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Woodward UMT145B A3 LR20523 Measuring Transducer

Woodward UMT145B A3 LR20523 Measuring Transducer

INDUSTRIAL ELECTRICAL MEASUREMENT
UMT145B A3
LR20523
UMT 1 Measuring Transducer
 
True RMS measuring transducer for industrial electrical monitoring, configured for 230/400 Vac measurement, 5 A CT input and three configurable analog outputs.
VOLTAGE
230 / 400 Vac
CURRENT
5 A CT
MEASUREMENT
True RMS
OUTPUT
3 Analog
VOLTAGE
230 / 400 Vac
CURRENT INPUT
5 A CT
MEASUREMENT
True RMS
OUTPUT
3 Analog
VOLTAGE
230 / 400 Vac
CURRENT INPUT
5 A CT
MEASUREMENT
True RMS
PACKAGE
A3 · 3 Outputs
PRODUCT OVERVIEW
UMT145B A3 LR20523
 
The UMT145B A3 LR20523 belongs to the UMT 1 family of measuring transducers. It measures electrical voltage and current using True RMS processing and calculates additional values including frequency, active power, reactive power, apparent power and power factor. The A3 package provides three configurable analog outputs.
MODEL
UMT145B / A3
Voltage code 4 230 / 400 Vac
Current code 5 5 A CT secondary
Mounting B Flush mounting
Package A3 3 configurable analog outputs
Technical Specifications
Rated Measuring Voltage 230 / 400 Vac
Current Input 5 A CT Secondary
Measuring Frequency 40.0 – 80.0 Hz
Voltage Accuracy Class 0.5
Current Accuracy Class 0.5
Power Supply 24 Vdc (18 – 30 Vdc)
Operating Temperature -20 to +70 °C
Dimensions 96 × 72 × 130 mm
Weight Approx. 800 g
3
Analog Outputs
A3 Output Package
-20 to +20 mA
0 to 20 mA
4 to 20 mA
12-bit PWM resolution · Maximum current-output load 500 Ω
Measured Electrical Values
Voltage Current Frequency Power Factor
Active Power Reactive Power Apparent Power Energy
Replacement Note
A physically similar UMT 1 unit is not automatically a direct replacement. Before replacing UMT145B A3 LR20523, verify the 230/400 Vac version, 5 A CT secondary, A3 analog-output configuration, measuring-system wiring and existing parameter settings.
FAQ
UMT145B A3 LR20523 FAQ
What voltage and current configuration does UMT145B A3 LR20523 use?
UMT145B uses the 230/400 Vac measuring version and a 5 A current-transformer secondary. Both ratings should be checked before selecting a replacement unit.
What does A3 mean on UMT145B A3 LR20523?
The A3 package provides three configurable analog outputs. Selected electrical measurements can be assigned to these channels.
Which analog output ranges can UMT145B A3 LR20523 use?
The documented current-output ranges include -20 to +20 mA, 0 to 20 mA and 4 to 20 mA. Output assignment and scaling should be recorded before removing an installed unit.
Can another UMT 1 with the same dimensions replace UMT145B A3 LR20523?
Not necessarily. Physical dimensions alone do not confirm compatibility. The voltage version, CT secondary, mounting type, output package and configuration must also match the existing application.
What should be checked before removing UMT145B A3 LR20523?
Record the existing nameplate information, CT ratio, measurement configuration, analog-output assignments and parameters. Current-transformer secondary circuits should also be handled according to the required electrical safety procedure.
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About Amikon
Amikon Technology was established in Hong Kong in 2005. Our supply range covers PLC, HMI, DCS, industrial controllers, industrial PCs, VFD components and other automation spare parts. With more than 50 professional team members, we continue to focus on quality, reliability and responsive customer service.
We help keep global production running.
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