Low voltage feeder monitoring device - communication unit
1.Product profile
The low-voltage feeder monitoring device consists of a communication unit, a power module, and a monitoring unit. The communication unit is generally installed in the distribution cabinet, column mounted JP cabinet, or low-voltage cable branch box. It serves as a data aggregation gateway to achieve upstream communication through carrier modules, communicate with downstream monitoring units through CAN bus, and achieve local maintenance of the system through Bluetooth interface. The number of monitoring units that can be connected is not less than 64; The power module provides DC power, CAN bus, and sampling voltage to the monitoring unit through a cascaded interface. A single power module can be connected to no less than 10 monitoring units; The monitoring unit is connected to an external current transformer to achieve current detection function, connected to the voltage sampling signal output by the power module to achieve voltage detection function, connected to a switch input to achieve station status monitoring, with functions such as topology characteristic signal transmission, characteristic signal analysis, and phase sequence recognition.
2.Product specifications
| performance parameters |
performance indicators |
| Operating power supply |
Rated voltage |
AC 220V (allowable deviation -30%~+40%). |
| Power consumption |
Static power consumption: ≤2VA, active power ≤1.5W |
| Dynamic power consumption: ≤4VA, active power ≤3W |
| environmental conditions |
ambient temperature, humidity |
Temperature range: -40~+70°C |
| Maximum rate of temperature change: 1.0°C/min |
| Relative humidity: 10 to 100% |
| Maximum absolute humidity: 35g/m³ |
| the environment in which it is used |
There is no danger of explosion, no corrosive gases or conductive dust, no presence of severe mold, and no source of severe vibration or shock. |
| storage temperature |
-40ºC~80ºC |
| Clock |
Daily error |
The internal clock accuracy shall be better than 0.5s/d, the |
| Accuracy |
| Maintenance |
parameter reading, remote upgrading |
Equipped with the function of parameter reading and modification through Bluetooth and RS485 communication interface. |
| with the ability to upgrade itself and its access equipment locally and remotely |
| It has the functions of adding and deleting access devices, as well as querying and modifying access device parameters. |
| Reset |
Hardware |
Press and hold (>3s) the reset button for hardware reset, the |
| Software |
software remote reset |
3.Selection specifications
| function module |
Serial number |
function point |
function point descriptions |
communication module |
| Telemetry |
1 |
Incoming and outgoing |
With 4-way open-in telemetry status |
√ |
| communication interface |
2 |
CAN communication |
Standard configuration of 1 road for the lower cascade multiple power modules, transmission downlink monitoring unit support through the CAN interface to achieve online upgrade program |
√ |
| 3 |
debugging interface |
Support 1 RS485 interface for product debugging |
√ |
| 4 |
Bluetooth interface |
Supporting the maintenance of communication units and monitoring units through the Bluetooth interface |
√ |
| 5 |
HPLC interface |
Supporting the maintenance of communication units and monitoring units through the carrier interface |
√ |
| Output |
6 |
DC Output |
Provide DC12V±0.5V power output interface externally, with load capacity not less than 300mA |
√ |
| Note: "√" indicates that this function is standard, "○" indicates that this function is optional |
4.Product installation and schematic diagram
5.About our service
* We could provide 7* 24-hour phone call after-sales service.
* We provide a 2-year guarantee time and will change the meter for you within 1 year if there's something wrong with the product. Except for natural disasters or man-made reasons.
* Recommend the most advanced application technology and management model in the industry to customers, and provide customers with detailed solutions.
6.Package and ship
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