GE ENERGY HYDRAN H201Ci-1 Single-Channel Controller

I. Product Overview

II. Technical Specifications and Performance

1. Monitoring Parameters and Accuracy

2. Electrical and Communication Characteristics

• Power Supply Requirements: Wide-voltage power supply design, supporting 100-240V AC (50/60Hz) or 24V DC (±10%), maximum power consumption ≤15W, suitable for power supply needs in different scenarios (e.g., AC power supply in substations, DC power supply in industrial workshops);

• Communication Interfaces: Supports multi-protocol communication, including RS485 (Modbus RTU), Ethernet (Modbus TCP/IP), and 4G LTE (optional); data transmission rate: RS485 9600-115200bps, Ethernet 10/100Mbps; enables local data reading and remote cloud monitoring (e.g., access to the GE Predix industrial cloud platform);

• Data Storage: Built-in 8GB industrial-grade SD card, supporting local storage of ≥3 years of historical data (at a sampling frequency of 5 minutes per sample); data format compatible with CSV for easy offline analysis; supports automatic data backup, with no data loss after power failure.

3. Environmental and Protection Performance

• Operating Environment: Temperature range -30℃~60℃, relative humidity 5%~95% (non-condensing); can operate stably in outdoor substations, high-temperature workshops, and coastal high-salt-fog environments;

• Protection Rating: IP65 (enclosure), dustproof and waterproof, can be directly installed near outdoor equipment without additional protective boxes;

• Anti-interference Performance: Complies with IEC 61000-6-2 industrial anti-interference standards; ESD (Electrostatic Discharge) protection ±4kV (contact discharge)/±8kV (air discharge); EFT (Electrical Fast Transient) protection ±2kV (power port)/±1kV (signal port), adaptable to the strong electromagnetic environment of substations.

4. Diagnosis and Alarm Functions

• Fault Diagnosis Algorithm: Built-in GE patented "Insulation Status Evaluation Model", which automatically determines fault types (partial discharge, low-temperature overheating, high-temperature overheating, arc discharge) based on the dissolved gas concentration ratio method (e.g., Duval Triangle, Rogers Ratio Method), with a diagnosis accuracy rate ≥90%;

• Alarm Mechanism: Supports multi-level alarms (early warning, general alarm, emergency alarm), and alarm thresholds for each parameter can be customized (e.g., H₂ concentration ≥150μL/L triggers early warning); alarm methods include local sound and light alarm (LED indicator + buzzer), remote SMS/email alarm (requires 4G module support), and monitoring system pop-up alarm;

• Trend Analysis: Automatically generates historical trend curves (daily/weekly/monthly/yearly) for each parameter; judges the fault development speed through the trend slope (e.g., H₂ concentration increasing by more than 50μL/L per week indicates accelerated fault), assisting operation and maintenance personnel in evaluating the remaining service life of the equipment.

III. Installation and Operation & Maintenance

1. Installation Specifications

(1) Installation Method (Portable External Connection Type)

• Installation Location Selection: Select a location near the sampling valve of the transformer/reactor (distance ≤2 meters), avoid direct sunlight and rain exposure; installation height 1.2-1.5 meters for easy operation by maintenance personnel;

• Oil Circuit Connection:

1. Close the equipment sampling valve, connect the sampling valve to the oil inlet of the HYDRAN H201Ci-1 using a dedicated high-pressure hose (pressure resistance ≥10MPa); the hose length ≤3 meters, avoid bending;

2. Open the sampling valve to slowly vent air; after ensuring no air bubbles in the oil circuit, open the device's oil inlet valve and confirm the oil circuit is unobstructed (the device's "oil flow" indicator is on);

• Electrical Connection:

1. Connect the power cable (AC 220V or DC 24V), clearly distinguish between live wire, neutral wire, and ground wire; ground resistance ≤4Ω;

2. Communication cable connection: Use shielded twisted-pair cables (0.5mm²) for RS485 cables, with single-end grounding of the shield layer; use CAT5e shielded cables for Ethernet cables, connecting to the monitoring system switch;

• Power-on Debugging: Turn on the power; the device automatically completes self-inspection (about 30 seconds); after passing self-inspection, it enters normal monitoring mode; check whether the display of each parameter is normal (e.g., the error between oil temperature and the equipment's built-in thermometer ≤1℃).

(2) Installation Precautions

• Flush the hose with insulating oil before oil circuit connection to prevent impurities from entering the device;

• Do not disassemble the oil circuit when the equipment is energized; if disassembly is required, first close the sampling valve and release pressure;

• For outdoor installation, ensure the device's waterproof seal ring is intact to prevent rainwater from seeping into the internal circuit.

2. Daily Operation & Maintenance

(1) Regular Inspection (Once a Month)

• Appearance Inspection: Check for shell damage, loose cable connections, and oil circuit leakage;

• Local Data Verification: Check the device display to confirm that all parameters are within the normal range (e.g., H₂<100μL/L, moisture <30ppm) and there is no alarm information;

• Oil Circuit Maintenance: Open the device's drain valve, discharge a small amount of insulating oil (about 50mL), check the oil sample for impurities, and ensure the oil circuit is unobstructed.

(2) Regular Calibration (Once a Year)

• Gas Calibration: Use GE's dedicated standard gas (e.g., mixed gas of H₂ 100μL/L and CH₄ 50μL/L), inject it through the device's calibration interface, start the automatic calibration program, and save the calibration data after calibration;

• Moisture Calibration: Use standard moisture oil samples (e.g., 10ppm, 100ppm), connect them to the device's moisture calibration interface; after calibration, verify the measurement error (required to be ≤±5%);

• Calibration Records: Record the calibration date, calibrator, and errors before and after calibration; calibration data is automatically stored in the SD card for easy traceability.

(3) Troubleshooting