Vacuum Contactor(Hca )

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Transcript of Vacuum Contactor(Hca )

HCA Series

Vacuum Contactor

Instruction Manual

NoticeRead and understand these instructions before attempting any unpacking, assembly, operation or maintenance of the circuit breaker. This instruction manual should be applied only to HCA Series vacuum contactors. This instruction manual does not include all items regarding installation and maintenance procedures. For more information, please contact HYUNDAI Heavy Industries Co., Ltd. or one of our partners.

HEAVY INDUSTRIES CO.,LTD.

Safety Practices

Safety PracticesThis instruction manual applies only to the HCA Series vacuum contactor 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 contactors. Only qualified persons who are familiar with installing and maintaining contactors are permitted to work on contactors, and this instruction manual should be accessible to those persons at any time. If further information is required, please contact Hyundai Heavy Industries Co., Ltd.

Signal WordsSignal words used in this instruction manual are divided by DANGER, WARNING and CAUTION depending on the situation.

Indicates an imminently hazardous point which, if ignored, will result in death or serious injury. This is the most dangerous point.

Indicates a potentially hazardous point which, if ignored, could result in death or serious injury.

Indicates a potentially hazardous point which, if ignored, may result in minor or moderate injury. This signal also warns operators not to work unsafely.

Safety Practices During InstallationExcessive heavy weight could cause he serious injury, or damage. To avoid this situation, please dont transport a contactor on a lifting facility in the raised position. Do not work on contactors unless the primary circuits are disconnected by the visible breaker. When connecting bus-bars, tighten bolts according to our standards. Contactors should be tightly mounted on a horizontal plane. Do not install the contactors in areas with high temperature, high humidity, dust, corrosive or vibrating conditions. Concrete dust or any other dust should not be inside of the product when it installed. It can cause fire or misoperation.

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Contents

Safety Practices 1. General 1.1 Specification 1.2 Operating Time & Current 1.3 Application Condition 1.4 Ordering System 1.5 Application Considerations 1.6 Fuse Selection 2. Receiving/Handling/Storage and Installation 2.1 Receiving 2.2 Handling 2.3 Storage 2.4 Installation 2.5 Inspection Before Operation 3. Structure and Operation 3.1 Structure 3.2 Explanation of Operation 3.3 Structure of the Vacuum Interrupter 3.4 Structure of Cradle Type and Interlock 3.5 Inserting & Withdrawing 3.6 Control Circuit Diagrams 4. Inspection and Maintenance 4.1 Visual Inspection 4.2 Periodic Inspection 4.3 Checking Vacuum and the Contact Erosion Limit 4.4 Replacements for Main Components 4.5 Troubleshooting

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01

General

1.4 Ordering System

H C A1 2 3 4 5 6 7 8

Digit

Item

Specification

Code

Digit 7 is described according to our catalogue HCA-series Vacuum Contactor

1.5 Application Considerations1) Verify that the voltage and current is within the specified ratings. 2) The vacuum interrupter should be replaced after 1,000,000 operations. If the contactor is not protected by fuses, the vacuum interrupter should be replaced if they have interrupted fault currents at or near their maximum interrupting rating.

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Receiving / Handling / Storage and Installation

HCA Series Vacuum Contactors are subjected to complete factory production tests and inspection before being packed. They are shipped in packages designed to provide maximum protection to the equipment during shipment and storage.Excessive weight can cause serious injury or damage. To avoid this situation, Do NOT transport a contactor on a lifting facility in the raised position.

2.1 ReceivingWhen contactors are delivered, receivers should examine the contents for any signs of damage such as broken, damage, missing or loose components. If damage or loss is detected, notify the nearest HHI office or representatives. Inspection after unpacking 1) Check the type rating and quantities with the specification sheet. 2) Check contactors for any damage or missing materials. 3) Check all the accessories and spares supplied.

2.2 HandlingContactors must be handled with care to avoid damage. Ensure that vacuum contactors do not suffer impact or other injurious physical stress during handling. Damage could cause serious damage to both persons and property.

2.3 StorageIf contactors must be stored for a period prior to use, they should be stored only in dry, dust-free and well ventilated rooms, with contactors in the open condition.

Concrete dust or any other dust should not be inside of the product when it installed. It can cause fire or misoperation.

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Structure and Explanation of Operation

3.1 StructureThe Fig. 3-1 is the section-drawing of the mechanism part in the HCA Series Vacuum Contactor.

3.2 Explanation of Operation1) Closing When the Closing Coil the Moving Core is energized, . , which is fixed , moves toward the Closing Coil

and compresses the Opening Spring At the same time, the Pressing Plate on the Main Shaft

, pushes the Pressing Spring

so the Movable Stem of the Vacuum Interrupter is moved up to make the CLOSED condition. For latched type (mechanical latching), the latch device holds the Moving core of the contactor closed against the closing coil after the contactor is energized (closed) and the control source is removed.

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03

Structure and Explanation of Operation

3.4 Structure of Cradle Type and Interlock1) Structure of cradle type The Fig. 3-3 is the cradle type of HCA Series Vacuum Contactor.

ON/OFF Indicator Counter ( Trip Button ( Control Plug ( Position Interlock (

Manual Closing Hole ( Fuse ( Fuse Melting Indicator ( Position Switch ( Fuse Barrier (

ON/OFF Indicator ON means Closed condition, OFF means Open condition. Counter The Counter shows how many times the contactor has operated since it was made. The Counter may read 100 when you receive the contactor, because it was tested in our factory or in other place after manufacturing. Trip Button Only the latched types have the Trip Button which is used in emergencies. Control Plug The control source is supplied through the Control Jack. Position Interlock The Position Interlock makes the contactor operate only in the test and service position and prevents the contactor from closing mechanically between TEST and CONNECTION position. Manual Closing Hole Only latched types have a Manual Closing Hole which is used to close the contactor manually.

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Structure and Explanation of Operation

3.5 Inserting & Withdrawing1) How to insert the contactor in the E, F2 cradle. InsertingSet the wheels of the contactor exactly on the guide rail of the cradle. At this time, more than two person have to lift up the breaker for full safety. If the contactor is pushed to the TEST position, the Interlock Pin prevents the draw-in at this position. Hold up the Interlock Lever (Fig. 3-4) and push the Contactor to the CONNECTION position. If the contactor is in the correct position, put the Interlock pin puts into the hole on the guide plate and the Female Contact will be inserted fully into the terminal.

Interlock Plate

Interlock Lever

Do not insert and withdraw the contactor in the closed condition. Hold up the Interlock Lever during the inserting and withdrawing.

Withdrawing When a contactor is withdrawn, the contactor cannot be operated because of the interlock. In OPEN condition, hold up the Interlock Lever (Fig. 3-4) and pull out a contactor to the TEST position.

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Structure and Explanation of Operation

3.6 Control Circuit DiagramsFOR FIXED TYPE

CONTROL PLUG FOR DRAWOUT TYPE FOR FIXED TYPE

CONTROL PLUG FOR DRAWOUT TYPE

CONTROL PLUG

CONTROL PLUG

CONTROL PLUG PT 1SET PT 2SETS TEST CONNECTION POSITION SWITCH FUSE MELTING INDICATOR

VZ: Closing Switch R: Resistor

CC: Closing Coil Z: TNR

X: Relay TC: Trip Coil

CTD: Condensor Trip Device Aux. SW: Auxiliary Switch

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Inspection and Maintenance

4.2 Periodic Inspection

Object

Items

Standard interval

Check procedure Clean and dry when the dust or humidity is extreme If a component is badly damaged, replace it. Check if the strike pin of fuse is out If it is blown, each fuse for 3 phases should be replaced at the same time. Check if the fuse melting indicator operates smoothly. If not, put the grease on the moving parts. Check and tighten bolts. Check if the contact erosion is expired. If it is expired, each VI of 3 phases should be replaced at the same time.

Insulation 3 years Main body Overall 6 years

Fuse

Fuse

Fuse Melting 3 years Indicator 3 years Contact wear

Vacuum interrupter

Pressure 3 years Tightness 1 years Open and close mechanism Spring Closing Coil 3 years Check and tighten bolts. Check for scratches or rust. If the coil discolored, replace it. Check and tighten bolts. One should be operated at 85 1