KES 3xSingle-Phase
http://www.zennio.com Technical Support: http://zennioenglish.zendesk.com
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Hereafter, this user manual will only refer to the KES 3xSingle-Phase application
program, intended for single-phase systems. The specific user manual for the KES
1xThree-Phase application program, intended for three-phase systems, may be
downloaded from the http: //www.zennio.com website.
2CONFIGURATION
2.1 ACTIVE POWER
KES 3xSingle-Phase calculates the value of the active power consumed by the
device whose phase line passes through the ZN1AC-CST60 probe, connected to one
of the KES channels. This active power is obtained from the effective intensity
measured by the probe according to the following relation:
𝑃𝑎𝑐𝑡 =𝑉
𝑒𝑓 ·𝐼𝑒𝑓 ·𝑃𝐹
where 𝑉
𝑒𝑓 is the effective voltage of the line and FP is the power factor (which, as a
general rule, is ideally assumed to be the equal for the whole installation). Both values
must be defined by parameter. The value of the effective intensity, 𝐼𝑒𝑓, is obtained, as
stated above, by placing the measuring probes around the electric line, and by
connecting the outputs of the probe into one of KES input slots.
Each measuring probe, and consequently KES, is capable of measuring effective
intensities in the range [300 mA - 60 A], which in a 230v single-phase environment with
a power factor of 100%, would correspond to [69 W – 13,8 kW].
Once beyond the aforementioned 300 mA, the resolution in the measurement of the
instant power is determined by the DPT of the 2-byte floating-point object used to
transmit the value to the bus (0.01 kW).
In addition to measuring instant active power, KES can also monitor the highest
detected power, so that power peaks can be calculated per hour, day, week and
month, which may be interesting for monitoring historic values.
