PLM33 - Fast transducer
PLM33 is converter of electrical values, which is used for distribution networks. Function of the device is monitoring of voltage and current trends in all phases. Furthermore, the device provides mentioned data to superior system, e.g. data logger, monitoring system, PLC, and so on. The PLM33 is equipped with 32 bits RISC processor, which provides quick calculations during real-time measurement. Actualization of measured values run in interval of 2 ms. It’s possible to read those values with PROFIBUS protocol.
- PROFIBUS DP-V1 and USB interface
- 3 voltage inputs, 3 current inputs and 1 separate voltage input
- Measured values are refreshed every 2 ms
- 24 VDC power supply
- U,I,P,Q, Frequency and Unbalace measurement
- Measured values and communication over PROFIBUS is possible to extend by manufacturer according to customer requirements
Function
PLM33 digitalizes signals of voltages and currents and from the samples computes every 2ms effective values of network. Computed values are immediately available on Profibus interface. Devise is also equipped with USB interface which is used for communication with computer software PLM33PC.
Measuring values
| Parameter | L1 | L2 | L3 | L1-2 | L2-3 | L3-1 | ∑L1-L3 | Measuring range | Displayed range | Accuracy |
|---|---|---|---|---|---|---|---|---|---|---|
| Phase voltage |  | | | | 1...300V | 0…750kV | 0.2% | |||
| Line volatge | | | | 1.73...520V | 0...1.3MV | 0.2% | ||||
| Frequency | | | | 40..70Hz | 40...70Hz | 10mHz | ||||
| Current | | | | | 10mA...13A | 0…750kA | 0.2% | |||
| CosΦ | | | | 0.01L...0.01C | 0.01L...0.01C | 1% | ||||
| Power factor | | | | | 0.01L...0.01C | 0.01L...0.01C | 1% | |||
| Active power | | | | | 0...3.9kW | 0...999GW | 0.2% | |||
| Reactive power | | | | | 0...3.9kvar | 0...999Gvar | 0.2% | |||
| Apparent power | | | | | 0...3.9kVA | 0...999GVA | 0.2% | |||
| Voltage asymmetry | | 1...300V | 0...750kV | 0.2% | ||||||
| Current asymmetry | | 10mA...13A | 0...750kA | 0.2% |
Technical parameters
| Parameter | Value |
|---|---|
| Power supply | 24 VDC |
| Burden | < 8 VA |
| Sampling rate | 6.4 kHz |
| Response time | 2.5ms (50Hz), 2.08 (60Hz) |
| Measuring accuracy | 1% (10 - 40Hz), 0.2% (40 – 70Hz), 1% (70 – 130 Hz) |
| Communication | PROFIBUS DP-V1, USB |
| Ambient temperature | -25...+70°C |
| Dimension | 157 x 86 x 60mm, DIN rail mounting |
| Weight | ca 300g |
| Related standards | EN61010-1,EN 62586-1, EN 6000-6-2, EN 61000-6-3 |