According to the field application experience of multi-function electric power meter, the following pain points and difficulties are found:
1. Most multi-function electric power meters used in distribution field are digital tube and pen segment liquid crystal display.
2. The phase sequence of multi-function electric power instrument is wrong because of the reason of complete sets of factory or field wiring.
3. because of design reasons, usually before the voltage acquisition, the installation of Insurance, fuse, resulting in open phase, electricity reduction.
4. on-site troubleshooting long time, component manufacturers and complete sets of manufacturers quarrel.
Based on the customer's pain point and difficulty, the company has developed and produced the BRM series multi-function electric power meter, it has the following functions:
1. all Chinese DOT MATRIX LCD display
2. according to the pre-set procedure to automatically determine phase sequence error, phase break and automatic message alarm.
3. to achieve overload and overcurrent trip
4. in the complete set of technology to the bottom, the proposed voltage collection without insurance, require 4P circuit breaker, thus reducing the occurrence of open phase.
5. The use of the product breaks the problem of incomplete characters in traditional digital tube or pen segment LCD display, greatly speeds up the on-site troubleshooting efficiency, and makes clear the responsibility of the responsible parties, let the non-professional personnel can clearly identify the various parameters of the multi-function electric power meter, make the complex problem simple. In particular, the phase sequence error, broken phase message alarm function, so that staff find the problem immediately, effectively solve the phase sequence error, broken phase caused by the power metering error.
The company's multi-functional power meter main chip using STMicroelectronics ST32, with 4 voltage (three-phase three-wire, three-phase four-wire can be set according to actual use) , 3-way input, 2-way open relay, CT PT free settings, double 485 communication, mobus communication protocol.
The company's multifunctional electric power meter has obtained the Cape Laboratory type test report and the model use registration certificate, applied for the utility model patent according to some important functions of this product, and obtained the utility model patent certificate.