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- Overview
- Specifications
- Description
- Applications
- Commissioning Procedure
- LEDs
- FAQ
- Recommended Products
Overview
Place of Origin: |
USA |
Brand Name: |
Woodward |
Model Number: |
UMT1 UMT145B/NSU LR21131 |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
5-7 days |
Payment Terms: |
T/T |
Supply Ability: |
In stock |
Specifications
|
Model |
UMT1 UMT145B/NSU LR21131 |
|
Product Type |
Multi-Channel Measuring Transducer |
|
Dimensions |
10 × 15.5 × 7.2 cm |
|
Weight |
0.58 kg |
|
Voltage Measuring Rated Value (Low) |
66/115 Vac |
|
Voltage Measuring Rated Value (High) |
230/400 Vac |
|
Voltage Measuring Maximum (Low) |
150 Vac |
|
Voltage Measuring Maximum (High) |
300 Vac |
|
Voltage Measuring Rated Voltage (Low) |
150 Vac |
|
Voltage Measuring Rated Voltage (High) |
300 Vac |
|
Voltage Measuring Surge Voltage (Low) |
2.5 kV |
|
Voltage Measuring Surge Voltage (High) |
4.0 kV |
|
Measuring Frequency |
40.0 to 80.0 Hz |
|
Accuracy |
Class 0.5 |
|
Linear Measuring Range |
1.3 × Vrated |
|
Input Resistance |
0.21 MΩ |
|
Max Power Consumption per Path |
0.15 W |
|
Power Supply |
24 Vdc (18 to 30 Vdc) |
|
Intrinsic Power Consumption |
Max. 10 W |
|
Operating Temperature |
–20 to +70 °C |
|
Storage Temperature |
–30 to +80 °C |
|
Ambient Humidity |
95% non-condensing |
|
Analog Outputs Type |
Isolated |
|
Analog Output Scaling |
Freely scalable at rated value |
|
Analog Output Insulation Voltage |
1,500 Vdc |
|
Analog Output Resolution |
PWM 12-bit |
|
Analog Output Load (4–20 mA) |
Max. 500 Ω |
|
Pulse Output Type |
Transistor output |
|
Pulse Output Rated Gate Voltage |
24 Vdc |
|
Pulse Output Maximum Gate Voltage |
32 Vdc |
|
Pulse Output Minimum Gate Current |
10 mA DC |
|
Pulse Output Maximum Gate Current |
30 mA DC (0.5 Vdc) |
|
Interface Type |
Isolated |
|
Interface Insulation Voltage |
500 to 1,500 Vdc (model dependent) |
|
Wiring Type |
Screw-type terminals (1.5 mm² or 2.5 mm²) |
|
Certifications |
CE marking; UL/cUL listed (ordinary locations) |
Description
The WOODWARD UMT1 UMT145B/NSU LR21131 is a multi-channel measuring transformer for true RMS values. The transformer can measure an electrical three-phase system with current and voltage measuring inputs. The primary measured values are calculated and displayed on the two-line, 16 character LC Display, and also transmitted by either analog outputs or a communication interface to a higher level-control system.
Applications
Power Plants: Monitor multi-channel generator and bus electrical parameters.
Substations: Collect voltage, current, and power data from multiple bus sections.
Petrochemical Plants: Track electrical load in process distribution networks.
Steel Plant Power Stations: Convert multi-channel parameters for grid and waste heat systems.
Water Plants: Monitor RMS operating status of high-voltage pump motors.
Commissioning Procedure
1. After wiring the unit and ensuring all voltage-measuring devices are phased correctly, apply the control system voltage (i.e. 12/24 Vdc). The "Operation" LED will illuminate.
2. After applying the measured variables, the unit will display the measured values. These values should be confirmed with a calibrated measuring instrument.
3. By simultaneously pressing the two push buttons "Digit↑" and "Cursor→", the configuration mode is accessed. After entering the access code number, the unit may be configured according to the application requirements (see the chapter regarding the parameters).
LEDs
1 "Wye",Color: Yellow--Indication of the wye voltages
If this LED is illuminated, the values indicated on the display are the wye (star) voltages (phase-neutral).
2 "Delta",Color: Yellow--Indication of the delta voltages
If this LED is illuminated, the values indicated on the display are the delta voltages (phase-phase).
3 "Operation ",Color: Green--Operation
This LED is illuminated constantly when the control unit is in the Automatic mode. If this LED is flashing, the control is in the configuration mode.
FAQ
Q: What is the measurement accuracy class of UMT1 UMT145B/NSU LR21131?
A: The measurement accuracy is Class 0.5.
Q: What is the operating temperature range of UMT1 UMT145B/NSU LR21131?
A: The operating ambient temperature range is -20 to +70°C.
Q: What is the maximum analog output load at 4–20 mA for UMT1 UMT145B/NSU LR21131?
A: The maximum analog output load is 500 Ω.
Q: What type of pulse output does UMT1 UMT145B/NSU LR21131 use?
A: It uses a transistor output type.
Q: What wiring method is used for UMT1 UMT145B/NSU LR21131?
A: It uses screw terminal wiring supporting 1.5 mm² or 2.5 mm² conductors.
