Category: GE

Enhanced Monitoring with Extended Sensor Life

When a transformer’s insulation system is overstressed, the oil and paper undergo chemical

degradation producing both hydro-carbon gases and moisture that dissolve into the insulating oil. This

increased ageing will shorten the transformer’s life, impact its reliability and in some cases can even

lead to catastrophic failures.

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

It provides 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 an extended sensor life.

Key Benefits

• Small form factor, no moving parts, low maintenance, and support for APM software analytics,

enabling fleet level deployments

• Condition monitoring for a wide range of 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

• Providing critical transformer gas behavior data for Asset Performance Management (APM)

strategies, facilitating planning of site intervention and maintenance activities

• Supports a wide range of communication methods and protocols to enable easy and secure

integration with GE’s digital platforms including Perception™ transformer fleet management

software, DS Agile substation HMI, PREDIX™, and other APM software tools, historians and SCADA

systems

Programmable Timers

– Two 16-bit and two 32-bit timers

– Mapped to PCI memory space

– Fully software programmable to generate PCI bus interrupts

Watchdog timer

– Programmable intervals

– Interrupt and board reset triggers

Dimensions

– 6U (4HP) Single Slot Eurocard Form Factor

– Height 9.2 inches (233.4 mm)

– Depth 6.3 inches (160 mm)

– Thickness 0.8 inches (20.3 mm)

Power Requirements

– +5 VDC (+5/-2.5%), 4.0 A (typical), 5.4 A (maximum)

– +12 VDC (+/-5%), less than 1 mA

-12 VDC (+/-5%), less than 1 mA

Note: VME interface only allows lower voltages of -4.875

Note: PMC sites with power requirements are not included.

Dimensions

– 6U (4HP) Single Slot Eurocard Form Factor

– Height 9.2 inches (233.4 mm)

– Depth 6.3 inches (160 mm)

– Thickness 0.8 inches (20.3 mm)

Power Requirements

– +5 VDC (+5/-2.5%), 4.0 A (typical), 5.4 A (maximum)

– +12 VDC (+/-5%), less than 1 mA

-12 VDC (+/-5%), less than 1 mA

Note: VME interface only allows lower voltages of -4.875

Note: PMC sites with power requirements are not included.

VMEbus Backplane Interface

– The Tundra Universe II supports VME64 mode:

a32/a24/d32/d08(eo)/mblt64/blt32

Serial Ports

– Four 16550-compatible serial ports

– One RJ45 on front panel

– Three connections to P2

– Ports have independent 16-byte FIFOs and support baud rates up to 115 Kbaud

– All ports are configurable as RS232/422

PMC Expansion Slot

– One 5V PMC expansion slot (IEEE 1386.1)

Programmable Timers

– Two 16-bit and two 32-bit timers

– Mapped to PCI memory space

– Fully software programmable to generate PCI bus interrupts

Watchdog timer

– Programmable intervals

– Interrupt and board reset triggers

Specification

Processor

– Intel Pentium M at 1.1 GHz, 1.4 GHz or 1.8 GHz

– Good thermal characteristics

– 2 Mbyte L2 cache (1.4 GHz and 1.8 GHz options) and 1 Mbyte (1.1 GHz option)

– 400 MHz system and memory bus

SDRAM

– Maximum memory configuration of 1.5 Gbyte DDR SDRAM with optional ECC support

Compact Flash

– CompactFlash up to 2 Gbyte accessible via auxiliary IDE port

– CompactFlash can be configured as a boot device via BIOS Boot Device Setup

BIOS

– The V7807RC system BIOS and video BIOS are provided by reprogrammable flash memory.

Ethernet

– Dual Gigabit Ethernet interfaces using the Intel 82546EB, with one port connected to the front panel and the second port connected to P2

– Both Gigabit Ethernet ports can be routed to the optional VITA 31.1-capable P0 interface.

– One 10/100 Mbit Ethernet port on the front panel using the Intel 82551ER

USB ports

– Four USB ports, two to the front panel and two to the P2

– Supported USB features include

– Asynchronous data transfer

– Asynchronous messaging

– Self-recognition and configuration of peripheral devices

– Dynamic (hot) connections

Hot Standby CPU Redundancy Features 

For details on the configuration and operation of a Hot Standby CPU redundancy system, refer to the PACSystems 

Hot Standby CPU Redundancy User’s Manual, GFK-2308. 

▪ Supports single and redundant Ethernet remote I/O LANs through Ethernet Network Interface Unit (ENIU) 

modules 

▪ Supports simplex and redundantly controlled PROFINET remote IO (requires firmware version 8.00 or later) 

▪ Survives any one single point of failure 

▪ Bumpless switching 

o Synchronized CPUs 

o One scan switching 

o Transfer data size up to 2Mbytes; selected in CPU hardware configuration and in variable properties 

▪ Supports two redundancy communications links 

▪ Online repair of failed component 

▪ Online programming 

▪ Redundancy Memory Xchange Module 

o Manual toggle switch for role switching, which transitions control from the active unit to the backup unit 

o Redundancy status LEDs  

▪ Application-initiated role switching to switch the active unit to backup status 

▪ Redundancy status bits and message logging 

▪ Memory error checking and correction (ECC) single bit correcting and multiple bit checking 

▪ Background diagnostics

RX3i System Manual, GFK-2314F or later. 

▪ Supports up to 512 program blocks. Maximum size for a block is 128KB. 

▪ CPU firmware may be upgraded in the field. 

▪ CPU supports firmware upgrades of modules in its backplane. 

▪ Two serial ports: an RS-485 serial port and an RS-232 serial port. 

▪ Ethernet communications via the rack-based Ethernet 

Interface module (IC695ETM001). For details on Ethernet 

capabilities, refer to PACSystems RX7i & RX3i TCP/IP 

Ethernet Communications User Manual, GFK-2224. 

▪ Time Synchronization to SNTP Time Server on Ethernet 

network when used with Ethernet Release 5.0 or later. 

▪ Compliant with EU RoHS Directive 2002/95/EC using the 

following exemptions identified in the Annex: 7(a), 7(c)-I, & 7(c)-III.

Installation

• Installation should not be attempted without refer

ring to the applicable Programmable Controller

Installation Manual (see reference 5).

• Make sure rack power is off.

• Install expansion memory if required.

• Connect the battery to either of the battery con

nectors on the module. (See figure 2)

• Install in the rack. (See figure 1)

• Turn on power.

The module should power up and blink the top LED.

When the diagnostics have completed successfully the

top LED stays on.

Expansion Memory

The PCM can operate with or without an expansion

memory daughter board.  The base memory on the

PCM board has up to 95 Kbytes user memory.  The ex

pansion memory daughter board permits expansion of

program/data memory by 64. 128. 256 or 512 Kbytes.

The battery which supports this memory is located on

the base board housing as shown in figure 2.

Batteries

The Lithium battery (IC697ACC701) is installed as

shown in figure 1.  This battery maintains user

memory when power is removed and operates the

calendar clock on the PLC CPU.  Be sure to install the

new battery before removing the old battery.  Specific

indication of a low battery state is detailed in References 3 and 4.

Turn power on.

CPU Installation:

Clear memory using either MS-DOS or

Windows programming software following

instructions in the Programming Software User’s

Manual (See reference 1).

PCM Installation:IC697MEM713 CMOS Expansion Memory Installation

For the PCM follow the instructions in the Pro

grammable Coprocessor Module Support Software

User’s Manual (See reference 3).

Installation

Installation should not be attempted without refer

ring to the applicable Programmable Controller

Installation Manual (See reference 4).

Make sure rack power is off.

Plug the 64 pin connector into the connector on

the base board, and engage snaps.

Place module in rack.

Turn power on.

CPU Installation:

Clear memory using either MS-DOS or

Windows programming software following

instructions in the Programming Software User’s

Manual (See reference 1).

PCM Installation:

For the PCM follow the instructions in the Pro

grammable Coprocessor Module Support Software

User’s Manual (See reference 3).

Ground Overcurrent Protection

Firmly grounded and low impedance grounded distribution systems require fast ground fault clearance to limit equipment damage.

the 750/760 provides ground fault protection with the following features

– Neutral IOC and TOC

– Grounding IOC and TOC

The 750/760 allows the use of directional elements to supervise ground overcurrent protection elements.

This means that the 750/760 can be used to provide sensitive tripping for unidirectional faults.

Typical applications for directional overcurrent protection include

– Isolating faulty feeders in ring bus or parallel feeder arrangements.

– Protection against faults in the return mains supply from generators in industrial plants

– Sensitive high-speed earth protection for transformers

Sensitive earthing and Restrictive Earth Fault (REF) protection

The sensitive earth and restricted earth fault protection function provides sensitive detection of earth faults.

Sensitive ground fault protection includes

– Instantaneous (50N) and timed (51N) – 2 levels

– Directional monitoring distinguishes between forward and reverse faults.

– Dual polarization (current and voltage) for maximum safety and reliability

750/ 760 for transformer backup protection (grounded converter windings and autotransformers) with RGF function.