1. An ACB prevents fires, property damage, and equipment breakage by protecting electrical circuits from fault currents.
2. It must safely conduct normal currents, trip automatically for over currents, and provide isolation when open.
3. Key functions include closing circuits, conducting current, opening circuits manually or automatically for faults, and providing isolation when open.
The substation is the part of a power system in which the voltage is transformed from high to low or low to high for transmission, distribution, transformation, and switching..etc
The substation is the part of a power system in which the voltage is transformed from high to low or low to high for transmission, distribution, transformation, and switching..etc
Guia montaje de tablero electrico domiciliario con circuito basicoNialito
Tema de la experiencia básica
A partir del estudio del esquema de montaje propuesto, conocerás la forma de conexión de un Circuito Mixto Domiciliario. Debes determinar, además, la cantidad de material, el montaje y conexionado de los dispositivos correspondientes en tu panel de trabajo.
Debes determinar los materiales a utilizar, de acuerdo al esquema presentado en la guía. Considera, básicamente, definir la cantidad y el tipo de dispositivo de sujeción.
Debes respetar el código de colores normalizados según la Norma Chilena Eléctrica 4/2003 para el cableado de tableros eléctricos.
El tablero que se montará en la sesión te permitirá proteger y comandar un circuito mixto de alumbrado. Se usará para el montaje un tablero sobrepuesto para 3 circuitos, con el objeto de instalar el disyuntor y el protector o interruptor diferencial. Con esta actividad habrás aprendido a usar y conectar disyuntores y diferenciales verificando su funcionamiento e importancia en las instalaciones eléctricas
Materiales y herramientas principales:
• 1 Tablero eléctrico sobrepuesto plástico para 3 Circuitos.
• 1 Disyuntor magneto térmico de 10 A Curva C
• 1 Interruptor Diferencial de 2 x 25 A, 30mA Curva C
• 2 Metros de alambre NYA 1,5 mm2 rojo, verde, blanco.
• Tornillos, pernos o roscalatas ( según corresponda de acuerdo al panel de trabajo a utilizar)
• Panel de trabajo
• Fuente de Alimentación Monofásica 220V/50Hz.
• Set de Destornilladores
• Set de alicates (punta, universal y de corte)
This Presentation gives information on How Generator in Power Plants are protected with State of art technologies. Also provide information how latest Power System Protection technologies are more reliable operation.
Installation Operation & Maintenance of 33kV & 11kV SwitchgearSheikh Nazmul Islam
In-Country Training On Operation, Maintenance, Protection & Control of 33/11 kV Substation Project Name: Design, Supply, Installation, Testing & Commissioning of 33/11 kV sub-stations with source end feeder bays. Contract No: BREB/UREDS/W-01A-001/02/2016-2017 BREB/UREDS/W-01A-002/03/2016-2017 BREB/UREDS/W-01A-004/04/2016-2017
In this presentation talk about:
Able to describe Substation.
Importance of substation.
Factors governing the selection of side.
Classification of Sub-Station.
Elements of a substation.
Operation of substation.
Hazards & safety.
Recent substation accident Bangladesh.
Cable Lugs and Terminals are electrical connectors used for connecting or terminating electrical cables to electrical appliances, transformers, junction boxes, control panels, etc. Connectors are also used for joining two power cables together. A lug has two ends, a tubular end through which cable is inserted and a flattened end which is bolted to the appliance or surface. After cable insertion, the lug can be crimped with a crimping tool or soldered or welded. Lugs come in different sizes corresponding to cable size and sizes are marked on the palm area of the lug. Suitable tool and die set is used to crimp them to cable or wire. The terminal ends are usually made of copper or aluminium and comes in different sizes and current carrying capacities. Proper care has to be taken and selection done according to low voltage or medium voltage requirements.
En este apartado, esta conformado de Componentes, estructura, diseño y funciones de los motores de Corriente Directa, al igual que un tema de Variadores de Velocidad sus tipos y funcionamiento.
Guia montaje de tablero electrico domiciliario con circuito basicoNialito
Tema de la experiencia básica
A partir del estudio del esquema de montaje propuesto, conocerás la forma de conexión de un Circuito Mixto Domiciliario. Debes determinar, además, la cantidad de material, el montaje y conexionado de los dispositivos correspondientes en tu panel de trabajo.
Debes determinar los materiales a utilizar, de acuerdo al esquema presentado en la guía. Considera, básicamente, definir la cantidad y el tipo de dispositivo de sujeción.
Debes respetar el código de colores normalizados según la Norma Chilena Eléctrica 4/2003 para el cableado de tableros eléctricos.
El tablero que se montará en la sesión te permitirá proteger y comandar un circuito mixto de alumbrado. Se usará para el montaje un tablero sobrepuesto para 3 circuitos, con el objeto de instalar el disyuntor y el protector o interruptor diferencial. Con esta actividad habrás aprendido a usar y conectar disyuntores y diferenciales verificando su funcionamiento e importancia en las instalaciones eléctricas
Materiales y herramientas principales:
• 1 Tablero eléctrico sobrepuesto plástico para 3 Circuitos.
• 1 Disyuntor magneto térmico de 10 A Curva C
• 1 Interruptor Diferencial de 2 x 25 A, 30mA Curva C
• 2 Metros de alambre NYA 1,5 mm2 rojo, verde, blanco.
• Tornillos, pernos o roscalatas ( según corresponda de acuerdo al panel de trabajo a utilizar)
• Panel de trabajo
• Fuente de Alimentación Monofásica 220V/50Hz.
• Set de Destornilladores
• Set de alicates (punta, universal y de corte)
This Presentation gives information on How Generator in Power Plants are protected with State of art technologies. Also provide information how latest Power System Protection technologies are more reliable operation.
Installation Operation & Maintenance of 33kV & 11kV SwitchgearSheikh Nazmul Islam
In-Country Training On Operation, Maintenance, Protection & Control of 33/11 kV Substation Project Name: Design, Supply, Installation, Testing & Commissioning of 33/11 kV sub-stations with source end feeder bays. Contract No: BREB/UREDS/W-01A-001/02/2016-2017 BREB/UREDS/W-01A-002/03/2016-2017 BREB/UREDS/W-01A-004/04/2016-2017
In this presentation talk about:
Able to describe Substation.
Importance of substation.
Factors governing the selection of side.
Classification of Sub-Station.
Elements of a substation.
Operation of substation.
Hazards & safety.
Recent substation accident Bangladesh.
Cable Lugs and Terminals are electrical connectors used for connecting or terminating electrical cables to electrical appliances, transformers, junction boxes, control panels, etc. Connectors are also used for joining two power cables together. A lug has two ends, a tubular end through which cable is inserted and a flattened end which is bolted to the appliance or surface. After cable insertion, the lug can be crimped with a crimping tool or soldered or welded. Lugs come in different sizes corresponding to cable size and sizes are marked on the palm area of the lug. Suitable tool and die set is used to crimp them to cable or wire. The terminal ends are usually made of copper or aluminium and comes in different sizes and current carrying capacities. Proper care has to be taken and selection done according to low voltage or medium voltage requirements.
En este apartado, esta conformado de Componentes, estructura, diseño y funciones de los motores de Corriente Directa, al igual que un tema de Variadores de Velocidad sus tipos y funcionamiento.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
#vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore#blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #blackmagicforlove #blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #Amilbabainuk #amilbabainspain #amilbabaindubai #Amilbabainnorway #amilbabainkrachi #amilbabainlahore #amilbabaingujranwalan #amilbabainislamabad
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
2. BASIC FUNCTION
■ ACB prevents a fire, a property damage, the breakage of an electrical
equipment on load side by protecting a circuit from the fault currents.
1. Circuit Closing
The closing operation of mechanism applies the current to the load. When
energized, some loads makes inrush current much greater than rated current (In)
(e.g. Motor takes in 7~8times of In for a few seconds). To prevent these over current
which causes the dangerous phenomena for contacts (Erosion by arcs), closing
operation should be prompt. If a circuit breaker is in accordance with all standard
cases, it should be able to endure 15~20 times of the rated current and be opened
promptly for the faults occurred during closing operation or after it has closed.
2. Current Conducting
A circuit breaker must not be exceeding an acceptable temperature rise
under normal current conducting and there must be safe current conducting within
specified breaking time under over current. Furthermore, if a circuit breaker is of the
discriminated type, it must has the structure which can withstand the high
electrodynamics to accept the short-circuit current while a circuit breaker in
downstream is operating to break it.
3. BASIC FUNCTION
3. Circuit Opening, Current Breaking
1) Current can be broken manually or remotely by voluntary operation on
mechanism.
2) A circuit breaker opens a circuit automatically under condition of current which
may has any values at this time by an auxiliary trip unit (Under voltage, Ground fault,
etc.)
3) A circuit breaker opens a circuit automatically against the over current because it
is operated by OCR (the trip unit) even if it is in the closed position.
4. Isolation
When a circuit breaker is open, a certain isolation level is required between
charging and non-charging parts. The Isolation Level is decided by following tests.
1) A maximum leakage current test under rated using voltage (Max. Ue)
2) An impulse voltage
4. BASIC FUNCTION
■ There are following breaking principles regarding over current.
1. Instantaneous trip
When short-circuit current flows in, ACB trips instantly to minimize side
effect due to the accident on load side. It is called instantaneous trip.
2. Time delay breaking
When abnormal current flows in such as inrush current of transformer or
condenser, and starting current of motor, ACB keeps the conducting condition for a
regular time and break the current if it is continuously remained. In case of short-
circuit, ACB minimizes the damage from accident by keeping the circuit for the time
previously set concerning the operating time of branch breakers under selective
discrimination. However, it breaks the circuit after the delayed time in case
abnormal current continuously flows in due to the breaking failure of branch
breakers. It is called as Time delayed breaking.
5. BASIC FUNCTION
3. Overload trip
If the current which exceeds the rated current flows in continuously, the
cable is getting hotter and it causes the big fire. Therefore, ACB breaks the
current before the temperature of cable reaches the dangerous level. It is called
overload trip.
4. Ground-fault trip
Ground fault defines as current flows into the ground from circuit or charging
part of load due to breakdown. If ground fault current flows, it is inducted to other
cables nearby owing to electronic induction, voltage level is risen and it finally cause
severe effects or damage on other device. Furthermore, in case personnel hands are
touched, it may result in electrical shock. Ground fault breaking is to prevent any
possible accident occurred from ground fault.
9. MAIN NAMEPLATE
TYPE
AH 630AF~6300AF
Phase Array
D Standard RST(N) For
630AF~2000AF
W Reverse NRST
For 630AF~2000AF
E Standard RST(N) For
2000AF~4000AF
X Reverse NRST
For 2000AF~4000AF
G Standard RST(N) For
4000AF~6300AF
Z Reverse NRST
For 4000AF~6300AF
AH – 10 D 3 – 10 A
1 2 3 5 6
4
1 3
Ampere frame
06 630AF
08 800AF
10 1000AF
13 1250AF
~ ~
32 3200AF
40 4000AF
50 5000AF
63 6300AF
2
No. of pole
3 3 pole
4 4 pole
4
Reted current (CT Spect.)
02 200A
~ ~
63 6300A
5
Connections
J Manual [Draw-out type]
A Automatic [Draw-out type]
H Horizontal [Fix type]
V Vertical [ Fix type]
M Line : Horizontal, Load :
Vertical [Fix type]
N Line : Vertical, Load :
Horizontal [Fix type]
6
10. Cradle nameplate
AL – H16D 3 – A H F S
1 2 3 5 6
4 7
1
2
3
5
6
4
7
LS ACB
CRADLE
Rated Current & frame
H06~16D AH-06~16D
H20D AH-20D
H20~32E AH-20~32E
H40E AH-40E
H40~50G AH-40~50G
H63G AH-63G
No. of pole
3 3 pole
4 4 pole
Terminal
connections
J Manual
connection
A Automatic
connection
Connections
H Horizontal type
(H20D inapplicable)
V Vertical type
M Mixed type
Line : Horizontal
Load : Vertical
(H20D inapplicable)
N Mixed type
Line : Vertical
Load : Horizontal
(H20D inapplicable)
P Front type
(40E, 50FG, 63G
inapplicable)
Safety
Shutter
E Without
safety
shutter
F With
safety
shutter
Arc cover
N Without
Arc cover
S With
Arc cover
11. SECONDARY NAMEPLATE
Motor rated voltage
MA Without
motor
M1 AC/DC
100V~130V
M2 AC/DC
200V~250V
M2 D2 D2 BX AC6 U2 A4
1 2 3 4 5 6 7
1
Closing coil rated
voltage
D0 Without
Closing coil
D1 AC/DC
100V~130V
D2 AC/DC
200V~250V
2
Aux.contact &
charging types
AX Standard OFF-
Charge 3a3b
AC Standard ON-
Charge 3a3b
BX Standard OFF-
Charge 5a5b
BC Standard ON-
Charge 5a5b
4
Shunt coil rated
voltage
D0 Without
Shunt coil
D1 AC/DC
100V~130V
D2 AC/DC
200V~250V
3 Trip relay
AG6 L/S/I/G Protection, without Comm.,
AC/DC100V~250V, 50Hz
AC6 L/S/I/G Protection, with Comm.,
AC/DC100V~250V, 50Hz
5
UVT coil rated
voltage
U0 Without
UVT coil
U1 AC/DC
100V~130V
U2 AC/DC
200V~250V
6 Option
C Counter
A4 AL1+MRB+RES
(AC200~250V)
7
12. CHARGING THE CIRCUIT BREAKER
Manual charging
1. Pull the handle down 7~8 times until you hear a "clack".
2. When the closing spring is completely charged, the charging indicator shows
“CHARGED”.
The springs in the circuit breaker operating mechanism must be charged to store
the energy required to close the main contacts. The springs may be charged
manually using the charging handle or the optional motorize.
13. CHARGING THE CIRCUIT BREAKER
Electrical charging
1. Energize terminal U1~U2 for automatic charging
2. When the closing spring is completely charged, the geared motor is stop
automatically and the charging indicator shows “CHARGED”.
U1
U2
Power supply
for motor
14. MANUAL OPERATION
■ Manual closing
1. Push ON button.
2. The breaker will be closed.
3. The ON/OFF indicator
shows “ON” and the charging
indicator shows
“DISCHARGED”.
■ Manual opening
1. Push the OFF button and
breaker will be tripped.
2. The ON/OFF indicator
shows “OFF”.
15. ELECTRICAL OPERATION
■ Electrical opening
1. Remote opening can be made by energizing the shunt trip device or under
voltage trip device.
2. In the case of SHT, apply the rated voltage to the terminal C1 and C2.
3. In the case of UVT, remote opening is also possible by applying a short -
circuit across terminals D1 and D2 of the UVT controller.
■ Electrical closing
Remote closing can be made by energizing the closing coil
(CC). Apply
the rated voltage to the control terminals A1 and A2 and close the
breaker.
17. Accessories Configurations
When a circuit breaker is tripped by OCR which
operates against the faulty current
(Over Current Relay), Trip Alarm switch provides the
information regarding the trip of circuit
breaker by sending the electrical signal from the
mechanical indicator on main cover of main
circuit breaker or internal auxiliary switch. (Installed
at the inside of circuit breaker)
Trip Alarm Contact [AL]
19. Accessories Configurations
Following tripping, this function resets the "fault trip" alarm contacts(AL) and
the mechanical
indicator(MRB) and enables circuit breaker closing.
Push button swich : AC 125V 10A, AC 250V 6A, DC 110V 2.2A, DC 220V 1.1A
Registive load
Remote Reset Switch [RES]
25. Draw-in operation
1. Pull the extension
rails of cradle forward
2. Put the breaker on the rail by
using lifting device. Please
check if the circuit breaker fits
well to the cradle.
3. Slowly push the circuit
breaker by moving the rail
handle until it stops.
26. Draw-in operation
4. Keep pushing the OFF button when the circuit breaker in a trip condition, and insert a
handle to the body of the circuit breaker.
5. Check the draw-out handle properly inserted and then push the lock plate and turn
the draw-out handle clockwise in order to insert the breaker.
6. When the breaker reaches the TEST position, the lock plate automatically projects
and the draw-out handle is locked.
7. Push in the lock plate and turn the draw-out handle again clockwise until the lock
plate projects, the inserting operation is finished. At this time, the draw-out position
indicator shows CONNECTED position.
Operating handle of cradle only can be inserted when
pushing OFF button.
If locking device for draw in/out protrudes, stop handle
operation and move to next procedure as it indicates the
complete operation of ongoing process.
28. Draw-out operation
■ Draw-out operation procedure
1. Keep pushing the OFF button when the circuit breaker in a trip condition, and
insert a handle to the body of the circuit breaker.
2. Check the draw-out handle properly inserted and then push the lock plate and
turn the draw-out handle counterclockwise in order to insert the breaker.
3. When the breaker reaches the TEST position, the lock plate automatically projects
and the draw-out handle is locked.
4. Push in the lock plate and turn the draw-out handle again counterclockwise until
the lock plate projects, At this time, the draw-out operation is finished with indicator
which shows DISCONNECTED position.
31. Draw-out operation
5. The circuit breaker indicated with ‘DISCONNECTED’ can be separated safely from
the cradle by removing a draw in/out handle and releasing right and left locks.
6. Use a lifting hook to separate a circuit breaker from a cradle.
32. Phase Array
R S T N N R S T
Standard type RST(N) Reverse phase type NRST
34. Installation Recommendation
2. Bus-bar connections
For busbar connection, connect access parts with a provided torque and
fix with parallel installing the support not to apply terminal weight to circuit
breaker.
35. Digital Trip Relay
L/S/I/G L/S/I/G L/S/I/G L/S/I/G
Self Power Current (R/S/T/N) Current, Power,
Energy, Frequency
Current, Power,
Energy, Frequency
Self Power
AC/DC 100~250V
AC/DC 24~60V
Self Power
AC/DC 100~250V
AC/DC 24~60V
Self Power
AC/DC 100~250V
AC/DC 24~60V
10 Records
(Fault/Current/Date and
Time)
256 Records
(Fault/Current/Date
and Time)
256 Records
(Fault/Current/Date and
Time)
256 Records
(Fault/Current/Date
and Time)
256 Records
(Fault/Current/Date and
Time)
36. Digital Trip Relay
① Graphic LCD: Indication of measurement and information
② LED: Indication of trip info. and overload state
Comm: LED indicating comm. state (Blink when running)
Ig: LED indicating ground-fault
Isd/Ii: LED indicating short-time or instantaneous tripping
Ir: LED indicating long-time delay
SP: Self-protection LED and battery test LED
Alarm: LED indicating an overload
(Turn on above 90%, Blink above 105%)
③ Key: Move to menu or reset
Reset/ESC: Fault reset or ESC from menu
Enter: Enter into secondary menu or setting input
Up/Down: Move the cursor up/down on screen or
increase/decrease a setting value
Right/Left: Move the cursor or setting right/left on screen
(Rotation)
Menu: Menu display ↔ Measurement display
④ Ir: Long-time current setting, tr: Long-time tripping delay
setting
⑤ Isd: Short-time current setting, tsd: Short-time tripping
delay setting
⑥ Ii: Instantaneous current setting
⑦ Ig: Ground fault current setting, tg: Ground fault tripping
delay setting
⑧ Test terminal: OCR test terminal (Connected with OCR
tester)
37. Digital Trip Relay
Voltage module
For P and S type Trip relay, separate voltage module is provided to measure other
element besides current
- Voltage input range: AC 60~690V
68. Operating Characteristic
The function for overload protection which has time delayed
characteristic in inverse ratio to fault current.
1. Standard current setting knob: Ir
1) Setting range in P type and S type: (0.4-0.5-0.6-0.7-0.8-0.9-
1.0)×In
2) Setting range in N type and A type: (0.4 ~1.0)×In
- Iu: (0.5-0.6-0.7-0.8-0.9-1.0)×In
- Ir: (0.8-0.83-0.85-0.88-0.9-0.93-0.95-0.98-1.0)×Iu
2. Time delay setting knob: tr
- Standard operating time is based on the time of 6×Ir
- Setting range: 0.5-1-2-4-8-12-16-20-Off sec (9 modes)
3. Relay pick-up current
- When current over (1.15)×Ir flows in, relay is picked up.
4. Relay operates basing on the largest load current among
R/S/T/N phase.
Long-time delay (L)
69. Operating Characteristic
Short-time delay (S)
The function for fault current (over current) protection which has
definite
time characteristic and time delayed in inverse ratio to fault
current.
1. Standard current setting knob: Isd
- Setting range: (1.5-2-3-4-5-6-8-10-Off)×Ir
2. Time delay setting knob: tsd
- Standard operating time is based on the time of 10×Ir.
- Inverse time (I2t On ): 0.1-0.2-0.3-0.4 sec
- Definite time (I2t Off): 0.05-0.1-0.2-0.3-0.4 sec
3. Relay operates basing on the largest load current among R/S/T/N
phase.
4. Relay can operate at instantaneous current through ZSI.
70. Operating Characteristic
Instantaneous (I)
The function for breaking fault current above the setting value
within
the shortest time to protect the circuit from short-circuit.
1. Standard current setting knob: Ii
- Setting range: (2-3-4-6-8-10-12-15-Off)×In
2. Relay operates basing on the largest load current among
R/S/T/N phase.
3. Total breaking time is below 50ms.
71. Operating Characteristic
Ground Fault (G)
The function for breaking ground fault current above
setting value
after time-delay to protect the circuit from ground fault.
1. Standard setting current knob: Ig
- Setting range: (0.2-0.3-0.4-0.5-0.6-0.7-0.8-1.0-Off)×In
2. Time delay setting knob: tg
- Inverse time (I2t On): 0.1-0.2-0.3-0.4 sec
- Definite time (I2t Off): 0.05-0.1-0.2-0.3-0.4 sec
3. Ground fault current =R+S+T+N(Vector Sum)
4. Relay can operate at instantaneous current through ZSI.
5. The protection for ground fault is a basic function of Trip
relay (Internal CT type)