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WT300E Digital Power Meter
Brand: Yokogawa Electric Corporation
The WT300E series is the enhanced version of Yokogawa’s 5th generation of compact power meters.
The world’s best-selling power meter is the instrument of choice for a wide range of applications in production testing, quality assurance and research and development.
WT300E power meters are easy to use, cost effective and accurate for diverse applications such as the testing of electric devices, the development and evaluation of home appliances and induction cookers, battery and DC driven device testing, and conformance tests on uninterruptable power supplies.
The exceptional low power performance of the WT300E and power consumption software enables users to easily test their instruments to Energy Star, SPEC and standby power standards.
Features- The WT300E's wide range of functions and enhanced specifications allows handling of all the measurement applications from low frequency to high-frequency inverters using a single power meter.
- Accuracy with fast display and update rate:
- The WT300E series with the fast display update rate of 100 ms, offer’s engineers a short tact time in their testing procedures. The basic accuracy for all input ranges is 0.1% rdg + 0.05% rng (50/60Hz) and DC 0.1% rdg + 0.2% rng.
- Simultaneous Measurement:
- U/I/P/Freq/Integ(+/-)/Harmonics components/ THD with max. 100 ms cycle.
- In addition to standard power measurements, the WT300E series measures all DC and AC parameters. Additionally, the WT300E series can measure harmonics and perform integration simultaneously without changing the measurement mode. The accompanying WTViewerFreePlus software can monitor and save the 200 parameters used.
- Auto-ranging function available in selected ranges.
- The auto-range function is used to select or change the ranges automatically, within specified ranges. This results in shorter range changing times, allowing more efficient testing.
- Auto Ranging Function For Integration Measurement
- Typically, when power meters operate in an integration mode to measure power consumption and standby power, the measuring ranges need to be fixed. However, if the level of the input exceeds the maximum of the selected range, the test will need to be repeated. The WT300E Series has a high-speed automatic ranging capability in integration mode, which removes the need to repeat any test.
- Bandwidth: DC and 0.1 Hz to 100 kHz (WT310EH is up to 20 kHz for 40 A).
- Direct Input: Maximum direct input of up to 600 V and 20 A, or 40 A (WT310EH). The wide current input ranges on the WT310E series, give users the option to measure current as low as 50 micro-Amps to as high as 40Arms (WT310EH).
- High-speed data update (up to 10 readings per second)
Specifications
Accuracy
- ± 0.02 % - Timer Accuracy
- ± 0.06 % of Reading
- ± 0.15 % - Power Accuracy
- 0.02 % of Range/°C - DC Voltage Accuracy
- 1 mA/°C - DC Current Accuracy for WT310EH Direct Current Input
- 1 mV/°C - DC Current Accuracy for External Current Sensor Input (/EX1)
- 5 µA/°C - DC Current Accuracy for WT310E
- 50 µV/°C - DC Current Accuracy for External Current Sensor Input (/EX2)
- 500 µA/°C - DC Current Accuracy for WT310E (0.5-20 A Ranges) & for WT332E / WT333E Direct Current Input
Applications
- Automotive - Battery or DC Driven Device Evaluation
- Conformance & Evaluation Testing of Uninterruptable Power Supplies (UPS)
- Development & Evaluation Tool for Home Appliance
- Duration Testing & Efficiency Measurement for Industrial Motors & Rotating Machinery
- Evaluation of Large Current Equipment Such as Induction Heaters/Cookers
- Evaluation Testing of Special Waveform Driven Devices & Distorted Waveforms (Including DC Component)
- Production Line or QA Testing of Electric Devices
- Testing to International Standards, Such as IEC 62301, Energy Star & SPEC Power
Approvals & Certifications
- AS
- BS
- CSA
- EMC EN 55011 Class A, Group 1
- IEC 62301 E2.0
- IEEE 488.2 - for GP-IB
- KC
- NBR
- PSE
- UL
- VDE
Cable Length
- 9.84 feet (3 metres) or Less - for Serial (RS-232), GP-IB Interface Connector, USB Port (PC) & D/A Output Terminal
- 98.43 feet (30 metres) - for Ethernet Port
Cable Type
- Shielded Cable
Channels
- 12 Output Channels for Products with the/DA12 Option
- 2-Channels - for Frequency Measurement
- 4 Output Channels for Products with the/DA4
Communication
- 100 Mbps, Max.
- Baud Rate: 1,200, 2,400, 4,800, 9,600, 19,200, 38,400, 57,600 bit/sec - for Serial (RS-232) Interface
- Data Length: 1024
- Ethernet
- GPIB
- Modbus/TCP
- RS-232
- USB
Consumption
- 50 VA - Max.
- 70 VA - Max.
Conversion Time
- Approximately 10 µs - for A/D Converter
Current
- 0.25 to 10 A to Crest Factor 6 or 6 A for WT332E / WT333E & WT310E
- 0.5-20 A - for Crest Factor 3 (WT332E/WT333E) & for Crest Factor 6 or 6A (WT310EH) & Also for Crest Factor 3 (WT310E)
- 1-40 A - Direct Input Current Range (WT310HC) & Crest Factor 3 (WT310EH)
- 2.5 mA-10 A - Crest Factor 6 or 6 A for WT310E
- 2.5-100 mA - for Crest Factor 6 or 6 A (WT310E)
- 5 mA-20 A - Direct Input Current Range (WT310E)
- 5-200 mA - Crest Factor 3 for WT310E
- 6 A - Max.
- Peak Value of 150 A or RMS Value of 100 A, whichever is less - for WT310E
- Peak Value of 30 A or RMS Value of 20 A, whichever is less - for WT310E
- Peak Value of 450 A or RMS Value of 300 A, whichever is less - for WT310E, WT310EH & WT332E/WT333E
Display
- 4-Digit
- 5-Digits
- 7-Segment LED
- Digital Sampling Method
Electrical Connectors
- D-Sub 9-Pin Connector
- Plug-In Terminal (Safety Terminal) - Input Terminal Typical
- RJ45 Connector
- Typical B Connector (Receptacle)
Frequency
- 10 to 1,200 Hz - Fundamental Frequency of the PLL Source
- 20 Hz to 2 kHz - for Lead & Lag Detection
- 48 to 63 Hz - Permitted Supply Voltage Frequency Range
- 50/60 Hz - Rated Supply Frequency
- DC to 45 kHz - for Integration
- DC, 0.1 Hz to 100 kHz - Frequency Bandwidth
Function
- Scaling Function: OFF
Humidity
- 20 to 80 % Relative Humidity Non-Condensing - Operating & Storage Humidity
- 30 to 75 % Relative Humidity - for Voltage & Current Accuracy
Input
- 100 % or more of the Rated Measurement Range when the Crest Factor is 6 or 6 A
- 50 % or more of the Rated Measurement Range when the Crest Factor is 3
- Approximately 0.1 µH in Series with the Resistance - Input Inductance
- Approximately 13 PF in Parallel with the Resistance - Input Capacitance
- Peak Value of 1.5 kV or RMS Value of 1 kV, whichever is less - Continuous, Max.
- Peak Value of 2 kV or RMS Value of 1.5 kV, whichever is less - Instantaneous, Max.
- Peak Value of 2.8 kV or RMS Value of 2 kV, whichever is less - Instantaneous, Max.
Measurement Accuracy
- 0.1 % of Reading + 0.05 % of Range - Basic Power Measurement Accuracy
Measuring Range
- 15-600 V - for Crest Factor 3
- 7.5-300 V - for Crest Factor 6 or 6 A
Media
- Indoor
Mounting
- Rack-Mounted
Operating Temperature
- 5° to 40° C (41° to 104° F)
Output
- ± 5 V Full Scale (Approximately ± 7.5 V, Max.
Power Requirement
- Lithium Batteries
Remote Control & Monitoring Software
- External Hold - Remote Control Input Signal
- External Reset - Remote Control Input Signal
- External Start - Remote Control Input Signal
- External Stop - Remote Control Input Signal
- External Trigger - Remote Control Input Signal
- Reset
- Start
- Stop
Resistance
- 100 kiloohms - Min. Load & Input Resistance for External Current Sensor Input (/EX1)
- 6 milliohms - Input Resistance (WT332E / WT333E)
- Approximately 2 megaohms - Input Resistance (Voltage)
- Approximately 20 kiloohms - Input Resistance for External Current Sensor Input (/EX2)
- Approximately 5 milliohms - Input Resistance for WT310EH
- Approximately 500 milliohms - Input Resistance (Current) for WT310E
Resolution
- 1 Minute - Display Resolution (Display A Indication 100.00 to 9999.59)
- 1 second - Display Resolution (Display A Indication 0.00.00 to 99.59.59)
- 16-bits - for a/D & D/A Converter
- 1-Hour - Display Resolution (Display A Indication 10000)
Sample Rate
- Approximately 100 KS/s
Sensor Input
- 1.25-5 V - Crest Factor 6 or 6A for External Current Sensor Input (/EX1)
- 2.5-10 V - Crest Factor 3 for External Current Sensor Input (/EX1)
- 25 mV-1 V - Crest Factor 6 or 6 A for External Current Sensor Input (/EX2)
- 50 mV-2 V - Crest Factor 3 for External Current Sensor Input (/EX2)
Storage Temperature
- -25° to 60° C (-13° to 140° F)
Supply Voltage
- 100-240 Vac - Rated Supply Voltage
- 600 Vrms CAT II - Continuous, Max.
- 90-264 Vac - Permitted Supply Voltage Range
System Requirements
- Windows® 7 (32-bit/64-bit)
- Windows® 8 (32-bits/64-bits)
- Windows® Vista (32-bit/64-bit)
Temperature Coefficient
- ± 0.03 % of Reading/°C within the Range 5° to 18° C (41° to 64.4° F) or 28° to 40° C (82.4° to 104° F)
- ± 0.05 % of Full Scale/°C
Update Time
- 0.1 to 20 seconds
- 100 milliseconds to 20 seconds, Auto - Data Update Rate
- Approximately 30 minutes
Wiring
- Single-Phase, 2-Wire (1P2W) - for WT310E, WT310EH (One Element Model)
- Single-Phase, 3-Wire (1P3W) or Three-Phase, 3-Wire (3P3W) - for WT332E & WT333E (Two & Three Element Model)
- Three-Phase, 4-Wire (3P4W) or Three-Voltage, Three-Current (3 V 3A) - for WT333E (Three Element Model)
- Automotive - Battery or DC Driven Device Evaluation
- Conformance & Evaluation Testing of Uninterruptable Power Supplies (UPS)
- Development & Evaluation Tool for Home Appliance
- Duration Testing & Efficiency Measurement for Industrial Motors & Rotating Machinery
- Evaluation of Large Current Equipment Such as Induction Heaters/Cookers
- Evaluation Testing of Special Waveform Driven Devices & Distorted Waveforms (Including DC Component)
- Production Line or QA Testing of Electric Devices
- Testing to International Standards, Such as IEC62301, Energy Star & SPEC Power
