Tools

Power Distribution USAPower Distribution USA

4720 Power Meter

3-Phase Power Quality Meter, Analyzer and Controller

NO LONGER AVAILABLE

The 4720 power meter is an intelligent microprocessor-based, digital three-phase power meter designed for use in industrial and commercial applications where high accuracy and ruggedness are essential. The 4720 continuously collects, displays, and communicates real-time and min/max electrical data. Data can be viewed at a glance thanks to a high-visibility display. The 4720 power meter can be configured using the sealed membrane keypad on the front panel of the meter or you may view meter data or configure meter settings through communications with supervisory software, such as WinPM. The 4720's meter configuration is password protected.

The 4720 power meter provides clean, reliable power by integrating the many critical aspects of power metering, analysis, and control into one device. It is a cost-effective alternative to traditional analog electromechanical metering devices. It replaces numerous individual transducers and meters, while still offering many features previously unavailable in power instrumentation. The 4720 offers the high accuracy, reliability, and ruggedness of its companion products, the 4700 and 4300 power meters. The unit shares the mounting dimensions, installation requirements, and straightforward, flexible user interface of the 4700 power meter making it an ideal choice for upgrades.

4720 Power Meter Features:

Data collection and display

  • The meter performs over 300 high-accuracy, 3-phase measurements, including phase currents, phase voltages, average phase current, average phase voltage, amp demand, neutral current, kW, kW demand, kW hours, kVAR, kVAR hours, power factor, frequency, and auxiliary voltage.

Harmonic analysis

  • The meter measures total harmonic distortion, total even harmonic distortion, total odd harmonic distortion, and individual harmonic distortions for harmonics 2 through 15

Waveform capturing and recording

  • The meter provides waveform capturing and recording capability. You can capture or record a waveform of any of eight current or eight voltage inputs (128 cycles per second).

Setpoints

  • The meter offers standard and high-speed setpoints. Setpoints allow you to configure the meter to perform specified actions based on register values, harmonic distortion levels, and external signals. For example, you can configure the meter to record a waveform if the value in a specified device register exceeds a specified value. You can also configure the meter to control its relays based on a setpoint.

Output control relays

  • The meter has three Form-C output control relays rated at 10 amps. You can control these relays manually or through a setpoint.

Event logging

  • The meter automatically maintains a record of digital inputs, alarms, and relay activations. The meter attaches a date and time stamp to each event record.

Digital inputs

  • The meter has four digital inputs. You can use the inputs to monitor breaker status, protective relay status, or an external dry contact. You can also use the inputs as pulse counters.

Auxiliary voltage input

  • The meter has an auxiliary voltage input. You can use the input to measure an external variable, such as transformer temperature or battery voltage.

Auxiliary current output

  • The meter has an auxiliary current output. You can configure output to be proportional to any measured value. You can specify the current range of the output to be 0 to 20 mA or 4 to 20 mA.

Supervisory control

  • The meter offers you the option of using WinPM or other supervisory software to configure, monitor, and control the meter.

Additional Features:

  • On-Board Harmonic Analysis

  • High-Speed Waveform Capture

  • Digital Waveform Recorder

  • High Response Speed Setpoints Control System

  • Extensive On-Board DataLogging

  • Time Stamping of Events to 1ms

  • 3 Form-C Output Control Relays Programmable by Setpoints

  • 4 Digital Inputs for Monitoring Breaker Status, Protective 

  • Relay Status, or Any Other External Dry Contact 

  • Auxiliary Analog Voltage Input 

  • Extended Metering 

  • Captures Min/Max Data From Each Parameter 

  • Waveform Capture 

  • 3 Programmable Output Relays 

  • Programmable Analog Outputs for Inputs to SCADA, DCS, or Other Analog System 

  • Accepts Discrete Inputs and Communicates Upstream 

  • Large, Easy-to-Read, 20-Character Display 

  • Communications Module Connects to ACCESS System 

  • Configurable at Meter or Remotely Through Comm 

  • Built for Industrial Environment 

  • Microprocessor-Based Technology 

  • UL Listed

Metered Values

Parameter

Accuracy

Resolution

Range

Volts

0.2%

0.1%

0-999,999 (1)

Amps

0.2%

0.1%

0-9,999

kVA

0.4%

0.1%

0-999,999 (2)

kW

0.4%

0.1%

+999,999 (2)

kVAR

0.4%

0.1%

+999,999 (2)

Power Factor

1.0%

1.0%

-0.6 to 1.0 to +0.6

Frequency

0.2 Hz

0.1 Hz

50, 60 Hz

kW Demand 

0.4%

0.1 Hz

0-999,999

Amps Demand

0.2%

0.1 Hz

0-9,999

kW Hour-Forward

0.4%

1 kWH

0-999,999,999

kW Hour-Reverse

0.4%

1 kWH

0-999,999,999

kVAR Hour-Forward

0.4%

1 kVARH

0-999,999,999

kVAR Hour-Reverse

0.4%

1 kVARH

0-999,999,999

Vaux (1VAC scale)

0.25%

0.1%

0-9,999

Neutral Current

0.2%

0.1%

0-9,999

(1) Reads in kV (x1000) for readings over 9,999

(2) Reads in M (x1,000,000) for readings over 9,999


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