Live Tank Circuit Breakers Buyer's Guide

20 Pages·2014·2.13 MB·English

Live Tank Circuit Breakers
Buyer’s Guide -
Section Motor Drive
Table of contents
Page
Introduction 3
Design features and advantages:
MD Motor Drive operating mechanism 8
Technical catalogues
MD Motor Drive operating mechanism 14
Others:
Quality control and testing 16
Inquiry data 18
2 Product information | Live Tank Circuit Breakers — Buyer’s Guide
ABB is the supplier of cutting edge
technology
Our task is to help our customers to a more reliable An important aspect of development work is our close dialog
power grid and sustainable society at large. This is why with customers, which enables us to find out about their ex-
we always strive for the leading position in research periences. Customers who demand more of our products give
and development. ABB has all the experience necessary us the best platforms to realize new innovations.
for successful development of power transmission
technology. Thought leadership
Our design work with constant improvements and simplifica-
This Buyer’s Guide concerns one of our true specialty areas tion of our products have resulted in; 550 kV circuit breakers
– high voltage circuit breakers – an area in which we are con- without grading capacitors; the Motor Drive with a servo mo-
stantly striving to improve product performance that delivers tor system that accurately controls and monitors the contact
real customer value. What has pushed development forward operation and the LTB D1 and E1 circuit breakers with MSD
has been the capability to increase availability at our custom- operating mechanism that provide fast and simple installation
ers’ installations by supplying reliable high voltage equipment. at site.
Other mile stones:
Development is a team effort
Our development team consists of highly qualified and expe- − 80 kA with only two breaking chambers per pole
rienced technicians with expert knowledge in, for example, − The DCB concept that enables smarter, safer and greener
plasma physics, materials physics, gas dynamics, mechanics substations
and high voltage technology. We also collaborate with others − Excellent earthquake performance suitable for seismic
with expert knowledge and skills, both at ABB and externally. regions
− The eco-efficient CO2 circuit breaker LTA
New technology requires careful testing.
ABB’s high power laboratory is among the world’s most modern and best equipped labs for switchgear technology, with facilities for testing circuit
breakers with rated voltages of up to 1200 kV and breaking currents of up to 80 kA.
Live Tank Circuit Breakers — Buyer’s Guide | Product information 3
Product portfolio
Live Tank Circuit Breakers
ABB has a complete portfolio and well proven technology for high voltage circuit breakers used in a number of
applications.
LTB D1 72.5 – 170 LTB E1 72.5 – 245 LTB E2 362 – 550 LTB E4 800
Standards IEC, IEEE IEC, IEEE IEC, IEEE IEC, IEEE
Rated voltage 72.5 – 170 kV 72.5 – 245 kV 362 – 550 kV 800 kV
Rated current up to 3150 A up to 4000 A up to 4000 A up to 4000 A
Circuit-breaking capacity up to 40 kA up to 50 kA up to 50 kA up to 50 kA
Ambient temperature -30 – +40 ºC -30 – +40 ºC -30 – +40 ºC -30 – +40 ºC
The circuit breakers can also be supplied for ambient temperatures down to -60 or up to +70 ºC.
ON ON
ON
HPL 72.5 – 300 HPL 362 – 550 HPL 800
Standards IEC, IEEE IEC, IEEE IEC, IEEE
Rated voltage 72.5 – 300 kV 362 – 550 kV 800 kV *)
Rated current up to 4000 A up to 4000 A up to 4000 A
Circuit-breaking capacity up to 80 kA up to 80 kA up to 80 kA
Ambient temperature -30 – +40 ºC -30 – +40 ºC -30 – +40 ºC
*) Up to 1200 kV on request
The circuit breakers can also be supplied for ambient temperatures down to -60 or up to +70 ºC.
4 Product information | Live Tank Circuit Breakers — Buyer’s Guide
Product portfolio
Disconnecting Circuit Breakers
As a complement to the basic versions of our circuit breakers, which are primarily designed for conventional
substation solutions, there is a disconnecting circuit breaker configuration with the disconnecting function integrated
into the breaking chamber. A safe interlocking system, composite insulators and a motor-driven grounding switch
provide personal safety.
DCB LTB 72.5 DCB LTB 145 DCB HPL 170-300 DCB 362-550
Standards IEC IEC IEC IEC
Rated voltage 72.5 kV 145 kV 170 - 300 kV 362 - 550 kV
Rated current up to 3150 A up to 3150 A up to 4000 A up to 4000 A
Circuit-breaking capacity up to 40 kA up to 40 kA up to 50 kA up to 63 kA
Ambient temperature -30 – +40 ºC -30 – +40 ºC -30 – +40 ºC -30 – +40 ºC
The disconnecting circuit breakers can also be supplied for other data on request.
For more information about DCBs, please see Application Guide 1HSM 9543 23-03en
Live Tank Circuit Breakers — Buyer’s Guide | Product information 5
Installations with
ABB Live Tank Circuit Breakers
LTB 420 E2 with current transformer IMB. Installation in Denmark. Substation in Oman with dessert climate. ABB equipment with LTB 145.
Disconnecting circuit breaker LTB DCB for 72.5 kV installed at a windfarm Disconnecting circuit breaker HPL DCB for 420 kV installed in a switching
in Sweden. station in Sweden.
Disconnecting circuit breaker LTB DCB for 145 kV with the operating 1100 kV by-pass switch in series compensation installation in China.
mechanism Motor Drive installed at refurbishment in Norway.
6 Product information | Live Tank Circuit Breakers — Buyer’s Guide
Exceeding Customer Expectations —
ABB Live Tank Circuit Breakers
ABB has over a century of experience in developing, Our apparatus are manufactured in a workshop where we
testing and manufacturing high voltage circuit breakers. continuously are working with improvements regarding
Through the years, our circuit breakers have acquired a quality, work environment, environment and safety.
reputation for high reliability and long life in all climates
and in all parts of the world.
Product range Type Maximum rated Maximum rated Maximum rated
voltage current breaking current
(kV) (A) (kA)
Circuit Breaker LTB LTB D1/B 170 3150 40
SF6 Auto-Puffer™ interrupter design LTB E1 245 4000 50
Spring or Motor Drive operating LTB E2 550 4000 50
mechanism(s) LTB E4 800 4000 50
Circuit Breaker HPL HPL B1 300 5000 80
SF6 puffer interrupter design HPL B2 550 5000 80
Spring operating mechanism(s) HPL B4 800 *) 4000 80
Controlled Switching Switchsync™
Condition Monitoring OLM2
*) Up to 1200 kV on request
Other data and/or special applications not covered in this Buyer’s Guide will be quoted on request.
How to interpret the type designations Other informations
The circuit breaker type designations are for simplicity rea- For information about Compact air insulated HV switchgear
sons not always given in full in this document. solutions with Disconnecting Circuit Breaker, please see sepa-
The product portfolio basically consists of three product rate Application Guide.
groups: Catalogue publication 1HSM 9543 23-03 en.
− LTB xxxD1/B (a single-unit circuit breaker) Further information about controlled switching applications and
− LTB xxxEy (a single-, two- or four-unit circuit breaker) Switchsync™ controllers is found in Controlled Switching,
− HPL xxxBy (a single-, two- or four-unit circuit breaker) Buyer’s Guide/Application Guide.
Catalogue publication 1HSM 9543 22-01en.
Circuit breakers of type LTB are SF6 gas circuit breaker of
self-blast design while circuits-breakers of type HPL are SF6 Information about the new CO2 insulated high voltage circuit breaker
puffer circuit breakers. LTA is found in brochure 1HSM 9543 21-06en
In the full type designation xxx indicates the rated voltage
and y indicates number of series connected breaking units
per pole. In this document where the circuit breakers are
described in general the voltage designations as well as the
number of series connected breaking units are omitted.
Live Tank Circuit Breakers — Buyer’s Guide | Product information 7
Motor Drive
Design features and advantages
A revolutionary concept for the operation What is a Motor Drive™?
of high voltage circuit breakers A Motor Drive is a digitally controlled motor directly
moving the circuit breaker contacts.
There is an increasing focus by power network operators to ABB has developed a digital controlled servomotor system
increase their operational returns on invested capital equip- capable of direct driving circuit breaker contacts with high
ment. An important step in this direction is the shift towards precision and reliability. The number of moving parts in the
condition-based maintenance in conjunction with utilizing a drive is reduced to just one – the rotating motor shaft.
plant that has inherently low maintenance requirements.
Applications
ABB has concentrated its development on designing high At present available for:
performance, high voltage equipment that requires minimum
of maintenance. The development has consequently focused − LTB D1/B (single- and three-pole operated)
on systems which predict a fault before it occurs and a warn-
ing is sent out. The warning can be used to avoid unplanned Design features
service interruptions and maintenance jobs can be carried out Motor Drive is essentially a digital system. The required operat-
according to the planned schedule. ing motions (trip & close) are programmed into a Control unit.
On command, the required operations are executed according
to the stored contact travel program and the motor is con-
trolled to move the circuit breaker primary contacts accord-
ingly. Energy charging, buffering, release and transmission
are essentially electrical and as such the mechanical system
is reduced to a minimum of moving parts. The critical parts in
the electrical operational chain are multiplied so that a redun-
dant system is achieved.
The inherent mechanical simplicity of Motor Drive
provides major advantages:
− Elimination of wearing components
− Reduction in operating forces
− Substantial reduction of the noise level during operation
− Inherent increased reliability by elimination of multiple-inter-
acting mechanical components
References
So far approximately 300 LTB D1/B with Motor Drive have
been installed in more than twenty countries all over the world.
Reference list can be presented on request.

LTB Circuit Breaker with ABB’s motor operated mechanism Motor Drive.
8 Product information | Live Tank Circuit Breakers — Buyer’s Guide
The Motor Drive platform offers many advantages and Motor Drive™ control cubicle
new capabilities: − Corrosion resistant housing of painted aluminum.
− Front and back doors equipped with doorstops and provi-
− Direct, active feedback control of contact motion sions for locking of door handles.
− Flexible permissive logic control of the circuit breaker − Insulated roof, doors and walls.
− Dramatic reduction of transients in substation auxiliary supply
− Increased operational security and improved asset man- Control panel
agement through advanced on-line monitoring Behind the front door is a panel that may be equipped differ-
ently, depending on customer specifc requirements. As a stan-
Robust modular design dard, the following equipment is included on the control panel:
The Motor Drive is designed for widely shifting conditions from
polar to desert climate. − Casing with instruction manual and final drawings
− Local open / close control
Reliability − Local / remote / discharge selector control
A circuit breaker must operate safely and reliably at all times. − Electromechanical operations counter – non-resettable
This is further improved by: − Indicators for charged/discharged capacitors
− Warning and alarm indicators
− Eliminated multiple-interacting mechanical components. − Contact position indicator
− Inherent self-monitoring capability. − MCBs for voltage supplies, heaters and socket outlet
− Redundant critical systems.
− Two independent voltage supplies. Behind the rear door of the control cubicle housing there is an
− Automatic switching to back-up supply. cable interface panel containing all necessary terminal blocks
for customer connections.
Simple erection
Installation and commissioning is easy.
Each motor drive is pre-tested together with the circuit
breaker poles and shipped to installation site in the form of a
few pre-assembled units. No adjustments necessary on site.
Condition monitoring
During normal operation of the circuit breaker the Motor Drive
continuously runs diagnostic algorithms to check both the
electrical and mechanical system. In event of problem a warn-
ing or fail signal will indicate to the substation control that
service is needed.
For service purposes the Motor Drive collects and stores a
wide array of data that can be retrieved either locally or from
the control board or remotely through a modem. With the ser-
vice software, MD Service installed on a laptop, the status of
the circuit breaker can be further investigated; detailed infor-
mation can also be downloaded and sent to ABB for detailed
analysis and failure diagnostics.
Motor Drive™ control cubicle with open front door.
Live Tank Circuit Breakers — Buyer’s Guide | Product information 9
Motor Drive
Design features and advantages
The silent circuit breaker Advantages
During operation the control system feeds the motor with pre- − Only one moving part, simple and reliable
cise amount of energy needed to obtain the desired speed of
the contacts. This smooth control together with the minimized − Optimal pre-programmed travel curve
mechanical system gives very low sound level of the circuit
breaker operation. Sound levels of 87 dB(A) have been mea- − Contact travel is compensated against ageing and changes
sured and can be compared to sound levels up to 100 dB(A) in ambient temperature by the adaptive control system
that have been registered for circuit breaker with spring drives.
− Condition monitoring is inherently possible without need for
In service diagnostic test — Micro-motion additional sensors
To obtain information about the condition of all the electrical
and mechanical components in the system, the main contacts − Low power requirement, no transient loads
can be moved a short distance without separation. This can
be executed automatically at programmed time intervals or by − Low mechanical stress and low noise levels
command via the MD Service serial communication interface.
− Redundant power supply
The Micro-motion operates under service of the circuit
breaker and does not interfere with the normal operation. If a − Optical serial communication port for external connection
trip command is initiated at the instant when a Micro-
motion is performed the normal operation will override and an − Micro-motion – functional test
unaffected open operation will be executed.
− Can be used in combination with Switchsync™ applications
(single-pole operation).
Contact
position
Approx. 0.5 mm
Closed
Contact separation
Open
Time (ms)
Micro-motion gives information about the condition of all the electrical and
mechanical components in the system.
10 Product information | Live Tank Circuit Breakers — Buyer’s Guide