power transformer brochure

7/30/2019 Power Transformer Brochure

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APPLICATION

On-site analysis of transformeroil and gas samples forthe detection of transformerincipient faults.

GASES MEASURED

Dissolved hydrogen in oil.

TECHNOLOGY

Gas chromatograph optimizedfor the analysis of hydrogen.

TYPE OF MEASUREMENT

Thermal conductivitymeasurement usingproprietary cell.

DETECTABILITY

Better than 5 ppm by volumeof dissolved hydrogen intransformer oil for GP-100samples.Better than 15 ppm by volumeof dissolved hydrogen intransformer oil for Shake Testsamples.

TEST TIMETest reading is displayed withinapproximately 60 seconds aftertest initiation.Total test time of approximately120 seconds.

RANGE

0 - 5000 ppm of dissolvedhydrogen in transformeroil for GP-100 samples.0 - 15000 ppm of dissolvedhydrogen in transformeroil for Shake Test samples.

REPEATABILITY

2% 1 ppm for GP-100 samples.6% 3 ppm for Shake Testsamples.

LINEARITY

Linear: 0 - 5000 ppm forGP-100 samples.Linear: 0 -15000 ppm forShake Test samples.

PHYSICAL DIMENSIONS

Width: 14.5 in/369 mmDepth: 14 in/356 mm

Height: 6 in/153 mmOperating weight: 15.8 lb/7.2 kgShipping weight: 26.4 lb/12.0 kg

ENVIRONMENT

Oper. temp. range of0 to 50 C/32 to 120 FOper. hum. range of 10 to 90%,noncondensing.Stor. temp. range of -40 to70 C/-40 to 158 FStor. hum. range of 5 to 90%,noncondensing.

CARRIER GASHigh-purity nitrogen (N2);internal carrier gas supply viarefillable 300 mL tank, D.O.T.certified to 1800 psig; autonomyof 30 hours in continuousoperation; refillable via external1/8" Swagelok fitting.

POWER

AC charger: 115VAC10%, 60 Hzor 230VAC10%, 50 Hz; output:12VDC-500 mA with chargecurrent drop down to 100mA

at 14VDC.Rechargeable lead-acid, gel-cellbattery.Automatic voltage monitoringwith visible low voltage signal.

CALIBRATION

SPANCYL calibrating gas rated at500 ppm of dissolved H2 in oil.SPANCYL cylinder contains 850to 1000 calibrations and comesstandard with metering device.

STANDARD FEATURES

AC Charger.GP-100 connector.Filling line for carrier gas refilling.Users manual.Windows-based set-up software.

ADDITIONAL ACCESSORIESSPANCYL cylinder for calibration.10 mL gas tight syringe foranalysis of gas samples.Shake Test syringe for analysisof oil samples.Bag of oil traps (25/bag).

WARRANTY

Morgan Schaffer Systems gasdetection equipment is backedby a 12-month factory warranty.The PHA-1000 analyzer and allMSS monitoring systems are

available through MSS world-wide network of authorizeddistributors and agents.

Note: Continuing research and

improvements may result in

specification or appearance

changes at any time.

5110 de Courtrai AvenueMontreal, QuebecCanada H3W 1A7

Tel.: 514-739-1967Fax: 514-739-0434E-mail: [email protected]

Visit our website at: www.morganschaffer.comTransformers - The Inside View

MORGANSCHAFFERSYSTEMS

Copyright 1999 Morgan Schaffer Systems Inc. All rights reserved. Shake Test and the MS Morgan Schaffer Systems Transformers - The Inside View logo are trademarksof Morgan Schaffer Systems Inc. Transformer Oil Analyst is a trademark of Hydra-Centaurus Technologies Inc. Swagelok is a trademark of Swagelok Co.

THER MSS PRODUCTS

Transformer Fault Gas

Analyzer TFGA-P200

Fault Gas Probe

GP-100

Fault Detector and

Water Monitor

AMS-500 Plus

Transformer Oil Analyst

Software

Specifications

Model PHA-1000


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Portable Hydrogen Analyzer

MORGAN

SCHAFFER

SYSTEMS

Model PHA-1000Field instrument for early detectio

of transformer incipient fault

Transformers - The Inside View

MORGAN

SCHAFFER

SYSTEMS

leads the way in providing the electrical industry, worldwide, with innovatiand reliable field instruments for the early detection and diagnosis of faults in oil-filled electrical equipm

DETECT TRANSFORMER FAULTS AT THEIR EARLIEST STAGE

Hydrogen is produced to a greater or lesser extent by all transformer faults. Using the

PHA-1000 analyzer regularly is therefore the most cost-efficient way of screening

transformers for the presence of faults.

The PHA-1000 analyzer is a portab

gas chromatograph optimized for r

and accurate measurement of disso

hydrogen in oil.


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TRANSFORMER FAULTS

When oil-filled electrical equipment is subjected to thermal

and electrical stresses, faults may occur,usually in the form

of hot spots, partial discharges and ultimately arcing.The

energy released by these faults produces fluid breakdown

products known as fault gases.Analyzing transformeroil to detect and measure the concentration of these fault

gases allows transformer owners to detect and diagnose

incipient faults before they escalate into forced outages

and production losses.

HYDROGEN - A KEY GAS

Hydrogen is produced to a greater or lesser extent by all

faults and has a low solubility in oil and a high diffusibility.

These characteristics make hydrogen a reliable indicator of

a recent or existing fault and facilitate its detection at low

concentrations. Using the PHA-1000 analyzer regularlyis therefore a cost-efficient way of screening transformers

for the presence of faults as it is fast, accurate, and requires

no special training.

THE PHA-1000

The PHA-1000 is a portable gas chromatograph optimized

for the detection and measurement of hydrogen.The unit

features its own internal carrier gas supply (nitrogen) and

battery pack to provide a minimum autonomy of 15 hours

of continuous operation.

The instrument is used in conjunction with MSSunique

Shake Test syringe to analyze oil samples in the field within

a few minutes.Test duration is less than 120 seconds once

the sample has been injected in the analyzer. Gas samples

generated by MSSGP-100 gas extraction probe(1) or

from gas relays, can also be analyzed within minutes.

Calibration of the instrument is quick and easy: calibration

gas (SPANCYL) is injected in the instrument and analyzed

within 120 seconds.Pushing the calibration button then

adjusts the instrument reading to the actual SPANCYL

concentration. Once calibrated, the instrument is ready

to analyze Shake Test or other gas samples.

(1) The GP-100 probe is a passive device factory-installed on power and

instrument transformers for continuously producing a gas sample for on-site analysis

without oil sampling.

THE SHAKE TEST SYRINGE

The Shake Test syringe is a unique device used to extract

fault gases from transformer oil by shaking a fixed amount

of oil with a fixed amount of ambient air (refer to MSS

Technical Bulletin MS-30 for a complete description of

the sample preparation procedure).The resulting gas sample

is then injected in the PHA-1000 analyzer for rapid

measurement of dissolved hydrogen.SIEST WAY OF TESTING

SPECT TRANSFORMERS

TWEEN SCHEDULED

UTINE DGA TESTS.

Portable Hydrogen Analyzer

tw

oStart the instrand calibrate the supplied S

calibrating ga

one

Collect oil samples using MSS specially designedShake Test syringes.

ANALYZING OIL SAMPLES


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IF SIGNIFICANT AMOUNTS OF HYDROGEN

ARE DETECTED, OIL SAMPLES SHOULD BE OBTAIN

FOR A COMPLETE DGA ANALYSIS,

EITHER ON-SITE OR AT THE LABORATORY.

Model PHA-1000

FEATURES

Simple design and microprocessor-based electronics

Hydrogen specific

Measurement in less than 2 minutes

High sensitivity and wide range

Rechargeable gel-cell battery

TECHNICAL BENEFITS

No special training required

Fast, accurate and repeatable results

Analysis of GAS samples eliminates possibilities

of cross contamination

Can be used to test all kinds of oil-filled

electrical equipment, including LTC's, CTs and PTs

Good for 15 hours of continuous field use

h

ree

Prepare one of the samples by mixing the oil withambient air and shaking vigorously the syringe forextracting fault gases. Once the gas/liquid equilibriumhas been reached (after a total shaking time of60 seconds), inject the gas phase in the analyzer.

0

100

200

300

400

14/10/98 22/10/98 30/10/98

500

DissolvedHydrog

en(PPM)

Date

The performance of regular tests using the PHA-1000 is

instrumental in detecting and monitoring the severity of incipient

faults as shown in this graph of a 735 kV single phase transformer

known to have a partial discharge problem.

Dissolved Hydrogen vs TimeCOST BENEFITS

Operating and capital costs as well as consequential

damages can be avoided by using the PHA-1000

analyzer regularly:

Confirm the presence or absence of

a fault in the event of an alarm Reduce unplanned outages

Reduce downtime on false alarms

Optimize your maintenance schedule

Better control load on equipment

known to have faults

Prevent equipment failure and production losses

Monitor critical equipment during re-energizing

or commissioning

Monitor less critical equipment at a lower cost

A reading is obtained in less than 60 seconds.An additional time of approximately 60 secondsis required for completing the test cycle.

o

ur

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