Hyundai Electric HG Series User Manual

HGN User Guide
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Safety Practices
This instruction manual applies only to HG-Series air circuit breakers (ACB) regarding
installation and maintenance procedures. Installing and maintaining these products
improperly may result in serious personal injury, property damage, or even death.
Therefore this instruction manual must be read and understood at any step in
unpacking, assembly, operation, and maintenance of the breaker. Only qualified
persons who are familiar with installing and maintaining circuti breakers are
permitted to work on breakers, and this instruction manual should be accessible to
those persons at any time.
Please refer to Detail Instruction Manual by the QR Code.
Transportation Precaution
LNever lift the ACB over an area where there are people.
Never stand under the ACB.
OCR Field Test Precautions
• OCR field tests and setting changes must be performed by qualified personnel.
• After completion of OCR tests, make sure to return the original values.
• Failure to do may cause a fire or burnout.
Operation Precautions
• Never touch live terminal parts.
There is a risk of electric shock.
• Do not leave the ACB in the draw-out position.
Dropping the ACB cause serious injury.
• If the ACB trips open automatically, remove the cause before closing the ACB.
Otherwise, a fire could occur.
• For the ACB with the fixing block, be sure to loosen the block screws before
drawing out the ACB.
Otherwise, damage to the ACB may occur.
Installation Precautions
• Installation work must be performed by qualified personnel.
• Prior to commencing any installation work, open an upstream circuit breaker to
shut off all sources of power.
Otherwise, electric shock may occur.
• Tighten terminal bolt up securely to the specified torque.
Otherwise, a fire may occur.
• Fix the draw-out cradle of the ACB firmly on a flat level surface using mounting
screws. Otherwise, draw-out operation may cause the ACB to fall.
INSTRUCTIONS
• To ensure adequate arc space (insulation distance), avoid blocking the arc gas
vents of the ACB.
Otherwise a burn may result from high temperature arc gas.
• Do not place the ACB in such as an area that is subject to high temperature,
high humidity, dusty air, corrosive gas, vibration and shock, or other unusual
conditions. Mounting in such area could cause a fire, non-tripping, or malfunction.
• Install the ACB to prevent dust, concrete powder, iron powder,a nd rainwater
from entering the unit.
These materials could cause a fire or non-tripping.
• For the ACB with four poles, connect the neutral wire of a 3-phase, 4-wire cable to
the N-phase pole(on the right end).
Otherwise, an overcurrent may cause non-tripping resulting a fire.
Maintenance and Inspection Precautions
• ACB maintenance, inspection and/or parts replacement must be performed by
qualified personnel.
• Prior to commencing any work on the ACB, open an upstream breaker or the like to
isolate all sources of power/voltage from both the primary anda uxiliary circuits.
Otherwise, electric shock may result.
• Prior to commencing ACB internal inspection, make sure that the ACB is open and
the closing spring is released. Otherwise, fingers or tools could be pinched in the
internal mechanism, resulting injury.
• Retighten the terminal screws periodically to the specified torque.
Otherwise, a fire could result.
• Be sure to reinstall the arc chamber if removed.
Failure to do so or incorrect installation of the arc chamber may result in a fire or burn.
• Do not touch ACB live parts (contacts in particular), or structural parts close to a live part
immediately after opening the ACB to stop supplying power.
Otherwise, remaining heat may cause burn or residual charged voltage may cause
electric shock.
• Do not bring your hand or face close to the arc gas vent of th earc chute while the ACB
is closed. Otherwise, a burn may result from high-temperature arc gas blowing out of
the arc gas vent when the ACB trips open.
Installation
1) Ambient temperature : from -5˚C to +40˚C
(24 hours average temperature should not exceed 35˚C).
2) Altitude : Less than 2,000 m
3) In case of special environment application
Table1. Derating table for the altitude over 2,000 m
Altitude
Rated voltage(V)
Rated current(%)
* P and Q frames apply to ( ).
Table2. Clearance requirements
Minimum Space Distance
Insulate Parts
Metal Parts
※ - In case of arc shield application, ignore "A" size.
- In case of mechanical interlock application, it needs extra space over "B" size.
≤2,000m 3,000m 4,000m 5,000m
690 (1,150) 590 (1,035) 520 (920) 460 (805)
100 99 96 94
A B
150 50
150 50
Draw-out Mechanism
In order to test the breaker and exchange parts easily, the breaker body is drawn-in
/out from draw-out cradle, the breaker can be fixed in one among three of draw-out
cradle. The breaker can be moved to TEST or ISOLATED position when the panel
door is closed.
Caution of operation
• Open the breaker before working with the draw-out mechanism.
• Loosen the screws of the fixing blocks before drawing out the breaker body.
• Push the position lock release button, insert draw-in/out handle into
the insertion hole.
• When you try to move the breaker body to the CONNECTED position, the operating
force will increase.
Torque of operating force is about 25 kgf.
• Operate draw-in/out handle totally in inserted state.
• Rotate draw-in/out handle until the handle is locked automatically at each
ISOLATED, TEST, and CONNECTED position.
At each locked position, stop turning the draw-out handle.
Failure to follow this instruction can result in equiptment damage or malfunction.
CAUTION
During the breaker body move from ISOLATED to CONNECTED position, or
from CONNECTED to ISOLATED position, do not rotate the handle by
releasing position locking.
User Guide
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