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EnerLyzer is a software option for the CMC 256/256plus and the CMC 356 with ELT-1 hardware option, enabling powerful analog measurement functions. With this option, each of the ten binary inputs can be reconfigured for use as analog measurement inputs. Thus a CMC test set together with EnerLyzer becomes a multifunctional measurement and recording unit.
EnerLyzer can be used concurrently with any active Test Universe test module.
Voltages of up to 600 Vrms can be measured. Alternatively, currents can also be measured by using current clamps with voltage outputs or measurement shunts. Five measurement ranges make use of the optimal accuracy, matching the signals to be measured. The measurement data can be displayed as secondary or primary values. Results can be summarized in a measurement report.
Multimeter
Multimeter
In this mode, all ten inputs can either be used as voltage or as current inputs. Ac or dc values can be measured. For ac, two different frequencies can be determined (e.g. generator/network).
EnerLyzer displays the following quantities:
- rms value and phase for V, I (ac)
- Symmetrical components
- Line-to-line voltage
- Two frequencies
- Active, reactive, and apparent power per phase and three-phase
- cos phi
- dc values for voltage, current and power
Harmonic analysis
Harmonic analysis
This mode allows the on-line analysis of a signal up to the 64th harmonic (at 50/60 Hz).
- EnerLyzer displays the following quantities:
- rms value and phase of the fundamental
- Frequency, rms value and THD of the overall signal
- rms value and phase of the harmonic
Signals can also be captured using a "snapshot” function and displayed graphically.
Transient recording
Transidient Recording, Triggers
With EnerLyzer, the CMC 256/256plus or CMC 356 with ELT-1 hardware option can be used as a powerful 10 channel transient recorder. The maximum recording time depends on the sampling rate and on the number of channels to be recorded (one channel recorded at 3 kHz yields a recording time of over 5 min.). Each recording is stored in COMTRADE format. Sampling rate, pre-trigger time and recording time can be set for each recording.
Recording may be triggered manually or by a defined trigger. This can be a certain voltage, current or binary level with rising or falling slope, or a certain power quality phenomena.
Power Qualitiy Triggers
Power Quality Triggers
- Different power quality criteria can be combined to trigger signal recording:
- Swell & Sag triggers: Trigger when a certain swell or sag occurs in a certain channel.
- Harmonic: Triggers when either a certain harmonic or the total harmonic distortion exceed a certain level specified as a percentage of the nominal value.
- Frequency: Triggers when the frequency goes outside the specified deviation of the nominal frequency in Hertz.
- Frequency Change: Triggers when the rate of change of frequency exceed the specified rate.
- Notch: Triggers after a certain number of notches of a certain duration and amplitude occur.
Trend Recording
Trend Recording
- Records the following quantities over time:
- Frequency 1 (any channel)
- Frequency 2 (any channel)
- Currents (rms value)Voltage (rms value)Phase anglesReal power (single and three phase)
- Reactive power (single and three phase)
- Apparent power (single and three phase)
- cos phi
Each type of quantity (e.g. frequencies, currents, or real powers) is displayed in a separate diagram over time.
The amount of samples in all charts together is limited to 4 million. If the limit is exceeded recording is continued and the oldest samples are removed from the chart. Measurements over a very long period of time are possible by choosing a large measurement rate - setting a rate of 10 s will allow a continuous measurement over several weeks. Visualization and in-depth analysis of transient recordings can be performed with TransView provided with EnerLyzer. Replaying of transient recordings is possible using either Advanced TransPlay or TransPlay.
EnerLyzer supports the binary input/output unit CMB IO-7.