is the maximum at 115% of nominal Vac at 50 Hz. This is the same as the value that appears on the front label of the meter.

• Maximum Power Supply Voltage Range: -20% to +15% of nominal (see table above). For the 3D-240 service, this is -20% of 208 Vac (166 Vac) to +15% of 240 Vac (276 Vac).
• Operating Frequencies: 50/60 Hz
• Measurement Category: CAT III

Measurement category III is for measurements performed in the building installation or on the load side of the main service breaker. Examples are measurements on distribution boards, circuit-breakers, wiring, including cables, bus-bars, junction boxes, switches, socket-outlets in the fixed installation, and equipment for industrial use and some other equipment, for example, stationary motors with permanent connection to the fixed installation.
The line voltage measurement terminals on the meter are rated for the following CAT III voltages (these ratings appear on the front label):

3Y-208

3D-240

| 240 Vac
3Y-400

3D-400

| 400 Vac
3Y-480

3D-480

| 480 Vac
3Y-600| 600 Vac

Current Transformer Inputs:

• Nominal Input Voltage (At CT Rated Current): 0.33333 Vac RMS
• Absolute Maximum Input Voltage: 5.0 Vac RMS
• Input Impedance at 50/60 Hz: 23 kΩ

EIA RS-485 Interface

• RS-485 Output Isolation: 4500 Vac RMS

Driver Output:

• Voltage (Open Circuit) : ±6 Vdc maximum
• Voltage (54 Ω load): ±1.5 Vdc minimum
• Current (54 Ω load): ±60 mA typical
• Rise Time (54 Ω || 50 pF load): 900 nS typical

Receiver:

• Common-Mode Range: -7 Vdc to +12 Vdc max
• Sensitivity: ±200 mV
• Bus Load: 1/8 unit load (up to 64 meters)
• Failsafe Modes: bus open, shorted, and idle

Certifications

Safety:

• UL 61010-1 (3rd Edition)
• CAN/CSA-C22.2 No. 61010-1-04
•  IEC 61010-1:2010 (3rd Edition)

Immunity: EN 61326: 2006 (Industrial Locations)

• Electrostatic Discharge : EN 61000-4-2
• Radiated RF Immunity: EN 61000-4-3
• Electrical Fast Transient / Burst: EN 61000-4-4
• Surge Immunity: EN 61000-4-5
• Conducted RF Immunity: EN 61000-4-6
• Voltage Dips, Interrupts : EN 61000-4-110

Emissions

• FCC Part 15, Class B
• EN 55022: 1994, Class B Revenue Metering:

Revenue Metering:

•  ANSI C12.1-2008

Environmental

• Operating Temperature: -40°C to +75°C (-40°F to 167°F)
• Altitude: Up to 2000 m (6560 ft)
• Operating Humidity: non-condensing, 5 to 90% relative humidity (RH) up to 40°C, decreasing linearly to 50% RH at 55°C.
• Pollution: POLLUTION DEGREE 2 – Normally only non-conductive pollution; occasionally, a temporary conductivity caused by condensation must be expected.
• Indoor Use : Suitable for indoor use.
• Outdoor Use : Suitable for outdoor use if mounted inside an electrical enclosure (Hammond Mfg., Type EJ Series) rated NEMA 3R or 4 (IP 66).

Mechanical

• Enclosure: High impact, ABS/PC plastic
• Flame Resistance Rating: UL 94V-0, IEC FV-0 Size: 6.02 in. × 3.35 in. × 1.50 in. (153 mm × 85 mm × 38 mm)
• Connectors : Euroblock pluggable terminal blocks
• Green: up to 12 AWG (2.5 mm2), 600 V, screw torque 4.4 lbf·in (0.5 N·m)
• Black: up to 12 AWG (2.5 mm2), 300 V, screw torque 4.4 lbf·in (0.5 N·m)

FCC Information

This equipment has been tested and complies with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. The FCC limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interfer-ence to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Warranty
The WattNode Modbus (WNC series) meters sold by Continental Control Systems, LLC (CCS) are guaranteed against defects in material and workmanship for a period of five years from the original date of shipment. CCS’s responsibility is limited to repair, replacement, or refund, any of which may be selected by CCS at its sole discretion. CCS reserves the right to substitute functionally equiva-lent new or serviceable used parts. This warranty covers only defects arising under normal use and does not include malfunctions or failures resulting from: misuse, neglect, improper application, improper installation, water damage, acts of nature, lightning, product modifications, alterations or repairs by anyone other than CCS. Except as set forth herein, CCS makes no warranties, expressed or implied, and CCS dis-claims and negates all other warranties, including without limitation, implied warranties of merchantability and fitness for a particular purpose.

Limitation of Liability

In no event shall CCS be liable for any indirect, special, incidental, punitive or consequen-tial damages of any kind or nature arising out of the sale or use of its products whether such liability is asserted on the basis of contract, tort or otherwise, including without limitation, lost profits, even if CCS has been advised of the possibility of such damages. Customer acknowledges that CCS’s aggregate liability to Customer relating to or arising out of the sale or use of CCS’s products, whether such liability is asserted on the basis of contract, tort or otherwise, shall not exceed the purchase price paid by Customer for the products in respect of which damages are claimed. Customer specifically acknowledges that CCS’s price for the products is based upon the limitations of CCS’s liability set forth herein. ©2009-2021 Continental Control Systems, LLC. Document Number: WN-Inst-MB-2.31 Revision Date: July 21, 2021
Continental Control Systems, LLC + 1-303-444-7422, https://ctlsys.com

• WattNode is a registered trademark of Continental Control Systems, LLC.
• Modbus is a registered trademark of Schneider Automation Inc.

References

• CCS - Power Meters, Power Monitors, Current Transformers, & More
• CCS - Power Meters, Power Monitors, Current Transformers, & More
• Four Wire Delta Circuits - Continental Control Systems, LLC
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