This manual describes the features, installation, configuration, testing and operation of the Four Faith JYW-FF/HD overhead remote fault indicator.
The Four Faith JYW-FF/HD is an overhead remote fault indicator designed for distribution network fault location. It consists of a collection unit (汇集单元) and a measurement unit (采集单元) that detect short‑circuit, ground‑fault and load current, and report the information to a central station via GPRS/3G/4G or RF433 communication.
The document is organized into four main chapters: product overview, configuration and testing, data‑transmission test procedures, and appendices with installation guidelines and record forms. It provides detailed wiring diagrams, parameter settings, software usage (FaultIndicator.exe), and field‑testing steps to ensure proper operation. This manual is written in Chinese.
| Collection unit dimensions | 360 mm × 280 mm × 70 mm |
|---|---|
| Backup power (collection unit) | DC 12 V, 7800 mAh |
| Solar panel open‑circuit voltage | 21.6 V |
| Solar panel peak voltage | 18 V |
| Solar panel peak current | 0.56 A |
| Solar panel peak power | 10 W |
| IP rating (measurement unit) | IP68 |
| IP rating (collection unit) | IP55 |
| Operating temperature range | -40 °C ~ 70 °C |
| RF communication frequency | 433 MHz |
| RF communication distance | < 50 m |
| Static power consumption (measurement unit) | ≤ 20 µA |
| Static power consumption (collection unit) | ≤ 0.2 VA |
| Mean time between failures | ≥ 70 000 h |
| Maximum number of measurement units per collection unit | 3 (expandable to 9) |
A collection unit can connect up to three measurement units, and it can be expanded to support up to nine units.
The device operates from –40 °C to 70 °C.
The RF communication uses the 433 MHz band with a range of less than 50 meters.
Run the FaultIndicator.exe software on a PC, fill in the IP address and port in the GPRS settings, then click Save.