LSIS Susol User manual

Instruction manual of
Susol & Metasol ACB
1. Normal/Special service condition 2. Altitude and Insulation clearance
1. Type of Susol/ Metasol series 2. Type of OCR/Cradle series 3. Ratings
1. Weight 2. Dimension
1. Handling 2. Storage
1.Fixed type 2. Draw-out type 3. Precaution and installation of insulation barrier
4.Bus-BAR Connection
1. Manual operation 2. Electrical operation 3. Draw-in operation 4. Draw-out operation
1. Inspection and maintenance cycle 2. Defects and troubleshooting guideline
1. Internal structure and components 2. Basic function and breaking operation
A. Safety precaution …………………………………………...………………………………………… 1-1 ~ 1-3
B. Service condition……………………………….………...…………………………………………… 2-1 ~ 2-2
C. Structure and operation………………….………………………………………………………… 3-1 ~ 3-3
D. Ratings ………………………………………………………………………………………………………… 4-1 ~ 4-8
E. Weight & Dimension…………………………………………………………………………………… 5-1 ~ 5-3
F. Unpacking……………………….……………...……..…….………………………………………………… 6-1 ~ 6-2
G. Handling and Storage ……….……………………………………………………………………… 7-1 ~ 7-2
H. Installation…………….……………………………………………………………………………………… 8-1 ~ 8-3
I. Operation……………….…………………………...…………………………………………………………… 9-1 ~ 9-4
N. Inspection and troubleshooting …………………………………………………………14-1 ~ 14-2
O. Wiring diagram of control cIrcuit ………………………………………………………15-1 ~ 15-2
J. Trip relay externals and configuration……………………………………………… 10-1 ~ 10-3
1. Knob setting 2. Key and LED configuration 3. Connector
K. Trip relay setting………………………………………………………………………………………11-1 ~ 11-5
1. Long-time delay and short-Time Delay 2. Instantaneous and ground-fault
L. Trip relay A type device operation (A type)………………………………………12-1 ~ 12-5
1. Button configuration 2. Measurement display 3.Relay setting display
M. Tripping curves………………………..………………………………………………………………13-1 ~ 13-5
1. Long-time, short-time and instantaneous protection 2. Ground-fault protection, IDMTL
1. Safety precaution 2. Warning 3. Danger 4. Warning
1. Receiving 2. Unpacking 3. Check point and caution
P. Other operation …………………………………………………..……………………………………16

■Outline for safety operation
This manual does not cover all possible contingencies, variations and details that may arise
during installation, operation or maintenance of this equipment. If the user has questions
regarding a particular installation, contact the local LSIS sales office. For application
information, consult your nearest LSIS sales office.
The information contained herein is general in nature and not intended for specific application
purposes. It does not relieve the user of responsibility to use sound practices in application,
installation, operation, and maintenance of the equipment purchased. LSIS’s reserves the right
to make changes in the specifications shown herein or to make improvements at any time
without notice or obligations. If a conflict arise between the general information contained in
this publication and the contents of drawings or supplementary material or both, the latter
shall take precedence
■Qualified person
For the purpose of this manual and product labels, a qualified person with suitable knowledge of
installation, construction, operation, or maintenance of the equipment and the hazards involved.
In addition, this person has the following qualifications:
(a) is trained and authorized to energize, de-energize, clear, ground, and connect circuits and
equipment in accordance with established safety practices.
(b) is trained in the proper care and use of protective equipment such as rubber gloves, hard hat,
safety glasses or face shields, flash clothing, etc., in accordance with safety practices.
(c) is trained in rendering first aid.
These instructions do not cover all details or variations in equipment, nor to provide for every
possible contingency to be met in connection with installation, operation, or maintenance. In case
particular problems arise which are not covered sufficiently for the purchaser’s purposes further
information should be desired or the matter should be referred to the local LSIS’s sales office.
The contents of this instruction manual shall not become part of or modify any prior or existing
agreement, commitment or relationship.
A. Safety Precaution
■Danger, Warning, Caution
Read these instructions carefully and look at the equipment to become familiar with the device before
trying to install, operate, or maintain it.. The following special messages may appear throughout this
manual to warn of potential hazard and to call attention to additional information which clarifies or
simplifies a procedure.
Safety precaution is classified by danger, warning, caution and the meaning is as follows.
■Dangerous procedures
In addition to other procedures described in this manual as dangerous, user personnel must
adhere to the following:
1. Always work only on de-energized equipment. Always de-energize a contactor, and remove it
from the equipment before performing any tests, maintenance or repair.
2. Always let an interlock device or safety mechanism perform its function without forcing or
defeating the device.
4. 온도 센서
1. Safety precaution
Danger Not following the instruction may result in serious
injury and even death
Not following the instruction may result in serious
injury and even death
Warning
Caution Not following the instruction may result in minor or moderate injury,
or property damage
1-1

Caution
1. Be sure to tighten the terminal screws to the torque specified in the instruction manual.
2. Do not install in areas subject to high temperature, high humidity, dust, corrosive gas, vibrations, and
shocks. To do so may result in malfunction or fire.
3. To get ACB tripped automatically, always clear the source of the malfunction before closing the ACB
again. Failure to do so may result in fire.
4.Terminal screws should be checked and tightened periodically. Failure to do so may result in fire.
5. Use the ACB in 50/60Hz. Failure to do so may result in malfunction or fire.
■HAZARD OF BODILY INJURY OR EQUIPMENT DAMAGE
1. Only qualified electrical workers with training and experience on high voltage circuits should
perform work described in this set of instructions. These workers must understand the hazards
involved in working with or near high voltage equipment. Such work should be performed only after
reading this complete set of instructions.
2. The successful operation of Susol ACBs depends upon proper handling, installation, operation, and
maintenance. Neglecting fundamental installation and maintenance requirements may lead to
personal injury as well as damage to electrical equipment or other property.
3. Susol ACBs have features designed to prevent unsafe operation, but it is not possible to eliminate
every hazard with these features. Therefore, the person using this device is responsible for
recognizing the potential hazards, for wearing protective safety equipment, and for taking adequate
safety precautions.
4. Do not make any adjustment to the equipment or operate the system with safety features removed.
Contact your local LSIS representative for additional instructions if the Susol ACB does not function
as described in this manual.
5. Before performing visual inspections, tests, or maintenance on this device, disconnect all sources of
electric power. Assume that all circuits are live until they have been completely de-energized, tested,
grounded, and connected. Pay particular attention to the design of the power system. Consider all
sources of power, including the possibility of back feeding.
6. Before replacing covers or closing doors, carefully inspect the bus work area for tools and objects left
inside the equipment. Use care while removing or installing panels so that they do not extend into
energized bus.
7. Before making any electrical connection, take every precaution to see that all connections are de-
energized and grounded.
8. Introducing foreign objects into this equipment can cause a short circuit which can result in severe
damage, personal injury, or death. Short circuits can release large amounts of energy due to a rapid
expansion of super-heated, ionized gases. Products of this instantaneous expansion can quickly
engulf and burn personnel before preventive action can be taken. The short circuit source can cause
additional injuries by propelling personnel or objects several feet from the equipment. Some foreign
objects that can cause short circuits are tools, test leads and instruments not designed for high
voltage circuits, wire, and other conducting or semi conducting materials. Workers must also be
careful to keep clothing and body parts out of the equipment. Failure to observe these precautions
could result in severe personal injury, death, or equipment
Danger
4. 온도 센서
2. Caution
4. 온도 센서
3. Danger
A. Safety Precaution
1-2

■Receiving
A visual inspection –inside and out –should be performed immediately upon receipt of the ACB and
before removing it from the truck. Shipping papers should be checked to ensure all boxes or other
accompanying pieces have been received. If any damage or shortages are evident, a claim should be
filed at once with the carrier, and the nearest LSIS sales office. Claims for shortages or other errors must
be made in writing to LSIS within 30days after receipt of ACB. Failure to do so constitutes unqualified
acceptance and a waiver of all such claims by the purchaser.
■Handling
Removable lifting plates are provided on the top of the Susol ACB structure for insertion of hooks to lift the
complete structure. This is the only recommended method of moving the Susol ACB structure. Extreme
care should be used not to damage or deform the unit if other moving methods are employed.
■Storage
If it is necessary to store the equipment before installation, keep it in a clean, dry location with ample air
circulation and heat to prevent condensation. Like all electrical apparatus, these units contain insulation
that must be protected against dirt and moisture. Outdoor units may be stored outside only if roof caps
are installed, space heaters energized and any openings are enclosed.
■Lifting Instructions
1. Do not pass cables or ropes through support holes.
2. Always use load rated shackles or safety hooks in support holes.
3. Rig so that legs of sling are no less than 45 degrees from horizontal.
Warning
■Moving
A crane or hoist can also be used to handle the breaker, if the lifting device is not available. If a forklift is
utilized, the following precautions should be taken when moving circuit breakers:
1. Keep the breaker in an upright position only.
2. Make sure the load is properly balanced on the forks.
3. Place protective material between the breaker and the forklift to prevent bending or scratching.
4. Securely strap the breaker to the forklift to prevent shifting or tipping.
5. Excessive speeds and sudden starts, stops, and turns must be avoided when handling the breaker.
6. Lift the breaker only high enough to clear obstructions on the floor.
7. Take care to avoid collisions with structures, other equipment, or personnel when moving the breaker.
8. Never lift a breaker above an area where personnel is.
4. 온도 센서
4. Warning
A. Safety Precaution
1-3

■Normal service conditions
If under ordinary conditions the following normal working conditions are all satisfied, Susol ACB should be
used under this condition unless otherwise specified.
1) Ambient temperature
A range of max. +40℃to min. -5℃is recommended. However, the average temperature of 24 hours
does not exceed +35℃.
2) Altitude
2,000m or less.
3) Environmental conditions
The air must be clean, and the relative humidity does not exceed 85% at a max. of +40℃and 90% at
20℃. Do not use and store in presence of corrosive or ammonia gas.
(H2S ≤ 0.01ppm,SO2 ≤ 0.01ppm,NH3 ≤ a few ppm)
4) Installation conditions
When installing Susol ACB, refer to catalogue or the installation instructions in the instruction manual.
5) Storage temperature
A range of max. +60℃to min. -20℃is recommended.
6) Replacement
Approx. 15 years (depends on number of breaking of over current or service condition). Please see
maintenance and inspection for further detail.
2. Special service conditions
In the case of special service condition, modified air circuit breakers are available. Please specify when
ordering. Service life may be shorter, it depends on service conditions.
1) Special environmental conditions
If it is used at high temperature and/or high humidity, the insulation durability and other electrical or
mechanical features may deteriorate. Therefore, the breaker should be specially treated. Moisture
fungus treatment with increased corrosion-resistance is recommended. When using products under
this condition, please contact LS service team or nearest sales representatives.
2) Special ambient temperature
If the ambient temperature exceeds +40℃, reduce the continuous conducting current for a use
referring to Table. A.
3) Special altitude
If it is used at the 2,000m or higher the heat radiation rate is reduced and the operating voltage,
continuous current capacity and breaking capacity are decreased. Moreover the durability of the
insulation is also decreased owing to the atmospheric pressure. Contact us for further detail.
B. Service condition
1. Normal/Special service condition
Table A. The compensation of rated current according to ambient temperature
2-1

■Altitude
Susol ACB is designed for operation at altitudes under 2000m. At altitudes higher than 2000m, change
the ratings upon a service condition.
Altitude [m]
Item 2000 3000 4000 5000
Withstand voltage [V] 3500 3150 2500 2100
Average insulating voltage [v] 1000 900 700 600
Max. using voltage [V] 690 590 520 460
Current compensation constant 1 x In 0.99 x In 0.96 x In 0.94 x In
2. Altitude and Insulation clearance
■Insulation clearance
When drawing the electric power supply panel, please keep the distance of Insulation clearance
between Susol ACB and panel as listed in table.
■Minimum insulation clearance
The dimension of all charging parts should be over the minimum insulation clearance.
Insulating voltage (Ui) Min. insulation clearance
(X min)
600V 8 mm
1000V 14 mm
B. Service condition
B
** Option installation : ”0”
Type A B
Fixed
N/S 50 150
H50 150
Draw
out
N/S 50 150
**
H50 0
AA
B
(H)
(N,S)
2-2

■Internal configuration
C. Structure and Operation
1. Internal structure and components
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18
19
20
16
17
18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
■Components
1
2
3
4
5
6
7
8
9
10
Control terminal block
Control terminal
Auxiliary switches
Closing, Trip, UVT Coil
Trip Relay
Front cover
Mechanism
Closing spring
Charge Handle
Trip spring
11
12
13
14
15
16
17
18
19
20
Draw-in/out device
Arc extinguishing part
Moving contact
Fixed contact
Conductor on source side
Power supply CT
Connecting conductor to circuit breakers
Cradle Finger
Cradle
Conductor on load side
1
2
3
4
5
6
7
8
9
10
Arc chute
Aux. switch control terminal
Control power supply terminal
OCR control terminal
Carrying grip
Closing Coil
Mechanism
UVT coil
Main body
Counter
11
12
13
14
15
16
17
18
Trip coil
Motor Ass’y
Aux. switch
ON button
OFF button
Cover
MTD Base
OCR
3-1

■외관 구조
C. Structure and Operation
1. Internal structure and components
3-2

■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. 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
■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.
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.
C. Structure and Operation
2. Basic function and breaking operation
3-3