The SCYC-HLJC2304 is a high-performance intelligent monitoring terminal designed to safeguard high-voltage power networks. By integrating advanced sensors for sheath circulating current, partial discharge (PD), and temperature monitoring, it provides utilities with a 24/7 “health check” for critical cable infrastructure. Built to thrive in harsh environments, it is the ideal choice for underground tunnels and complex power transmission systems.
Key Highlights:
- Comprehensive Monitoring: Real-time tracking of PD signals, circulation current, load, temperature, and vibration.
- IP68 Protection: Fully encapsulated in a stainless steel casing, ensuring reliable operation even when submerged in water or buried in trenches.
- Energy Autonomy: Features advanced CT induction powering technology—drawing energy directly from the cable (starts at >25A).
- Smart Connectivity: Built-in 4G/LTE, Fiber Optic, and RS485 communication supporting global industrial protocols (Modbus RTU/TCP).
Technical Resources:
Get the full details. Our comprehensive product manual includes detailed wiring diagrams, software interface previews, and full technical specifications.
Manufacturing & Global Sales:
This product is professionally manufactured by Sichuan Yachen Electric Co., Ltd. (est. 2004), a technology leader in EMP protection and power monitoring based in China’s “City of Science and Technology,” Mianyang.
International Partnership: To provide seamless support for our global customers, Sichuan Yachen Electric Co., Ltd. has officially authorized Qingdao Britop International Trading Co., Ltd. (BRITOP) to act as its exclusive representative for international markets. BRITOP oversees all global marketing, distribution, and technical inquiries.
Contact Our Global Team:
- Partner: Qingdao Britop International Trading Co., Ltd.
- Contact: Bright Meng (Global Sales Director)
- Email: britop@qdbritop.com
- Web: https://qdbritop.com
- WhatsApp/WeChat: +86 13811458455
The Power Cable Sheath Circulation
And Partial Discharge Integrated Online monitoring device consists of a monitoring host, current transformers, partial discharge sensors, temperature sensors, and anti-theft sensors. Open-type current transformers are installed on the cable sheath grounding wire and the main cable, converting the signal into a secondary signal before introducing it into the monitoring device. Temperature sensors are used to monitor cable temperature, and anti-theft sensors monitor the circulating grounding wire for anti-theft operations.
The Power Cable Sheath Circulation
And Partial Discharge Integrated Online monitoring device consists of a monitoring host, current transformers, partial discharge sensors, temperature sensors, and anti-theft sensors. Open-type current transformers are installed on the cable sheath grounding wire and the main cable, converting the signal into a secondary signal before introducing it into the monitoring device. Temperature sensors are used to monitor cable temperature, and anti-theft sensors monitor the circulating grounding wire for anti-theft operations.
All of the above monitoring interfaces can be added or removed according to customer needs.
The grounding current detection transformer and the partial discharge monitoring transformer are installed on the grounding wire;
The operating current transformer is installed on any phase of the main cable (the current in the three-phase main cable is balanced).
A temperature sensor is installed at the cable joint to measure the joint temperature.
The anti-theft and cutting detection device is installed on the grounding wire;
The CT power supply is installed on the main cable for easy power access.
Power Cable Sheath Circulation And Partial Discharge Integrated Online monitoring device–Features
- ( 1 ) Real-time monitoring of the sheath grounding current, total grounding current and operating current of any phase main cable of the three-phase cable;
- ( 2 ) Real-time monitoring of the temperature of the three-phase cable joints;
- ( 3 ) Real-time monitoring of the anti-theft and anti-cutting of cable sheath grounding wire;
- ( 4 ) Real-time monitoring of partial discharge in three-phase cables;
- ( 5 ) The monitoring time interval can be set;
- ( 6 ) Alarm parameters and whether to allow corresponding monitoring parameters to generate alarms can be set;
- ( 7 ) Calculate the maximum, minimum, and average values within the set time period;
- ( 8 ) Monitor the ratio of the maximum and minimum values of single-phase grounding current within the statistical period in real time and perform alarm processing;
- ( 9 ) Monitor the ratio of grounding current to load in real time within the statistical period and perform alarm processing;
- ( 10 ) Monitor the rate of change of single-phase grounding current within the statistical period in real time and perform alarm processing;
- ( 11 ) All monitoring data have time tags to ensure the uniqueness of the data;
- ( 12 ) All monitoring sensors can be added or removed according to user requirements;
- ( 13 ) Multiple data transmission interfaces: RS485 interface, GPRS , GSM SMS,One or more data transmission modes can be used simultaneously;
- ( 14 ) Supports remote maintenance and upgrades;
- ( 15 ) It adopts a low-power design and supports multiple power supply methods: CT induction power supply,AC-DC power supply, DC power supply and battery power supply;
- ( 16 ) All components are industrial grade, with good reliability and stability;
- ( 17 ) The modular, fully enclosed structure design is easy to install, and all components are secured with locking mechanisms.
- It has good vibration resistance and is easy to replace and disassemble;
- ( 18 ) Fully enclosed structure: epoxy resin enclosed, no exposed components, no water ingress, perfectly supports IP68 protection level.
- ( 19 ) High reliability and maintenance-free.
| Category | Parameter | Specification |
| Current Measurement | Operating Current | 1 channel, 0.1A~3000A (Customizable) |
| Sheath Grounding Current | 4 channels, 0.1A~300A (Customizable) | |
| Return Line Current | 1 channel, 0.1A~300A (Customizable) | |
| Accuracy | Measurement error not exceeding ±(1% of reading + 0.5A) | |
| Measurement Cycle | 1s~260s (Configurable) | |
| Partial Discharge | PD Interface Qty | 4 channels sync detection (Phase A, B, C + 1 Power Frequency) |
| Bandwidth | 0.1 ~ 50MHz | |
| Min. Discharge | 5pC | |
| AD Resolution | 14-bit | |
| Temperature | Range | 4 channels, -40°C~+130°C |
| Accuracy | ± 1°C; Response time (PT100) is 1 min 10 s | |
| Measurement Cycle | 10s~260s (Configurable) | |
| Others | Sensor disconnection detection; RS-485 transmission | |
| Vibration | Range | 4 channels, freq. 1 ~500 times/sec |
| Alarm Range | 10~250 times/sec (Configurable) | |
| Alarm Duration | 1~600s (Configurable) | |
| Others | Sensor disconnection detection | |
| Voltage Monitoring | Induced Sheath Voltage | 3 channels, 0~500V (Customizable) |
| Test Item | Level & Standard |
| Electrostatic Discharge | Level 4 : IEC 61000-4-2 (Equivalent to GB/T 17626.2) |
| Radiated RF Immunity | Level 3 : IEC 61000-4-3 (Equivalent to GB/T 17626.3) |
| EFT/Burst Immunity | Level 4 : IEC 61000-4-4 (Equivalent to GB/T 17626.4) |
| Surge Immunity | Level 4 : IEC 61000-4-5 (Equivalent to GB/T 17626.5) |
| Conducted RF Immunity | Level 3 : IEC 61000-4-6 (Equivalent to GB/T 17626.6) |
| Power Frequency Magnetic Field | Level 5 : IEC 61000-4-8 (Equivalent to GB/T 17626.8) |
| Pulse Magnetic Field | Level 5 : IEC 61000-4-9 (Equivalent to GB/T 17626.9) |
| Damped Oscillatory Magnetic Field | Level 5 : IEC 61000-4-10 (Equivalent to GB/T 17626.10) |
| Voltage Variations Immunity | Level 3 : IEC 61000-4-11 (Equivalent to GB/T 17626.11) |
Stainless steel enclosure:
All components were encapsulated with epoxy resin.Uses highly reliable waterproof aviation connectors.
high-voltage cable monitoring, partial discharge sensor, sheath circulating current, online monitoring device, SCYC-HLJC2304, Sichuan Yachen Electric, power grid reliability, IP68 waterproof monitoring.
