GE Digital Energy Hydran 201Ti Transformer DGA Monitor

GE Digital Energy Hydran 201Ti Transformer DGA Monitor

Hydran 201Ti is a small, easy to install continuous dissolved gas analysis (DGA) monitor for transformer oil launched by GE Digital Energy, based on IEEE ®  Standard C57.104 provides core monitoring data, which can serve as the primary line of defense for transformer fault warning and reduce the risk of unplanned downtime. Its latest Mark IV version has been optimized in design and functionality, and currently has sales of over 30000 units and a huge installed base.

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Core functions and technical features

1. Gas monitoring capability

Sensor technology: using fuel cell type sensors with breathable membranes, in contact with mineral transformer insulation oil through "dynamic oil sampling" technology, without the need for pumps or additional pipelines; Optional 5-year sensor warranty.

Monitoring range and accuracy: The H ₂ equivalent measurement range is 0-2000ppm (volume ratio), with an accuracy of ± 10% ± 25ppm of the reading; Fast response speed, 90% step change only takes 10 minutes.

Gas sensitivity: 100% response to H ₂ (universal fault gas), while sensitive to CO (paper overheating), C ₂ H ₂ (arc discharge), and C ₂ H ₄ (oil overheating), covering all major fault sources of transformers.

2. Display and operation

Equipped with a backlit LCD display screen (2 lines x 16 characters), it can display the dissolved gas ppm value in real time.

Comes with a built-in keyboard that supports device settings and alarm confirmation operations.

3. Communication function

Local communication: Equipped with a USB B-type interface, it replaces the RS-232 interface that has been removed from most on-site laptops, making it convenient to connect to a computer and configure the system locally.

Remote communication:

Analog output: 4-20mA signal (corresponding to 0-2000ppm range), maximum load 10V, insulation level 2000Vac RMS.

Digital output: Through an isolated RS-485 interface, supporting Modbus or Hydran protocols, outputting gas ppm values and hourly/daily gas change rate (ROC).

Dry contact relay: 3 SPDT type relays (C type), 2 for fault gas alarm, 1 for service alarm, rated load: 3A@250Vac or 3A@30Vdc .

4. Alarm and self check

Configurable alarms: Supports two-level gas alarms (Alert warning, Alarm emergency), which can be set based on gas ppm concentration or hourly/daily change rate; Triggering an alarm when abnormal fault gas levels are detected.

Automatic self check: Conduct a self check every 15 days. If power failure, oil valve closure, sensor or battery replacement issues are found, a service alarm will be triggered.

Installation and compatibility

1. Installation characteristics

Single valve installation design, directly installed on the transformer oil valve without the need for additional pipelines or pumps; Compatible with 1-inch, 1.5-inch, and 2-inch internal thread NPT valves.

The shape is cylindrical, with a diameter of 178mm (7 inches) and a length of 180mm (7 and 1/8 inches); Installation weight 5.6Kg (12 pounds), transportation weight 6.9Kg (15 pounds).

Optional accessories: Non NPT valve adapter, fin heat dissipation adapter (used when the ambient temperature exceeds 40 ° C or the oil temperature exceeds 90 ° C), sensor installation/removal special pipe wrench.

2. Controller and Networking

Can connect optional controllers to build a local network, supports RS-485 "daisy chain" connection, can connect up to 32 controllers or 201Ti devices in series, with a total chain length of up to 1200m (4000 feet), and all devices can be accessed through any controller in the network.

Two types of core controllers:

Ci-1 single channel controller: replicates some human-machine interaction functions (gas value display, alarm button), suitable for use when installing 201Ti in high position valves of transformers. It also leads out alarm relay contacts and analog outputs for easy wiring.

Ci-C four channel controller: capable of receiving gas ppm data from 4 201Ti units, providing a single communication point, no alarm relay, and analog output, suitable for protecting 3 single-phase transformers and 1 backup transformer scenarios.

3. Software compatibility

Compatible with GE's well-known Perception Fleet software, supporting data download, trend analysis, and management, and operating logic consistent with other GE DGA monitoring devices.

Environmental and power requirements

1. Environmental adaptability

Working environment temperature: -40 ° C to+55 ° C (-40 ° F to+131 ° F).

Working environment humidity: 0-95% RH (non condensing).

Oil temperature at the valve: -40 ° C to+105 ° C (-4 ° F to+221 ° F, requires fin heat dissipation adapter).

Oil pressure at the valve: 0-700KPa (0-100psi), the sensor has anti vacuum capability.

Protection level: NEMA 4X certified, meets IP66 requirements.

2. Power parameters

AC power supply: switchable between 90-132Vac or 180-264Vac, frequency 47-63Hz, maximum power consumption 475VA.

Applicable scenarios

1. Power Utilities

Provide a simple and effective monitoring solution for non critical transformers.

Focus and prioritize the replacement strategy of auxiliary assets to optimize asset management.

2. Industrial Plants

Reduce the risk of production process interruption caused by power failures.

Reduce high production downtime losses and ensure continuous production.