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Transformer Diagnostics
( 1 items )
Power transformers are subject to many kinds of physical damage
that can be nearly impossible to detect – until the transformer fails!
System faults, short circuits, aging or even handling during
transportation may compromise the mechanical structure of a
transformer. Because these problems are difficult to detect, they
usually go unnoticed and worsen over time, leading to loss of
performance and possibly failure.
Until recently, your options for dealing with these critical
problems were limited. You could ignore them and hope for the best. Or,
if you suspected damage, you could detank the transformer to make a
costly and time consuming visual inspection. And even that might not
reveal the damage.
At Doble Engineering, we have built on our experience with transformers to create the M4000 Series and M5000 Series.
The M4000 Series uses patented state-of-the-art technology to
accurately evaluate the condition of substation high voltage power
apparatus, even under conditions of high electrostatic and
electromagnetic interference. For more information, go to:
Doble’s M5000 Series uses Sweep Frequency Response Analysis (SFRA)
for detecting mechanical failure or movement of windings due to short
circuits, mechanical stresses or transportation. Use it to ensure
transformer performance, reduce maintenance cost, and increase the
service life of transformers.
For more information on Doble's SFRA Diagnostic instruments, go to one of the following pages:
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Surge Arrester Monitoring
( 1 items )
Surge Arresters Monitoring
Doble's TransiNor office created the LCM II System for managing your
surge arrester monitoring needs. This portable, cost-effective system
uses Windows© LCM II Software and created a unique identification of
each surge arrester for easy data management. LCM II can be used for
continuous monitoring of one or more arresters to investigate details
in leakage current changes versus the length of time in which they
occur.
LCM II
LCM II is the complete system for condition monitoring of your Metal Oxide Surge Arresters.
«No interruption of service operation»
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Partial Discharge Detection
( 1 items )
Doble's TransiNor office created APDA for Condition Monitoring of Medium Voltage Cable Terminations and Cable Joints. APDA gives you the ability to check cable accessories without disturbing normal service operation, and detect defects preventing possible breakdown. With the APDA you'll have an optimum economic condition based maintenance and renewal program.
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Oil/Materials Analysis
( 2 items )
Doble has created the DOMINO Moisture-in-Oil sensor to manage the
state of your bushings/CTs, transformers and circuit breakers. The DOMINO Moisture-in-Oil
sensor is an accurate, simple, robust and versatile instrument,
measuring just that: moisture in oil in terms of ppm and relative
saturation plus the added benefit of temperature. It is a sensor that
provides for the continuous reliable measurement of the water content
of electrical insulating liquids and other types of oils.
The Doble Laboratory can provide answers and solutions to your
problems based upon quality data from a wide scope of testing
capabilities and a rich experience in apparatus diagnostics. We can
help you develop the most cost-effective testing program for condition
assessment or help identify and solve apparatus problems. All test
reports include an analysis of the data and recommendations for
remedial action if warranted.
DOMINO
Doble Engineering developed one of the first analytical techniques
for the measurement of dissolved water in oil and also developed
probably the first on-line moisture monitors, the DOMINO.
DOBLE LABORATORY
The Doble Laboratory is fully equipped to perform a wide variety of
tests on insulating materials, with more than fifty tests offered on a
routine basis.
CONTINOUS ONLINE DIAGNOSTICS
Doble has created a variety of online devices to manage the state of your bushings/CTs, transformers, circuit breakers, and other apparatus.
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Insulation Analysis
( 3 items )
Doble's Insulation Analysis equipment is the world's most advanced
test system for power apparatus. The M4000 is the leading system for
evaluating the condition of high voltage power apparatus. It sets the
standard for accuracy, reliable test results, and intelligent
diagnostics for customers worldwide.
The M4100, together
with the DTA Expert System Software, represent the new generation of
smart, automated test equipment used to determine the condition of high
voltage substation apparatus.
M4000
This
multi-purpose instrument can perform a variety of tests and diagnostics
on a wide range of power apparatus, ensuring that your testing program
is a success.
DTA Software
The
DTA (Doble Test Assistant®) software module takes users through the
entire test process step by step. DTA includes expert system software
that analyzes results according to 3,700 rules and guides the user to
the appropriate maintenance decision—providing answers, not just data.
M2H MCM
The
new M2H - MCM (M-series Control & Measurement) Insulation Analyzer
brings automatic Power Factor measurement techniques to M2H users in an
easy to use instrument package. The M2H - MCM provides a graphical user
interface, automated measurements, and data management to M2H users,
producing stable test results and fast test times
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Continuous On-line Diagnostics
( 2 items )
Doble has created a variety of online devices to manage the state of your bushings/CTs, transformers, circuit breakers, and other apparatus.
DOMINO
Obtaining accurate moisture and temperature data is necessary to
determine the condition of electrical apparatus or its insulating
liquid. However, the data by itself may not always be sufficient to
identify potential problems, especially in transformer systems. Doble
Engineering developed one of the first analytical techniques for
measuring dissolved water in oil and the first online moisture monitor:
DOMINO.
Insulator Pollution Monitor (IPM)
The IPM is designed to perform continuous online monitoring of
external pollution effects on high-voltage insulators and other
insulator housings, such as surge arresters and bushings.
Intelligent Diagnostic Devices
Doble created Intelligent Diagnostic Devices (IDDs), a family of
continuous online diagnostic devices for power system apparatus
intended to detect incipient problems with bushings/CTs, transformers,
and circuit breakers. Now you can safely manage progressive problems
and efficiently schedule corrective action. There are three types of
IDD instruments: Moisture, Bushings, and Dissolved Gas Analysis.
LCM II
TransiNor created the LCM II to monitor the condition of
high-voltage Metal Oxide Surge Arresters (MOSAs) in service. This
complete system for condition monitoring measures the resistive
component of the MOSA leakage current. Increased resistive leakage
current indicates a higher risk of MOSA breakdown.
1_Domino_Brochure_9-2007.pdf (260.92 kB)
DominoUSS_Brochure_4-3-07.pdf (369.71 kB)
IPMBrochure.pdf (1.15 MB)
IDD_Bushing_9-2007.pdf (221.84 kB)
IDD_Dissolved_Gas_10_04.pdf (220.01 kB)
IDD_Moisture_10_04.pdf (130.11 kB)
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Protection Diagnostics
( 10 items )
Doble Protection Diagnostic Instruments are compact, rugged and field portable instruments used worldwide by test engineers to diagnose and calibrate electromechanical and numerical schemes. The instruments are designed to provide fully automated steady-state, dynamic and transient testing capability, in the field as well as in a laboratory environment
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Circuit Breaker Diagnostics
( 5 items )
Circuit Breaker Diagnostics
Doble's circuit breaker diagnostic products provide you a method for
testing everything from simple circuit breakers to complex ones, using
a single, field-portable, rugged instrument and Windows-based software.
The modular design allows you to acquire a circuit-breaker test system
matched to today's specific testing applications and to upgrade in the
field to test different or more complex apparatus.
Doble offers the following circuit breaker diagnostic instruments and software:
