Product Description
Place of Origin: | Changsha, Hunan |
Brand Name: | Willfar Information Techonology Co., Ltd. |
Certification: | CCC、CB |
Model Number: | WFMB-M4 |
Minimum Order Quantity : | 100 |
Packaging Details : | Carton Packaging |
Delivery Time : | 30 days |
Payment Terms : | T/T |
Supply Ability : | 200 per day (based on the number of the order) |
Detail Information
Color: | White/Grey/Black | Brand: | Willfar Information |
Operating Humidity | 10% ~ 98% | Working Temp.: | -40~+75℃ |
Weight | 250A：8kg | Dimension | 250A：240mm×142mm×138mm |
High Light: | leakage protection circuit remote data concentrator | ||
Product Description
The product is designed to fulfill the application requirements of the modern power system for line monitoring, line protection, photovoltaic grid connection monitoring, and protection. It is equipped with advanced features like line monitoring, line protection, current leakage protection, anti-islanding protection, power quality monitoring, grid connection protection, directional protection, remote switch control, short circuit protection, and ground fault protection on both the photovoltaic generation and the grid side. Moreover, it also provides characteristic current sending and identification, temperature monitoring, self-diagnosis, power metering, and versatile communication options (HPLC, RS-485, Bluetooth, LORA). This product also supports external sensor integration, such as IoT locks, temperature and humidity sensors, smoke sensors, and others. Additionally, it ensures local and remote maintenance services.
Technical Parameters
Item | Technical Indicators |
In | 250A/400A/630A |
Current | Current Value Range：0.004In≤I<0.01In，Precision：±0.5%: Current Value Range:0.01In≤I≤Imax，Precision: ±0.3%。 |
Current Leakage | 50mA≤△I<100mA，Precision:土5mA 100mA≤△I≤2000mA，Precision:土2% |
Voltage | Voltage range:0.65Un≤△I≤1.2Un，Precision:土0.2% |
Power | Accuracy of Power Sum and Phase Forward and Reverse Active Power and Reactive Power In Current Range： 0.01In~0.05In，Precision:土1%; 0.05In~1.2In，Precision:土0.5%; 0.5L/0.8C Current Range: 0.02In ~0.1In，Precision:土1%; 0.1In~ 1.2In，Precision:土0.5%。 Total Power Factor Accuracy: measuring range:0.5-1.00，Precision:土0.005 |
Active Power | Sum and Phase forward and Reverse Active power, accuracy 0.5s, reactive power level 2 |
Communication Mode | HPLC, RS-485, Bluetooth communication, LORA |
Communication Protocol | Supports DL/T 645-2007 Communication Extension Protocol, DL/T 698.45-2017 Communication Extension Protocol, Optional Other Protocols |
Features
1) Enables electrical topology identification, current sensing and recognition features.
2) Incorporates anti-islanding protection that isn't reliant solely on inverter protection, disconnecting the connection between photovoltaic power generation and the low-voltage distribution network to thwart unintended islanding effects.
3) Provides electric energy quality monitoring, conducts analysis of grid voltage and current harmonics, assesses electric energy quality, and offers data for evaluating power generation quality.
4) Enables fault prediction, protection, and diagnosis of short circuits, grounding, undervoltage, and other issues on both the photovoltaic side and the grid side.
5) Implements live grid connection protection whereby the front breaker verifies the voltage of both incoming and outgoing ends. The breaker only shuts when grid-side voltage and frequency are within normal ranges and when there is no output voltage on the photovoltaic side, ensuring no live grid connection of the photovoltaic inverter.
6) Features residual current monitoring, automatic reclosing, and remote switching capabilities.
7) Utilizes RS485 or Bluetooth lock and sensors to read switch box status and environmental monitoring.
8) Facilitates multi-mode communication including HPLC, RS-485, integrated master-slave Bluetooth communication, and LORA.
9) Allows the setting and reading of switch location information utilizing RS485 or Bluetooth channel.
10) Equipped with switch body temperature and incoming/outgoing terminal temperature detection functions, and actively reports temperature limit events.
11) Features self-diagnostic capabilities, intelligent module self-checking, switch operation recording, contact wear, and life prediction analysis.
12) Utilizes modular design to support hot plugging, plug-and-play, interconnection, and intercommunication.
13) Incorporates an electricity theft analysis function, actively reading the energy meter, comparing it with its own energy, and reporting any electricity theft events.
