SJY-1X (SJY-11/SJY-12) insulation monitoring device is an upgraded product of SJY-1. It adopts new microcontroller and display chip technology, with small size, suitable for use in distribution panels in ships, mines, metallurgy, medical and other fields, and monitors the ground insulation of AC power grid (ungrounded power grid with transformer isolation from mains power).
The SJY-11/SJY-12 grid insulation monitoring instrument is designed for real‑time monitoring of ground insulation resistance on ungrounded AC power systems, suitable for shipboard, mining, metallurgical and medical distribution panels. It uses a new microcontroller and display chip, offering a compact size and the ability to monitor one or two independent networks.
The manual provides system description, technical specifications, panel layout, step‑by‑step operating procedures, alarm setting, reset and confirmation functions, as well as safety precautions for installation and use in harsh environments. This manual is written in Chinese.
| Power supply voltage | 220 VAC |
|---|---|
| Input voltage range | up to 440 V (660 V with accessory) |
| Output relay rating | 1 A @ 240 VAC, normally open |
| Power consumption | 3 W |
| Operating temperature | 0 °C ~ 45 °C |
| Protection rating | IP21 |
| Display range | 0.000 ~ 9.999 MΩ |
| Weight | 0.9 kg |
| Dimensions (H×W×D) | 96 mm × 96 mm × 110 mm |
| Installation opening size | 91 mm × 91 mm |
| Ship certification | CCS ship certification |
No. It must not monitor grounded or shore power grids; when a ship uses shore power, the instrument’s power must be disconnected.