Product Short Description
Product Introduction
The GE H201Ci-1 is a single-channel controller within the HYDRAN 201i Series, specifically engineered to supervise one Hydran 201Ti intelligent transmitter and act as the interface between the transmitter and a host computer or SCADA system for transformer oil health monitoring. It serves as a critical component in power transformer maintenance, continuously tracking dissolved fault gases (e.g., H₂, CO, C₂H₂, C₂H₄) in transformer oil to detect incipient faults like partial discharge, overheating, and arcing. The controller features a NEMA 4X (IP66) heated instrument cabinet, a numerical display showing gas levels in ppm, two gas alarm contacts (High/High-High), one fail alarm contact, an isolated 4–20 mA analog output, and illuminated push-button alarm indicators. It operates on 90–132/180–264 VAC power, integrates with RS-485 Modbus RTU networks for remote monitoring, and supports a 0–2000 ppm range for gas concentration measurement. The H201Ci-1 complies with EN 50082-1 immunity standards and Electromagnetic Compatibility Directive 89/336/EEC, ensuring reliable performance in high-interference substation environments. It enables early fault detection, reducing unplanned downtime and extending transformer service life in power generation, transmission, and distribution applications.
Description
Technical Specifications
| Parameter | Details |
|---|---|
| Brand | GE (HYDRAN 201i Series, Grid Solutions) |
| Model | H201Ci-1 (Single-Channel Controller) |
| Product Type | Dissolved Gas-in-Oil Monitoring Controller |
| Compatible Transmitter | Hydran 201Ti Intelligent Dissolved Gas Transmitter |
| Power Supply | 90–132 VAC / 180–264 VAC, 50/60 Hz; 25 VA max power consumption |
| Enclosure | NEMA 4X (IP66) Heated Instrument Cabinet, Weatherproof/Explosion-Proof Option |
| Display | 7-Segment Numerical Display (Shows Gas Level in ppm) |
| Analog Output | 1 Isolated 4–20 mA Output (0–2000 ppm Range); 1000 Ω max load |
| Alarm Contacts | 2 Gas Alarms (High/High-High, SPST, 5 A @ 250 VAC); 1 Fail Alarm (SPST, 5 A @ 250 VAC) |
| Indicators | 2 Illuminated Push-Buttons (Alarm Status); Audible Alarm Buzzer |
| Communication Interfaces | RS-485 (Modbus RTU, Daisy-Chainable to 32 Controllers); 1300 m Max Network Length; 3000 V Opto-Isolated Supervisory Link to 201Ti (1300 m Max) |
| Measurement Range | 0–2000 ppm (Dissolved Gas-in-Oil, Composite Value from 201Ti) |
| Operating Temperature | Controller Electronics: -20°C to +60°C; Transmitter (201Ti): -40°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 0%–100% RH (Non-Condensing) |
| Weight | 23.25 lbs (10.5 kg) (Standard Enclosure) |
| Dimensions | 23.0 in × 13.0 in × 11.5 in (584 mm × 330 mm × 292 mm) |
| Compliance | EN 50082-1 (EMI/RFI Immunity); Electromagnetic Compatibility Directive 89/336/EEC; CE, UL, CSA |
Functional Features
- Single-Channel Transmitter Supervision: Dedicated to one Hydran 201Ti, ensuring focused monitoring of a single transformer unit for precise fault detection.
- Dual Gas Alarms: High and High-High alarm setpoints trigger local/remote alerts for abnormal gas concentration increases, enabling rapid response to incipient faults.
- Fail-Safe Alarm Contact: Activates during power loss, communication failure, or transmitter malfunctions, ensuring system integrity and operator awareness.
- Isolated Analog Output: 4–20 mA signal transmits gas concentration data to SCADA/PLC systems, with zero output on system faults for clear fault indication.
- NEMA 4X Heated Enclosure: Protects electronics from dust, moisture, and extreme temperatures, maintaining operation in outdoor and coastal substations.
- Illuminated Alarm Indicators: Front-panel push-buttons provide visual status of active alarms, with manual acknowledgment for operator convenience.
- RS-485 Network Integration: Daisy-chains up to 32 controllers, supporting centralized monitoring of multiple transformers via Modbus RTU protocol.
- 3000 V Opto-Isolation: Supervisory link to 201Ti prevents ground loops and voltage surges, ensuring safe communication in high-voltage substation environments.
- Heated Cabinet: Prevents condensation in cold climates, maintaining measurement accuracy and extending component life.
- Automatic Fault Response: Sets analog output to zero and blanks the display during system failures, providing clear fault indication to host systems.
- Simple Maintenance: Single electronic circuit board design simplifies troubleshooting, replacement, and upgrades without system reconfiguration.
- Compliance with Industry Standards: Meets EN 50082-1 for immunity to RF emissions and fast transients, ensuring reliable performance in high-interference environments.
Application Scenarios
- Power Transformer Monitoring: Tracks dissolved gas levels in transmission/distribution transformers, detecting partial discharge, thermal faults, and arcing to prevent catastrophic failure and unplanned outages.
- Substation Automation: Integrates with SCADA systems via RS-485 Modbus RTU, providing real-time gas concentration data for centralized condition-based maintenance.
- Power Generation Plants: Monitors generator step-up transformers, alerting operators to winding overheating or insulation degradation during high-load operation.
- Industrial Facility Transformers: Protects transformers in steel mills, chemical plants, and manufacturing facilities, ensuring continuous power supply and reducing production downtime.
- Renewable Energy Infrastructure: Monitors transformers in wind farms and solar power plants, supporting grid stability by identifying faults before they impact energy output.
- Railway Substations: Ensures reliable operation of traction transformers, detecting oil degradation from frequent load fluctuations and harsh environmental conditions.
- Data Center Power Distribution: Safeguards critical transformers powering data centers, preventing downtime that could result in data loss and financial damage.
- Offshore Platform Transformers: Withstands salt spray and humidity in NEMA 4X enclosure, monitoring oil health in offshore wind and oil & gas installations.
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