INT-1532L-5-M-000 TE Connectivity, INT-1532L-5-M-000 Datasheet - Page 49

• Manufacturer Part Number: INT-1532L-5-M-000
• Description: DIGITAL PANEL METER, 4-DIGIT, 57.7V TO 139V / 100V TO 240V
• Manufacturer: TE Connectivity

Specifications of INT-1532L-5-M-000

• No. Of Digits / Alpha: 4
• Meter Function: Digital
• Meter Range: 0mA To 20mA
• Digit Height: 96mm
• Supply Voltage Range: 57.7V To 139V / 100V To 240V
• Power Consumption: 3W
• Rohs Compliant: NA

Glossary of Measurement Terminology
RMS
Abbreviation for Root Mean Square, a measurement and calculation technique for
accurately determining current and voltage values, taking into consideration the ac wave
shape and any harmonic distortion content. True rms measurements always ensure
accurate readings regardless of the wave shape.
THD
Abbreviation for Total Harmonic Distortion, a measurement of power quality, usually
expressed as a percentage. The lower the THD figure, the better the supply. High THD
levels can interfere with the normal operation of equipment. Some electrical loads
introduce distortion back into the supply network, which can affect all other connected
equipment. Measuring and monitoring the THD level is recommended to avoid levy
charges imposed by some power utilities on industrial consumers who introduce
distortions to the supply.
System volts
At a glance indication of the nominal system primary voltage (potential difference) is
correct. The average of up to three voltage phases is displayed, so the loss of one or
more phase voltages will result in a significantly lower reading.
Volts per phase
Individual measurement and display of each phase voltage, allowing the user to identify
the loss of any phase due to a fault or failed fuse. Close matching of the phase voltages
can be monitored, as an unbalanced supply voltage by as little as 10% can increase
three-phase motor operating temperature to 150% of normal.
System amps
At a glance indication of the nominal system primary current, displaying an average of
up to three phase currents. The loss of one or more phase currents will result in a
significantly lower reading.
Amps per phase
Individual measurement and display of each phase current allowing the user to identify
the loss of any phase due to a fault or failed fuse. Essential information for monitoring
single-phase conditions on three-phase motors.
Neutral current
The neutral conductor usually operates with minimal voltage to ground, and may carry
anunbalanced load current. Neutral current should be measured and monitored if
harmonic distortion is present within the system, since it is possible that up to 173% of
the rated phase current could flow back into the neutral conductor.
AD
Abbreviation for Amps Demand. Demand is the rate at which energy is used, and the
measurement is averaged over an adjustable demand interval. This ensures short
periods of intense use, such as motor start-up, have minimal impact on readings.
Instantaneous load currents can be difficult to read when fluctuating, so an averaged
demand figure is useful for checking that operations are within the capability of the
switchgear and cables.
Max AD
Abbreviation for Maximum Amps Demand, a record of the highest amps demand value.
Power utilities often levy charges on the basis of maximum demand for each billing
period. Monitoring the maximum demand reading allows management to consider
disconnecting some non-essential loads at certain times to avoid this cost penalty.
PF
Abbreviation for Power Factor, the ratio of real power (kW) to reactive power (kVAr) or
apparent power (kVA). A unity power factor (1.0) indicates that the current is in phase
with the voltage and that reactive power is zero. The reading can be inductive or
capacitive, depending on the type of load. An adverse power factor could be due to
faulty capacitors within correction equipment or to harmonic distortion.
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