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KYN28-12 Series

H.V Metal Clad Switchgear

Installation and Maintenance Manual

10/09/2015


Always Safety First In the Switch Equipment Installation Please Read

This Manual Carefully Before Use

Switch equipment can only be installed in indoor places suitable

for the operation of electric equipment. Ensure the professional

electrical personnel for installation, operation and maintenance.

Must ensure that the site electrical equipment of the join

condition and the application of the working procedures and

safety. All about switch equipment operation, the relevant

regulations to comply with the specifications.

DANGEROUS

Pay special attention to the instructions marked the danger

signs.

Don't beyond switching equipment under normal working

conditions prescribed by the technical parameters of the load.

Instruction should be placed on all related to the installation,

operation and maintenance personnel can easily get a place.

Users full-time personnel responsible for all matters that affect

job security, and properly manage the switch devices.

If this instruction is question, SZET Co.,LTD will be glad to

provide further information.


1. General 1.1 Overview

KYN28-12 Series H.V Metal Clad Switchgear is applicable to

three-phase ac 50 (60)Hz, 3.6 ~ 12 KV single busbar and busbar

sectionalizing power system, with functions of "five prevention".

Switchgear can be configured to remove part of the vacuum circuit

breaker and components such as vacuum contactor.

1.2 Standards and Specifications

KYN28-12 Series H.V Metal Clad Switchgear meet IEC298,

GB3906, DL404 standard, etc.

Switchgear enclosure protection grade is IP4X, when the circuit

breaker room door open, remove handcart, protection grade is

IP2X.

During the installation and operation of the system, to abide by

all the relevant IEC standards and relevant national or local

safety guideline, SZET co., LTD., should also be considered to

provide relevant information.

1.3 Service Conditions

1.3.1 Normal Working Conditions

KYN28-12 Series H.V Metal Clad Switchgea normal working

conditions are as follows:


Indoor Environment Temperature:

The highest temperature + 40 ° C

Daily average no greater than + 35 ° C

The lowest temperature - 15 ° C

Indoor Environment Humidity:

Daily average relative humidity 95% and below

Monthly average relative humidity 90% and below

Installation site altitude 1000 m and below

Seismic intensity is not more than 8 degrees

No fire and explosion danger, no serious polluted and chemical

corrosion.

1.3.2 Special Working Conditions

The special working conditions, must consult Manufacturers.

Manufacturers and users should be agreed on special working

conditions.

Have to consider the installation place higher than 1000 m

above sea level, reduce the strength of air medium effect on the

insulation level.

If the ambient temperature exceeds the limit, on the design of

bus and branch busbar compensate or limit carrying capacity.

Install ventilation inside ark of Switchgear will be conducive to


heat dissipation.

1.3.3 Precautions

If the switchgear operation areas of high humidity, temperature

fluctuations is bigger, faster and amplitude switchgear running in

such a climate environment, there is the risk of condensation, thus

switchgear in standby and operating conditions, users should

guarantee the heater into 24 hours a day! But in the large current

operation, can not input.

2. Technical Data 2.1 Switchgear Electrical Parameters

Nominal Voltage KV 12

Rating Insulation

Level

1min Power Frequency Withstand Voltage(RMS) KV 42

Lightning Shock Compression (Peak Value) KV 75

Rated Frequency Hz 50(60)

Main Busbar Rated Current A 630,1250,1600，2000，2500，

3150，4000

Branch Busbar Crrent Rating A 630，1250，1600，2000，2500，

3150，4000*

Thermal Stability of 4 Seconds Current (RMS) KA 16，20，25，31.5，40**

Rated Dynamic Stable Current (peak value)*** KA 40，50，63，80，100

* Need to be equipped with ventilation * * 40 KA for 3 seconds * * * Transformer short-circuit capacity should be considered separately

2.2 Performance Bearing Inside Fault Arc

KYN28-12 switchgear in design has switchgear of internal arc


fault into consideration, according to GB3906 and IEC298 has

carried on the strict test, can effectively ensure the safety of

equipment and operating personnel.

2.3 Overall Dimensions and Weight

Overall Dimensions

Height a （mm） 2200

Width b （mm）

Branch Bus Rated Current is 1250 A and Below,

Short Circuit Breaking Current of 31.5 KA and Below. 800/650*

Branch Bus Rated Current is 1600 A and Below,

Short Circuit Breaking Current of 40 KA 800

Branch Bus Rated Current is 1600 A and Above 1000

Depth c （mm） 1350/1500 800 ~ 1200 kg Weight, Detailed data are shown in Table 1. * With VD4 circuit breaker is available.

Table 1 Installation Requirements of Size and Weight of Cabinet


Incase Equipment Movable Type Movable Type Movable Type

Depth c mm 1500 1500 1500

Width b mm 650 650 1000

Distance From the Wall mm 800 800 1200

Corridor Width * mm 1000 1100 1200

Install Channels (Indoor)

Width mm 1000 1000 1200

Length (Deep) mm 1500 1500 1500

Frame Requirements

Width mm 800 1000 1200

Height mm 2200 2200 2200

Weight (Approximation) kg 800 850 1200

Floor Bearing kg/m2 1000 1000 1000

* Depend on the most width of the switchgear.

3 Switchgear Structure 3.1 Basic Structure (FIG. 3/1)

Switchgear is composed of cabinet body and vacuum circuit

breaker handcart, this is its basic structure. switchgear and

installation of electrical components as shown in (FIG. 3/1).

Into line ark or outlet ark is basic ark scheme, and have derived

schemes, such as bus section ark or measuring tank, etc.

In addition, there are configuration stationary load switch,

vacuum contactor handcart, isolate the handcart, etc.

Install the Switchgear relying on a wall or face to face structural

details and installation equipment, contained in the order file.


3.2 Shell and Plate

Switchgear of the shell and the clapboard is made from high

quality steel plate, has a strong resistance to oxidation and

corrosion function, and the stiffness and mechanical strength is

higher than normal low carbon steel.

The top of the three high pressure chamber is equipped with a

pressure relief plate. Appear when the internal fault, high

pressure indoor air pressure increases, because the cupboard

door has reliable seal, high pressure gas released made

pressure relief plate.

Adjacent switchgear separated by their sides, still have air

buffer layer after spell ark, can prevent the switchgear is arc

fault through melting. Low pressure chamber D assembly into

separate compartment, separated with high pressure area.

Partition to separate circuit breaker room B and C cable room,

even if the circuit breaker handcart removed (the valve will

automatically shut down) and can also prevent the operator

reach the bus room A and cable room C charged part.

Remove the bolt can remove the horizontal clapboard, facilitate

the installation of cable seal terminal.


3.3 Small Room Inside Switchgear

3.3.1 Circuit Breaker Room (FIG. 3/1, 3/3, 3, 5, 3/6)

Circuit breaker handcart contained in the guide rail of the circuit

breaker room B, can be in the operation and test/isolation

between the two different position.

When the handcart from the run to test/isolation location moves,

valve cover automatically static contact, reverse operation is

open.

Handcart are able to operate under the condition of the switch

cupboard door close, through the observation window ON the

door can see the location of the handcart, hand car ON (circuit

breaker closing)/OFF (breaker break-brake) button, close

break-brake status indicator and energy storage/release status

indicator.

3.3.2 Handcart

Handcart can use manually move.

Framework by alloy plates assembled together, the above

circuit breakers and other equipment. A spring contact system

arm on the circuit breaker of a column, when the handcart is

inserted into the running position for electrical connection.

Handcart between switchgear, protection and control line signal,


use one line plug connection.

Handcart just inserted switchgear/isolation position is fixed to

the experiment, at the same time also reliably connected to the

switchgear earthing system.

The position of the handcart, through the observation window or

in a low pressure chamber on the front panel handcart electrical

position indicator.

In addition to the vacuum circuit breaker, handcart can match

the vacuum contactor, isolation devices and measuring

equipment, etc

3.3.3 Busbar Room

Bus bar from one switchgear to another switchgear, through the

branch busbar and casing is fixed.

The branch of rectangle busbar with bolt connection directly to

main busbar, without any connection.

All bus and branch busbar with heat shrinkable casing cover.

Plate and the casing pipe between switchgear and switchgear

bus isolation, and be supportive.

For electric stress of switchgear, general need this support.

3.3.4 Cable Room (FIG. 3/1)


Current transformer and earthing switch installed in the cable

room at the back. Cable room also can install lightning arrester.

L when the cable room door opened, there is enough space for

construction personnel into the rack installation cable (up 6).

Cover at the entrance of cable can use the permeability of the

base of stainless steel plate, is slotted, removable, facilitate the

site construction. Bottom plate through the primary and

secondary cable diameter changes in sealing ring opening

should be adapted to the cable, in case of small animals to

enter.

For larger humidity in cable trench, suggest using fire clay,

epoxy resin will be sealed switchgear.

3.3.5 Low Pressure Room (FIG. 3/1, 3/2)

Switchgear secondary components installed on the low

pressure room and door. Control lines trough the space, and a

cover plate, the left side of the trough to introduce and draw out

attachment between ark, the right side of the trough for laying

switchgear inside the attachment.

Low pressure room on the side panel has a line through the

hole, in order to control the power connection.

3.4 To Prevent Wrong Operation of Interlocking/Protection


With a series of interlocking device, fundamentally to prevent a

dangerous situation and may cause serious consequences of

wrong operation, thus effectively protect the operator and

switchgear.

Interlock function is as follows:

Circuit breaker and earth switch in break-brake position,

handcart can move from the test/isolation position to the run

position.

In this state of break-brake, reverse move also ok (Machine

Interlock).

Handcart has completely in the test or run position, circuit

breaker can switch (Mechanical and Electric Interlock).

Handcart in test or run the position without the control

voltage, Circuit breaker can't switch, can only manual

break-brake (Electric Interlock).

Handcart in the run position, The line of control plug is

locked, can't pull out.

Handcart in test/isolated location or removed, Grounding

switch to switch (Machine Interlock).

Grounding switch off, Handcart can't from the test/isolation

position, move to the run position (Machine Interlock).


In the handcart or grounding switch operating mechanism

are installed on the additional interlock，Such as locking

electromagnet，When ordering to SZET Co., LDT, request.

Figure 3/1:

KYN28-12 Into Line or Outlet Switchgear

Basic Structure Cutaway View

Separation Room

A Busbar Room B Circuit Breaker Room

C Cable Room D Low Pressure Room

Main Part

1 Bus 2 Insulator

3 The Static Contact 4 Contact Box

5 Current Transformer 6 Grounding Switch

7 Cable Termination 8 Surge Arrester

9 Zero Sequence Current Transformer 10 Circuit Breaker Handcart

10.1 Slide the Handle 10.2 To the sliding handle lock key (al)

11 Control & Protection Unit 12 Wear Casing Wall


Main Accessories

13 Screw the Operation of the Hole 14 Cable Clamp

15.1 Cable Seal Ring 15.2 Connection Plate

16 Grounding Copper Platoon 17 The Second Plug

17.1 Locking Lever 18 Pressure Relief Plate

19 Lifting Ear 20 Transport the Car

20.1 Lock Lever 20.2 Adjust the Wheel

20.3 Guide Bar

Figure

3/3 Circuit Breaker Room Door Open,

Handcart in Test Position Figure

3/4 Circuit Breaker Handcart in the

Position to Run Into

21 Movable Door 10.3 Contact Torx Head

4 Contact Box 10.4 Contact Arm

10 Circuit Breaker Handcart


Figure 3/5

Circuit breaker handcart Figure 3/6

After Handcart Removed, Move the Door is

Open Circuit Breaker Interior View

17 The Control Line Socket 3 The Static Contact

4 Contact Box 21 Valve

4 Transportation and Storage 4.1 Terms of Delivery

In addition to order check, good switchgear assembly, should

also comply with the corresponding IEC298, GB3906 relevant

provisions of the factory test, the correctness of the structure and

function of the correction. Bus, fasteners, accessories are separate

packing.

4.2 Packaging

The packing of the switchgear, corresponding adjustments

according to the requirement of the specific situation, such as

sailing packing or not. Maritime transport, in particular, even if it is

shipped in container, also used plastic film bag to switchgear

encapsulated, desiccant is put in the right in case of be affected

with damp be affected with damp.

4.3 Transport

Normally consist of a single switchgear transport unit,

exceptional cases, can be composed of switchgear group or


installed back-to-back switchgear transport unit.Each

switchgear contains four lug.

Switchgear should be vertical transportation, measures

must be taken to protect the safety of personnel and equipment,

with one of the following tools to be able to do the work for

loading:

Cranes, forklift or artificial hanger.

Crane load

Rope should have enough carrying capacity, hook open

width should be≥ 30 mm

Coupling hook the rope and the Angle between the

horizontal line should stay above 60 °.

Lifting switchgear, allows for a corresponding bending lug.

4.4 Delivery and Storage Process

Switchgear arrived at the scene, the consignee has the

responsibility to (but not limited to) do the following work:

Inform my company site service engineers to join the

unpacking acceptance work.

Complete and check the arrival of the goods is damaged or

not. Switchgear certificate is correct and complete, and the

presence of the instructions. If there is any doubt, then open


the check. If you need storage, Excessive care also add

desiccant and seal again.

Detailed records of any shortage, defects and damage in

transport, and inform the relevant authorities.

Please note that the storage process, should be placed in to

the switchgear and install material without any damage.

4.4.1 Open the Packing Cases

First of all, the roof broke open the packing cases, and then

open the side panel, around the finally removing the

switchgear and chassis coupling bolt.

Please note that the removed each socket head bolts,

should answer in a switchgear of his place, and should twist

tight.

Using four lifting lugs on the top of the cupboard, switchgear

vertical lift make it out of the chassis.

Then remove the chassis to, in the bottom of the tank into

the roll bar, reuse stick slowly move, to Then move chassis,

into the roll bar in the bottom of Switchgear, reuse stick

slowly move, moving Switchgear to install or temporary

location.

Pay attention to in the process of moving, cannot have the


heavier impact and vibration.

4.4.2 Simple Packaging &No Packing of the Switchgear

Storage room should be dry, well ventilated.

Indoor temperature is not lower than -25 ° C

No other harmful environmental impact.

Switchgear should be upright to deposit.

Switchgear can't pile up.

Cannot remove or damage to the packaging.

Unpacked switchgear, cover loosely with plastic film to avoid

staining. Must maintain the air circulation to prevent

corrosion.

Lon inspections regularly on time, until the installation work

to begin.

4.4.3 Seaworthy Packing and Internals Has

Protective Film of the Switchgear

Transport unit stored in a dry, moistureproof prevent the

damage.

Check whether there is any damage on the packaging.

From the date of packaging, over storage period, the

protective function of packaging may be lost, if still need to

hold, should take appropriate measures.


5. On-Site Installation Installed to ensure that the correct procedures and the highest

quality, on-site installation of switchgear shall be made by the

special training of professional personnel to carry out.

Also can inform me of the company sent engineers to the scene

to be responsible for guiding and monitoring

5.1 General Requirements of Installation Site

Distribution room should be dry, clean, the air circulation, the

door can be locked, as well as to make the wall hole and in

cable trench, the necessary preparations.

Cable conduit should be according to the specific requirements

of the cable around the work area.

Schematic diagram of 5/5 for your reference.

Distribution room ceiling height should not be less than 3000

mm, must make the pledge that we shall meet the indoor

switchgear working conditions prescribed by the IEC, including

indoor temperature condition.

5.2 Distribution Room Layout Basic Solution

KYN28-12 switchgear have "Double Sided Maintenance" and "

Single Sided Maintenance" in two ways.

KYN28-12 switchgear can be installed against the wall, to save


area, but if the conditions permit, still suggest design distribution

room layout, according to the Double sided maintenance

consider, make the back of the switchgear cover plate to the

wall, as well as between the switchgear to the walls on both

sides, all set aside the appropriate channel installation and

maintenance.

Switchgear from wall to have enough wide channels, the

installation operation and maintenance are convenient. If the

Switchgear is face to face with the double row layout, distance

between two rows of switchgear suggest not less than 2500

mm.

5.3 Basis

Install switchgear in the distribution room on the floor of the

underlying framework or elevated auxiliary level ground, is more

appropriate.

When laying basis, shall comply with the prescribed standards,

especially the straight line and plane degrees of tolerance, this

is the perfect switchgear installation prerequisites.

Switchgear Basis construction should comply with the electric

power construction and acceptance of the provisions of the

relevant provisions in the technical specification.


5.3.1 Distribution Room Floor As the Basis

Switchgear quantity is little, weight is lighter, can be directly

installed in the transformer room floor.

Smooth is required to install the floor, and have enough carrying

capacity.

If you need, when to install, can be inserted under the

switchgear suitable gasket.

5.3.2 Based On the Concrete Floor Frame (FIG. 5/5)

Installation

As shown in figure 5/5, switchgear based framework of

embedding, general requirements of the secondary water

measures, completion of civil construction, embedded on

the basis of frame.

Proposal shall be borne by the electric installation unit basis

framework of production and buried. The basis of the

specific engineering framework, should according to the

design department, drawing drawings processing according

to the requirement of the manufacturer.

Civil engineering construction, the switchgear foundation

level, should consider to reserve the height of the basic

framework of channel, and a slight margin, as shown in


figure 5/6.Along the frame width, interval of 1 m to 1.5 m

pre-embedded anchoring steel plate.

Based framework is made up of channel steel and welded

frame structure, the framework of the basic requirements as

shown in figure 5/6 size, to the height of the channel steel,

no requirement, can choose # 5 or # 8 channel steel.

Basic framework of the longitudinal channel steel extension

of distance, should be consistent with the size of the

switchgear ontology framework.

After the completion of the construction foundation

engineering, by electric installation unit, will be processed

based framework on the base plane, on the basis of frame

installation.

Use adjustment. Using steel tape measure and level

calibration frame the size of the horizontal and vertical

direction, request level error is less than 1 mm per metre,

total error is not more than 3 mm.

And ask the basic framework of top surface, should be

higher than the transformer room floor elevation of about 3-5

mm. Don't allow framework level is lower than the floor

height.


After calibration framework along with adjusting pad iron

welded together on embedded anchor plate. Finally

completed secondary grouting foundation framework of

embedding.

As shown in figure 5/5 and 5/6.In the installation phase,

basic framework should not be hit or pressure. Basic

framework of anchor and secondary water before should

perform the necessary acceptance procedures.

5.4 On-Site Installation(FIG. 5/1—5/6)

Use the strength grade of not less than 8.8 standard bolts, the

corresponding tightening torque is as follows:

Bolt （d） 6 8 10 12

Tightening Torque （Nm） 10 25 50 85

Note: Do not add any lubricating oil

The switchgear arrangement given the order, switchgear to

installation location.

Foot screws. Switchgear after all together, land or welding way

should be fixed on the basic framework, while the number of

switchgear more than 10 sets, should consider to start the

installation from the center position.

The center of the first two switchgear in place, remove the

switchgear to the base frame, calibration of horizontal and


vertical dimensions related to, and then two switchgear pieced

together. Stitching procedure is as follows:

To shake out the position of the circuit breaker

handcart from "work" to "test/isolation" position, open

the circuit breaker room door, take off the circuit

breaker handcart line plug, and then push the repair

the car to the front of the ark, to adjust its work

platform height, right on the positioning pin hole, insert

cabinet body and lock will repair the car.

Hands hold circuit breaker handcart handle, took a

pull (charge a positioning pin, outwards on the circuit

breaker handcart to repair the car at the same time.

In place, loosen the hand, make the circuit breaker

handcart lock on repairing the car.

Hand repair the car in front of the lock handle, pull (to

the left, to repair the car locked away from the cabinet

put oneself in another's position. When the circuit

breaker handcart can easily be moved to the safety

safekeeping.

Moves, hand the car should not be pushed directly on

the circuit breaker, and should be directly promote


repair the car. When driving car maintenance, should

be slow to act, and watch are blocked or uneven

ground level ground, fight the breaker vibration or

tilting.

Open the switchgear cable room door plank.Cable

room door open, such as blocking exists, according to

6.2.5 operation.Then remove lid pull at the back of the

switchgear

First break out the back, the top cover plate used for

pressure relief plate three nylon bolt, and then

unloaded back shroud sides, a total of 14 fixed bolt,

then back shroud can be unloaded and removed.

Switchgear before joining together, should remove the

top of the switchgear four lug and fixed screw,

assembled cabinet put oneself in another's position

before, you should also check the busbar room

clapboard or layering and the partition of ascension

ark, whether has been installed correctly.

Assemble cabinet put oneself in another's work, is to

turn around two switchgear dedicated 10 *M10 * 35

socket head bolts tighten. Switchgear of upper and


lower right side of the plate after 10 special pull rivet

nut, all ready before they go out.

Installation, only the switchgear alignment, from the

left side of the switchgear is special bolt, screw in

adjacent cabinet put oneself in another's position of

the corresponding pull rivet nut, will first 10 bolts are in

place, with the hand screw in, and then using a

wrench, tighten them one by one operation is very

simple.

Repeat the above process, the entire row of

switchgear running spliced together. Finally will back

cover board and control cable trough cover plate is

installed in situ.

5.5 The Installation of Busbar Connection

With the barrier switchgear, busbar installation casing. with

clean, dry soft cloth to wipe the busbar, check whether there is

insulation damage. As mentioned in section 7.2, remove grease

and dirt adhesion.

Bus before the installation, should check bus bar installation

required in all kinds of accessories. Includes rectangle busbar,


M10 hex socket screw, disc spring washer, nut, end support

frame and insulation cover, etc.

Note: the different width of the switchgear adjacent splicing, the

length of the third phase bus is not equal, in the bus were

counted, should pay special attention to!

Mistress line before the installation, should remove switchgear

at the top of the pressure relief plate, the release of plate and

screws should be properly kept.

Branch busbar connection with main bus-bar, adopt four level is

not lower than 8.8 M10 Allen, high strength bolt connection bolt

disc spring gasket must be put on both ends.

Note that the disc spring pad bell mouth, must be toward the

conductive body.

Main busbar installation, generally begins from the center of the

switchgear cabinet, the connection on both sides

First in order of the minimum phase bus bar, was fitted by root,

bolts, washers and nuts are installed, tighten by hand.

After waiting for the phase bus bar is installed in place, then use

sleeve wrench and torque wrench, in order to each bolt

tightening, mistress line bolt tightening torque of 50 N/m.


suggest each bolt use torque wrench to check after, should be

well marked, to avoid omissions.

In the bus terminal, bolted support plate (supporting insulation

cover).

5.6 Power Cables and Control Cables Connection

The connection of the cable must be conducted in accordance

with the requirements of construction of cable around the work area.

The following procedure for your reference:

Introduction of power cable, crack at a predetermined length.

According to manufacturer's instructions to install the cable

terminal.

According to the cable core diameter, opening on the damping

ring size of the hole.

Cable through the base plate and the damping ring connected

to terminals, set into the heat shrinkable casing, received a

cable connection point.

Heating heat shrinkable casing, make its contraction, cover the

exposed part of the cable core.

Floor installation, cover tightly damping ring, with cable clamp

clamping cables.

Control cable into the left side of the line of the tank (5/2)


Stripping cable, the cable fixed in the top slot.

Rotate the terminal row frame up, introduce the control cable

core in the low pressure room D.

According to the wiring diagram, the line of the terminal line of

the corresponding terminal.

With casing through hole (figure 5/3) line to the adjacent

switchgear.

5.7 Grounding Copper Platoon of Connection

The adjacent switchgear grounding copper platoon to connect

each other, form a unified lady grounding busbar line.

Switchgear factory have used to interconnect the short

connection copper platoon, temporary fixed on the right side of

the main grounding copper platoon.

When installation will interconnect copper platoon, through

reserved slotted between switchgear, fixed on the main

grounding copper platoon of two adjacent switchgear.

5.8 Installation Work Finish

Check switchgear paint damage, repair (see section 7.3.1).

Check bolt coupling, especially in the field installation of busbar

and grounding system of bolt, all must tighten.

Carefully clean switchgear.


Back to dismantle cover plate during installation and wiring.

Figure 5/1 Figure 5/2 After a board and terminal board at

the end of the switchgear Switchgear Side Rear View

19 Lug 31 End Seal Plate 26 Loading line of casing in hole 27 The Embedded Nut for Switchgear Spell Ark 28 Grounding Switch Operation Handle 22.1 Grounding Switch Board 29 Hole for Switchgear Spell Ark 16.1 The Main Grounding Bus Bar Hole Derivation

Figure 5/3 Figure 5/4

Switchgear front see High voltage view (horizontal clapboard had drawn)

Low voltage compartment door Control and instrumentation

OPER.IND.

30

分合闸开关分合闸开关储能开关仪表室照明开关分闸灯合闸灯储能灯

PROGRAM

STEP

RESETUaux

TRIP

SQR

SQB

SQF

SPAJ140C

SPAJ140C

5A1A

1A 5A

80...256V=

18...80V_

REGISTERS

50

60

RS611 Ser.No


23 The Control Cable Trough Cover 25 Removable Type Horizontal Clapboard 21 Guide 30 Charged Display(DXN-T)

Figure 5/5 Figure 5/6

Section of Distribution Room Arrangement

Width is 1000, 800, 650 mm Three Switchgear Based Framework

6. The Operation Of the Switchgear Only by trained professionals to carry out related work and

operating procedures.Their knowledge of switchgear, attaches

great importance to the IEC standard requirements, and other

specialized agencies and local regulations about safety

procedures, working procedures and instructions.

6.1 Starting

6.1.1 Preparation

Before on high voltage power supply, should complete the

following work:

Should be carefully checked switchgear nameplate is the


technical data and operation required by the electric power line

technical data are consistent;

Check components such as circuit breaker, can remove the unit,

insulation parts, etc.;

Check the main grounding bus bar and ark of substation

grounding conductor connection is reliable.

Check whether the surface of paint damage, if any, is according

to repair the guidance of section 7.3.

Remove all remaining materials inside ark, irrelevant objects

and tools.

With clean, dry and soft cloth to wipe out waste inside of door of

cupboard of park of cabinet put oneself in another's position and

insulation and sealing strip, etc. According to section 7.2, wiped

the dust adhesion and grease.

Reinstall removed during installation, wiring and test plate.

Check circuit breaker pole column cover (for large current circuit

breaker is not installed) installation is correct.

Transport cap on removing the circuit breaker pole column

(when with this indication).

If need be, according to IEC 298 or GB3906 circuit power

frequency withstand voltage test. Trials should pay special


attention to the voltage transformer and cable, etc.

Confirm the door has been locked.

Auxiliary control power supply is connected.

Use manual or electric control mode, the operation of the switch

unit tests are carried out.

Without hard cases, check the validity of the mechanical and

electrical interlocking.

Protection device for setting of switchgears, test its function with

test equipment.

Training local operators, make them understand the basic

details of the switchgear for normal operation.

Check for operation condition and the switch state of the

electrical system in the device.

According to the regulation of responsibility, it may be

necessary to check the switchgear of the adjacent area of the

following equipment: power cable, auxiliary cable, auxiliary

power supply, remote control system, grounding system,

substation equipment, the status of the distribution room.

6.1.2 Switch On

According to the provisions of the conditions of use into heater

48 hours in advance.


Comply with all relevant safety regulations.To access the

circuit breaker and load switch in the off position.

Demolition of dangerous work area of the grounding line and

short wires.

Feed cable electricity.

According to normal procedure to switchgear feeder,

observation signals and indicator.

Several road into a line and a few switchgear group, should

check phase-sequence (see 6.3.2 section).

Depended on high voltage power supply that provides all of the

measurement and check all functions.

Note any abnormal situation.

6.2 The Operation Of the Switchgear (FIG. 6/1)

All operations in the switchgear door is closed.

6.2.1 Circuit Breaker Handcart

Manually insert the handcart from the test/isolation position to the

run position.

Insert the Plug Of the Line Of Control Line Socket

Confirm the circuit breaker in the break-brake position (if not

brake brake).

Will handle is inserted into a socket screw mechanism.


Turn the crank clockwise until the transfer is not moving so far

(about 20 turns).

When the Handcart In the Run Position

Observation position indicator.

Pull handle, should not turn the meantime, in order to avoid

offshoring handcart position, switch does not reach the

designated position, and affect the instructions and control.

Note

Handcart are not allowed to stay in the operating position and

test/isolation position between any intermediate position.

Manual handcart from running location will be moved to the

test/isolated position.

According to the operating location into operation, operation in

reverse chronological order.

Observation position indicator.

Handcart from the test/isolation position will be moved to the car

maintenance.

Open circuit breaker room door.

Pull up line plug, the lock in the location (just) in the car.

Will repair the car pushed to the switchgear positive, through

the car height adjuster to adjust the height of the workbench, let


its locating pin on the ark before the positioning hole, and then

the car forward, smooth positioning pin inserted into the

positioning hole, repair the car with the switchgear lock with the

lock key.

Pressure to the inside of the sliding handle, lift the handcart and

interlock switchgear, pull handcart to repair the car. Loosen the

sliding handle, the handcart lock on the workbench.

Lock key release lever operation, and to repair the car away

from the switchgear.

Handcart from maintenance within the car up to the switchgear

(test/isolation position).

The handcart from the test/isolation position will be moved to

the car sequence of operation, maintenance operations in

reverse chronological order.

6.2.2 Circuit Breaker (FIG. 6/1)

See detailed instructions for circuit breaker operating

instructions.

Spring Energy Storage

About circuit breaker with energy-storage motor, energy storage

automatically. If energy-storage motor damage, should hand

machine.


Mechanism of circuit breaker is equipped with a hand machine,

insert the energy-storage lever pin, up and down repeatedly,

until the show has been able to energy storage conditions

(about 25).

To achieve energy storage conditions, the energy storage

mechanism automatically tripping, energy storage of leverage

further movement is invalid.

The Circuit Breaker Brake & Close

In situ or in remote control button operation, observe switch

points switching state indicator, breaker operation each cycle,

operation frequency counter is automatically +1.

Operating procedures and the corresponding relation of energy

storage conditions are shown in Table 2 and Table 3.

Energy Storage Status Indicator By Illustrations

No Energy Storage Has Energy Storage

6.2.3 Grounding Switch (FIG. 6/1)

Grounding switch has a quick closing mechanism.

Only when the handcart in the test/isolation position, grounding


switch to operate.

After release from Switchgear door closed, and the blocking

state is allowed to close the earthing switch.

Manual Brake & Close

Will slide to the earthing switch operating at the bottom of the

hole.(if the earthing switch in the closing position, it is in this

position)

Inserted into the earthing switch lever.

Turn the crank clockwise, close the grounding switch.

Counterclockwise crank disconnect earthing switch. When the

turning Angle is about 180 °, action should be consistent.

Observe the mechanical/electrical grounding switch position

indicator.

To remove the crank, grounding switch off, right skateboard in

the open position.

6.2.4 Cable Room Door

If cable room door is equipped with mechanical or electrical

force lock, only when the earthing switch close, cable room door

are allowed to be opened, and only after the door closed cable

room, grounding switch are allowed to be brake.

Steps are As Follows:


1. Remove the circuit breaker handcart to test position or move

out.

2. Operate grounding switch to closing position.

3. Loosen the cable with a special key room door lock, open the

cable room door.

4. After completion of maintenance, closed cable room door.

5. Operate grounding switch to break-brake position.

6. Will push breaker handcart to test or work location.

6.2.5 Electrical/Mechanical Instructions/Monitor (FIG. 6/1)

Operation of the switchgear, should observe the second area of

all the operation data and status indication, alert to any abnormal

situation.

Figure 6/1 Circuit Breaker Manual Operating Mechanism

10.1 Smooth Handle 10.10 Organization's Operations

22

10.6

13.110.1

10.5

10.8

10.7

10.12

10.11

10.10

10.9


10.5 The Line of Control Socket 10.11 The Switch Of Mechanical Position Indicator 10.6 Line Of the Plug 10.12 Energy Storage Lever (Manual Institutions Need Only)

10.7 Mechanical ON Button 13.1 Handle Pin Screw Institutions 10.8 Energy Storage Status Indicator 22 Grounding Switch Operating Mechanism 10.9 Mechanical OFF Button

7. Maintain 7.1 Overview

Maintenance work keep switchgear trouble-free operation, and

achieve as far as possible, long service life.Closely related to do

the following work.

Check--Actual operation situation of confirmation

Maintenance--Prescribed performance measures

Repair--Restore regulation measures of running status

Note

Maintenance work can only be carried out by trained

professionals.

Their knowledge of switchgear, attaches great importance

to the IEC and other technical institutions stipulated by the

relevant safety rules and other important guidelines.

When switchgears need repair, it is better to make SZET

Co., LDT service personnel to assist processing.

Certain equipment/components (such as wear parts) of

inspection and maintenance intervals (maintenance cycle)


depend on the length of run time, the operating frequency

and the number of open circuit fault, etc.

Some other parts maintenance cycle depends on the

specific situation of works, load level and environmental

impact (including pollution and corrosive air).

In the specific situation, must comply with this manual and

the configuration of circuit breaker and load switch

operational guidelines.

If need be, can gain more information from switchgear

technical data (e.g., special working conditions).

7.2 Inspection and Maintenance

According to the operating conditions and the site environment,

every 2 -- 5 years should make an inspection and maintenance

for the switchgear.

Inspection shall include (but not limited to) the following

contents:

According to the safety rules set by the IEC and other

institutions, isolation must carry on the work area, and

ensure the power supply will not be connected again.

Check switch device, control, interlocking, protection, the

function of the signal and other devices.


Inspection quarantine contact surface condition, remove

from the handcart, valve, visual inspection contact. If the

silver coating on the surface of the wear and tear to

copper, severe corrosion, damage or overheating or

surface (surface discoloration), the change of contact.

Check switch accessories and auxiliary equipment, also

want to check the insulation protection board, they should

keep dry and clean.

Under the operating voltage, the equipment surface are

not allowed to appear external discharge phenomenon.

This can be according to the phenomenon such as noise,

odors, and glow.

Basic maintenance and inspection is necessary to do work,

mainly includes the following contents:

Found dirty (if in a tropical climate, salt, mold, insects, lon)

can cause pollution, carefully wipe the equipment, especially

the insulation material surface.

With dry soft cloth to wipe the little adhesion of dust.

With a soft cloth dipped slightly alkaline household cleaners,

wipe the sticky/greasy stolen goods, and then clean with


clear water, then dry.

Components of insulating material and severe pollution, use

no halogen cleanser.

For safety, shall comply with the manufacturer's instructions

and guidelines related to SZET Co., LDT.

Trichloroethane, trichloroethylene or carbon tetrachloride is

strictly prohibited!

If an external discharge, discharge surface with a layer of

silicone membrane as a temporary repair, is often effective.

Permanent solution about this kind of problem, recommend

to the SZET Co., LDT.

Check bus bar and grounding system of bolt connection are

tight, isolation function of contact system is correct.

Handcart inserted into the system of institutions and the

contact point of lubrication or inadequate lubrication

disappears, should add lubricant.

To switchgear inside the sliding part and bearing surfaces

(such as valve, interlock and guiding system, screw

mechanism and the hand wheel, etc.) in oil. Or clean to oil,

lubricant.

Follow maintenance guidance in specific switchgear


specifications.

7.3 Repair

7.3.1 General Repair

Immediately after finding defects repair.

By mechanical methods, such as copper brush wipe out

steel and other steel components of the paint on the

damage area of rust, grind mill around the paint layer and

gently remove the oil, then coated with anti-corrosive primer

immediately, with primer is dry coating paint. Can only use

compatible paint.

With copper brush to clean the function of the galvanized or

chrome plated white rust stain on the surface of the element,

use dry, clean, not silk soft cloth to wipe the rusty spot

particles, after installed in addition to oil, coated with primer

immediately, after dry coating paint.

Moving and rotating parts (such as axis and link) can't paint,

but be uniformly lubricant

7.3.2 Replacing Components

Component replacement please contact SZET Co., LDT.,

according to the specific situation


7.4 Spare Parts Spare parts, there is a comprehensive list of spare parts. When

purchasing spare parts, should indicate the corresponding

switchgear or the specifications of the circuit breaker.

Table 2 Procedures and Energy Storage Conditions Corresponding Relationship (With Electric

Energy Storage Mechanism Of Circuit Breaker Handcart In Running Location)

Operating Procedures

(Switchgear Door Has Been Closed)

Operating Result

Circuit Breaker Position Storage Conditions

Then possible operation

Start the Energy-Storage Motor

Energy Storage

Automatic Energy Storage On-Off

Circuit Breaker Closing On

Off

Off-On-Off or Automatic

Reclosing Program Automatic Energy Storage Again

Circuit Breaker Off On-Off

Circuit Breaker On On

Off

Automatic Energy Storage Again Off-On-Off or Automatic

Reclosing Program

Automatic Reclosing Program Off (Automatic Energy Storage)

(With the Help Of a Protection

System Stimulate) On On-off

Off


Automatic Energy Storage

Circuit Breaker On On

Off

Automatic Energy Storage Again Off-On-Off or Automatic

Reclosing Program

*Let the handcart in the test position (control line plug in), mechanical operation

test of the circuit breaker can be performed.

installation and maintenance manual -...

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