GE Vernova HYDRAN 201Ci-1 – Single-Channel Controller for Transformer DGA Monitoring
GE Vernova HYDRAN 201Ci-1 – Single-Channel Controller for Transformer DGA Monitoring - Image 2
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GE Vernova HYDRAN 201Ci-1 – Single-Channel Controller for Transformer DGA Monitoring

  1. GE HYDRAN 201Ti: The companion DGA transmitter that pairs directly with the 201Ci-1 controller for continuous dissolved gas monitoring.
  2. GE HYDRAN M2 / M2-X: Advanced DGA monitors with built-in moisture measurement, IEEE transformer models, and direct Ethernet/IEC 61850 support.
  3. GE Kelman Transfix DGA 500: Multi-gas DGA analyzer using Photo-acoustic Spectroscopy (PAS) technology for detailed diagnostic analysis.
  4. GE Vernova Perception™ Software: Transformer fleet management software for downloading, trending, and analyzing HYDRAN DGA data.
  5. GE Multilin 845 / 850: Advanced transformer protection relays that can integrate with DGA data for comprehensive electrical and chemical monitoring.
  6. GE Vernova APM Software: Asset Performance Management platform for fleet-level analytics and predictive maintenance strategies.
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Description

GE Vernova HYDRAN 201Ci-1 – Single-Channel Controller for Transformer DGA Monitoring

Executive Summary
The GE Vernova HYDRAN 201Ci-1 is a single-channel communication controller specifically designed to interface with the HYDRAN 201Ti Dissolved Gas Analysis (DGA) transmitter. Serving as the central communication hub in the HYDRAN 201i monitoring system, the 201Ci-1 aggregates real-time composite fault gas data from the 201Ti sensor, enables configurable alarm thresholds, and provides robust serial communication interfaces for remote monitoring and data acquisition. It is an essential component for integrating transformer DGA data into SCADA, DCS, or GE Vernova Perception™ software ecosystems, ensuring early fault detection and reliable asset supervision.

HYDRAN 201CI-1

Core Technical Specifications

  • Manufacturer: GE Vernova (formerly GE Energy / GE Grid Solutions)
  • Product Series: Hydran 201i Monitoring System
  • Module Type: Single-Channel DGA Communication Controller
  • Compatible Transmitter: HYDRAN 201Ti (Mark IV)
  • Communication Interfaces: RS-232 (local configuration), RS-485 (remote communication)
  • Supported Protocols: Modbus RTU, Hydran Protocol
  • Analog Output: 4–20 mA isolated analog output for dissolved gas ppm value
  • Alarm Relays: Multiple configurable relay outputs for fault gas concentration and rate-of-change (ROC) alarms
  • Power Supply: Wide-range AC/DC input (100–240V AC 50/60Hz or 24V DC ±10%)
  • Display: LCD display for local status, gas readings, and alarm indication
  • Enclosure Rating: IP65 (suitable for outdoor substation installation)
  • Operating Temperature: -30°C to +60°C
  • Mounting: Panel-mount or DIN-rail mount in control cabinet

Key Features and Advantages

  • Dedicated Single-Channel Control: Purpose-built to interface with one HYDRAN 201Ti transmitter, providing a streamlined and reliable communication link between the field sensor and the central monitoring system.
  • Real-Time Gas Monitoring: Continuously receives composite fault gas data (H₂, CO, C₂H₂, C₂H₄) from the 201Ti transmitter, enabling immediate detection of developing transformer faults.
  • Configurable Alarm Thresholds: Supports user-defined alarm levels based on absolute gas concentration (ppm) and rate of change (ROC) over one hour or one day, providing early warning before critical failures occur.
  • Multiple Communication Options: Provides RS-232 for local laptop configuration and RS-485 for remote integration into SCADA/DCS systems using Modbus RTU or Hydran Protocol.
  • Analog Output Integration: Offers a standard 4–20 mA analog output for seamless connection to legacy monitoring systems or PLCs that do not support serial communication.
  • Remote Configuration & Upgrades: Supports remote parameter setting and firmware upgrades via serial communication, reducing the need for on-site visits.
  • Automatic Alarm Notification: Under remote communication conditions, the controller can trigger automatic alarm calls to notify personnel of critical fault conditions.
  • Rugged Industrial Design: Built to withstand harsh substation environments with an IP65-rated enclosure and wide operating temperature range.

Application Scenarios

  • Substation Transformer Monitoring: Serving as the communication gateway for HYDRAN 201Ti transmitters installed on transmission and distribution transformers in utility substations.
  • Industrial Power Systems: Integrating transformer DGA data into plant-wide SCADA systems for refineries, steel mills, and manufacturing facilities.
  • Remote Monitoring Stations: Enabling centralized supervision of transformers in remote or unmanned locations through RS-485 daisy-chain communication.
  • Legacy System Integration: Providing analog (4–20 mA) and serial outputs for connecting modern DGA sensors to older control systems that lack Ethernet or advanced protocol support.
  • Transformer Fleet Management: Aggregating DGA data from multiple transformers (via multiple 201Ci-1 units) for upload to GE Vernova Perception™ software for fleet-level analytics.

HYDRAN 201CI-1

Related Product Recommendations
For comprehensive transformer monitoring and system integration, consider the following compatible GE Vernova products:

  1. GE HYDRAN 201Ti: The companion DGA transmitter that pairs directly with the 201Ci-1 controller for continuous dissolved gas monitoring.
  2. GE HYDRAN M2 / M2-X: Advanced DGA monitors with built-in moisture measurement, IEEE transformer models, and direct Ethernet/IEC 61850 support.
  3. GE Kelman Transfix DGA 500: Multi-gas DGA analyzer using Photo-acoustic Spectroscopy (PAS) technology for detailed diagnostic analysis.
  4. GE Vernova Perception™ Software: Transformer fleet management software for downloading, trending, and analyzing HYDRAN DGA data.
  5. GE Multilin 845 / 850: Advanced transformer protection relays that can integrate with DGA data for comprehensive electrical and chemical monitoring.
  6. GE Vernova APM Software: Asset Performance Management platform for fleet-level analytics and predictive maintenance strategies.

Frequently Asked Questions (FAQ)

  • Q: What is the difference between the HYDRAN 201Ci-1 and the HYDRAN 201Ti?
    A: The 201Ti is the field-mounted transmitter/sensor that physically measures dissolved fault gases in the transformer oil. The 201Ci-1 is the panel-mounted controller that receives data from the 201Ti and provides communication interfaces (RS-232/RS-485, 4–20 mA) for integration into monitoring systems. They work together as a complete HYDRAN 201i monitoring system.
  • Q: How many 201Ti transmitters can one 201Ci-1 controller manage?
    A: The 201Ci-1 is a single-channel controller, meaning it interfaces with one 201Ti transmitter. For multi-transformer monitoring, multiple 201Ci-1 controllers can be daisy-chained via RS-485, or a multi-channel aggregator can be used.
  • Q: What communication protocols does the 201Ci-1 support?
    A: The 201Ci-1 supports Modbus RTU and the proprietary Hydran Protocol over RS-485 for remote communication. RS-232 is available for local laptop configuration.
  • Q: Can the 201Ci-1 be used with other DGA sensors besides the 201Ti?
    A: The 201Ci-1 is specifically designed to interface with the HYDRAN 201Ti transmitter. For other DGA sensors, GE Vernova offers alternative controllers and monitoring solutions.
  • Q: Does the 201Ci-1 support remote configuration?
    A: Yes. The controller supports remote parameter setting and firmware upgrades via serial communication, reducing the need for on-site maintenance visits.
  • Q: What alarm types does the 201Ci-1 support?
    A: The controller supports configurable alarms based on absolute gas concentration thresholds (Alert/Alarm levels) and rate of change (ROC) over one hour or one day, providing flexible early warning capabilities.

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