739880 YOKOGAWA, 739880 Datasheet - Page 28

• Manufacturer Part Number: 739880
• Description: NIMH BATTERY, 10.8V, 210mAH
• Manufacturer: YOKOGAWA

Specifications of 739880

• Battery Capacity: 210mAh
• Battery Voltage: 10.8V
• Battery Technology: Nickel Metal Hydride
• Voltage Rating: 10.8V
• Lead Free Status / RoHS Status: na

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Digital Power Analyzers
http://tmi.yokogawa.com/products/digital-power-analyzers/
Growing interest in energy conservation of late increases the need
to evaluate motor/inverter effi ciency with high precision. The WT3000
offers up to four voltage and four current inputs and is capable of
high-precision measurement of single-phase input and three-phase
output to evaluate the inverter effi ciency.
A motor evaluation function (option) allows you to observe changes
in voltage, current, and power while at the same time observing
changes in revolution speed and torque, and calculate and display
mechanical power and total effi ciency.
Also, you can synchronize two units and take measurements, and
WTViewer software for data acquisition allows you to compare the
power of the two units and calculate the effi ciency.
Input waveform
Precision Power Analyzer
High-precision measurement of motor/inverter effi ciency
Best-in-class
Best-in-class
±0.06% of Total More Precise, More Bandwidth, and Simultaneous
±0.06% of Total More Precise, More Bandwidth, and Simultaneous
Measurement
Measurement
Inverter effi ciency
Primary side
Current sensor units
751521 (single phase)
751523 (three phase)
Example of measurement data display
on the primary and secondary sides
Inverter
Applications to Utilize WT3000 Precision Power Analyzer’s Capabilities
*1 *1
Secondary side
WT3000
WT3000
Precision and Stability with Basic Power Accuracy:
Precision and Stability with Basic Power Accuracy:
(*1: As of August 2010, for power accuracy in a three-phase power meter as investigated by Yokogawa)
Output waveform
Analog or pulse input
(Revolution speed and torque)
Motor
Load
The WT3000 has the highest precision of all the Yokogawa power
analyzers in the WT series. The WT3000 can be used as a refer-
ence instrument for calibration and to measure the power and
conversion effi ciency of power transformers such as an inverter.
It helps increase effi ciency in evaluation and testing.
To observe the rising characteristic of
In photovoltaic power generation, MPPT control varies the voltage
to maximize energy harvested from the solar panel. The WT3000
allows you to measure voltage, current, and power, as well as
peak voltage and peak current (on the plus and minus sides,
respectively). Also, the user-defi ned math allows you to measure
the instantaneous peak power (on the plus and minus sides).
a starting motor or the like, you may
want to acquire data for each cycle
instead of at specifi ed time intervals.
The cycle-by-cycle measurement (/CC
option) of the WT3000 allows you to
measure the following parameters:
voltage, current, active power,
apparent power, reactive power,
power factor, speed, torque, and mechanical power. Up to 3,000
periods of measurements can be taken.
Measuring instantaneous peak power in photovoltaic power generation
Cycle-by-cycle function allows measuring voltage, current, and power
for each cycle
Basic power accuracy ±0.06% of total, the highest precision of all power analyzers in the WT series
Up to four input elements to achieve accurate measurement of input and output conversion effi ciency
Great improvement in measurement accuracy at low power factors when evaluating the
Motor effi ciency and total effi ciency measurement of the motor version
Continuous maximum common mode voltage 1,000 Vrms to deal with high-voltage devices
Simultaneous harmonic measurement without changing measuring modes (option)
Wide bandwidth harmonic measurement between 0.1 Hz and 2.6 kHz of the fundamen-
Built-in printer (option)
USB (media, keyboard, PC connection) (option)
loss of transformers or the like
tal waveform (option)
Ethernet interface (option)
Harmonic measurement compliant with IEC61000-3-2/12 and (option)
Voltage fl uctuation/fl icker measurement compliant with IEC61000-3-3/11
MPPT: Maximum Power Point Tracker
Example of measurement results of voltage,
current, and power under control
* This is just an illustration.
The actual measurement
may be affected by noise.
Example of cycle-by-cycle measurement of three-phase
Voltage
voltage, current, active power, and apparent power
Peak power
Features
Example of power (P1) and instantaneous peak
power on the plus (F1) and minus (F2) sides
Cycle-by-cycle data computation
(option)