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IM CW240E
1.1 Product Overview
The CW240 is a clamp-on power meter that measures items necessary for
various power measurements or power quality analyses to conduct an energy-
saving diagnosis or ISO 14001 testing.
The measurement items are as shown below and are all measured
simultaneously.
• Voltage rms Each phase and mean
For three-phase three-wire : line-to-line voltage or phase voltage from
the virtual mid-point
For three-phase four-wire : phase voltage
• Current rms Each phase and mean
• Power value (active, reactive, and apparent)
Each phase and total
• Power factor Each phase and total
• Phase angle Each phase and total
• Frequency
• Electric energy(active, regenerative, lagging reactive, leading reactive)
• Power demand value
• Harmonics (1st to 50th order) Voltage rms, current rms, content,
phase angle, power value, power content,
and power phase angle
Indication is available as a list, bar graph,
and vector diagram.
• Voltage fluctuation Voltage dip, swell, momentary interruption
(Voltage quality) Data is saved by a threshold value-based
trigger.
• Waveform Voltage and current waveform, full-voltage
waveform, full-current waveform
Features
● Supporting a Variety of Wiring Methods
• Wiring
Single-phase two-wire, single-phase three-wire, three-phase three-wire two-
current, three-phase three-wire three-current, and three-phase four-wire
systems and Scott connection (three-phase three-wire and single-phase
three-wire)
• Loads
Single-phase two-wire systems can support up to four loads; single-phase
three-wire or three-phase three-wire two-current systems can support up to
two loads (shared voltage).
• Leakage current
In single-phase three-wire or three-phase four-wire systems, neutral line
current (leakage current) can also be measured.
Chapter 1 Product Overview
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