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Controllers

The Hydran 201Ti can be connected to optional controllers to facilitate

communication with multiple units and create a local network.

• The Ci-1 controller is a one channel controller that replicates some of

the human interface functions (gas value display, alarm buttons). This is

ideal when the 201Ti is mounted out of reach on an upper valve of the

transformer. It also brings down the alarm relay contacts and the analogue

output for easier wiring.

• The Ci-C controller receives the gas ppm data from up to four 201Ti,

providing a single communication point for all four monitors. It has no

alarm relay or analogue output. This is ideal when protecting 3 single phase

transformers + 1 spare.

It is possible to “daisy-chain” up to 32 controllers or 201Ti through their RS-485

port. The maximum chain distance (all cables added up) is 1200m (4000ft). All

the 201Ti connected to any of the daisy-chained controllers can be accessed

through any controller in the local network, thus facilitating communication by

only having to fit one RS-232 modem for example.

Human Interface

• Backlit LCD display of gas information

• Keypad to stop unit and acknowledge alarms

• Compatibility with GE’s acclaimed Perception™

software to download, trend and analyze

transformer data

Mark IV Improvements

• Completely overhauled with improved sensor

durability, new electronic boards and power

supply to make it RoHS compliant while

increasing device reliability and capabilities

• Local USB port to replace the RS-232 port no

longer found on most field laptops

• Digital output of registers using Modbus®

protocol communication over isolated RS-485

Easy Asset Supervision

• Permanently mounts on a single transformer oil

valve. No extra piping or pump required

• “Composite gas” sensor responds 100% to

Hydrogen (general fault gas) and is also sensitive

to Carbon Monoxide (overheated paper)

Acetylene (arcing) and Ethylene (overheated oil)

thus covering main failure root causes

• “Hydrogen only” gas sensor is simpler and

responds 100% to Hydrogen gas only, the

general fault gas

Configurable Alarms

• An alarm is raised when an abnormal level of

fault gas is detected

• Two alarm levels (one for Alert and one for Alarm)

can be set to show increasing severity

• Alarms can be set on gas ppm levels or on gas

rate of change (ROC) over an hour or a day

• Automatic self-test every 15 days will trigger

service alarm if it detects a fault, including power

failure, oil valve closed, sensor or  battery needing

replacement

The 201Ti uses fuel cell technology (described as fixed instruments – method 3 in the standard) and is

now available with a choice of either the world renown “Hydran Composite Gas” sensor which responds

100% to Hydrogen and is also sensitive to Carbon Monoxide, Acetylene and Ethylene or the more basic

“Hydrogen Only” sensor which focuses purely on Hydrogen gas generation.

Because the monitoring unit mounts on a single valve and uses Dynamic Oil Sampling, there is no need

for a pump or extra piping to connect to different valves. Due to its uncomplicated features and the easily

understood information it provides, the 201Ti has been amongst the monitors of choice for many years,

with one of the largest installed base of any DGA monitor.

Key Benefits

• Continually measures key fault gas to give you an insight into the transformer’s condition

• Choice of gas sensor: traditional “Composite gas” or more basic “Hydrogen only”

• Communicates gas ppm and gas rate of change values remotely to avoid site visits and enable

remote supervision

• Fourth generation of this continuously improved design, with over 25.000 units sold worldwide

Essential DGA monitoring for transformers

Transformers are key and expensive components of the electrical grid and knowledge of their

health condition is essential to having a reliable network. When a transformer’s insulation system is

overstressed, gases are produced that dissolve in the oil. Dissolved Gas-in-oil Analysis (DGA) is recognized

as the best indicator of developing faults.

The Hydran™ 201Ti is a small and easy to setup continuous Dissolved Gas-in-oil Analysis (DGA) monitor.

It provides the basic information used by IEEE® Standard C57.104 and can be used as an essential first

line of defence for the transformers in your fleet to obtain advance warning of a failure condition and

minimize the risk of an unplanned outage.

Applications

Power Utilities

• Simple and effective solution for less-critical transformers

• Focuses and prioritizes asset replacement strategy

Industrial Plants

• Reduces the risk of process interruption due to power failure

• Minimizes costly production downtime

Key Benefits

Small form factor, no moving parts, and low maintenance

Support for Asset Performance Management (APM) software analytics, enabling fleet level deployments

Condition monitoring for transformers with mineral insulating oils or ester based fluids (natural and synthetic)

Extending beyond DGA monitoring, through the connection of sensors, the Hydran M2-X can monitor

other parameters such as top oil temperature, load current and through the use of IEEE based mathematical models,

can provide further insight on changing transformer conditions

Provides critical data for APM strategies, facilitating planning of site intervention and maintenance activities

The M2-X-HZ version is certified for hazardous locations where ignitable concentrations of flammable gases,

vapors or liquids are not likely to exist under normal operating conditions but where the risk still exists.

Features

Easily upgradeable in the field to accept analog signals and monitor other key transformer parameters

Computation of winding hot spot and other IEEE transformer models for enhanced diagnostics

of the transformer’s condition (depending on sensors installed)

Easy to install on a single existing transformer valve, often without an outage required

Integrated display and keypad for simplified local user interaction and data visualization

Built-in moisture sensor provides water in oil measurement, critical to identify paper degradation and leaking gaskets

Compatible with GE’s acclaimed Perception™ software to download, trend and analyse transformer health data

The Hydran M2-X is the next generation of the field-proven family of Hydran DGA monitoring solutions,

providing continuous monitoring of gas and moisture levels to alert users of developing faults and minimize the risk of unplanned outages.

The M2-X builds on GE’s strong domain expertise to deliver an optimized,

low maintenance monitoring device with extended sensor life.

The Hydran M2-X is also available in a UL certified, HazLoc version (part number: M2-X-HZ)

for installation on transformers located in hazardous locations designated as Class I, Division 2

The Hydran sensors are available as a traditional Hydran composite gas (H2. CO, C2H2. C2H4) sensor or a discrete Hydrogen only (H2) sensor.

In addition, it tracks moisture in oil (reading in %RH and ppm) and is compatible with various transformer oil types

(standard mineral insulating oils and newer natural and synthetic ester based fluids).

Applications

Medium to large sized transformers

Utility and industrial transformers

Transmission transformers

FUNCTIONAL CHARACTERISTICS

Compatibility:

VMEbus specification compatible.

Double height form factor.

Output Connector Type:

AMP no. 206584-1

Output Organization:

Two ports, 16 bits wide.

Addressable to any address within short supervisory or

short nonprivileged I/O map.

Address Modifier Codes:

Jumper selectable for short

supervisory or short nonprivileged I/O access. Factory

configured for short supervisory I/O access.

Addressing Scheme:

Two ports individually

addressable on 8- or 16-bit boundaries. Two

eight-position DIP switches provide unlimited short data

I/O address map selection.

DESCRIPTION

— The VMIVME-4905. a digital-to-synchro or resolver converter (DSC/DRC) board,

utilizes the NATEL-HSDR 2514 converter module. It

supports a wide variety of options which are supported by

configuring jumpers on the basic printed circuit board and by

installing optional parts (see the Ordering Options). The

VMIVME-4905 board, with supported Built-in-Test VMIC

hardware, features both offline and online fault detection and

isolation. The Built-in-Test features require a VMIC

quad-channel synchro-to-digital converter (SDC) board

(VMIVME-4911) or a single channel SDC board

(VMIVME-4910) and a standard synchro test backplane

(SRTbus™) installed in the P2 position of a standard VME

chassis (refer to VMIC’s Synchro/Resolver (Built-in-Test)

Subsystem Configuration Guide, Document No.825-000000-004).

The board accepts a 14-bit digital output

word (shaft angle), a reference excitation voltage, and

produces a synchro or resolver output.

The board is ideally suited for computer-based systems

in which digital information is processed, such as simulators,

robotics, and other control-oriented systems. The DSC/DRC

is provided with several options and is capable of interfacing

with most standard synchro or resolver devices.