chinatcs · 6. can be equipped with type zn63a (vs1) and imported type vd4 vacuum circuit breaker....

Tianshui Changcheng Switchgear Factory

KYN28A-12 (GZS1)

A.C METALCLAD REMOVABLE SWITCHGEAR

FOR INDOOR USE

CHINATCS2001.09


KYN28A-12 (GZS1) 1

KYN28A-12 (GZS1)

A.C Metalclad Removable Switchgear for Indoor Use

--------The Leader in Switchgear Up to 12kV

1. The cabinet is set up with the parts made of by aluminum-coated zinc plates.

2. Complete metalclad and isolated.

3. All operations can be carried out with the cubicle door closed.

4. The degree of protection of the enclosure is IP4X, which can prevent sundries and reptiles

from entering.

5. Simple and reliable interlocking system can avoid misoperations.

6. Can be equipped with type ZN63A (VS1) and imported type VD4 vacuum circuit breaker.

7. Few maintenance for the vacuum circuit breaker and its operation device in the H.V

compartment.

8. It is easy to replace circuit breaker, and the truck is provided with perfect

interchangeability.

9. The cabinet can be mounted against the wall and maintenance can be carried out in front

of the cubicles, thus less room required.

10. Easy connections for secondary circuit in the wiring channel with rich space.

11. Rich area for connection enough cables in cable compartment.

12. The cable compartment can be inspected easily through the front inspection window.

13. Quick earthing switch for earthling and short-circuit case.

14. Conforming to the standards of GB3906, DL404, and IEC298.


KYN28A-12 (GZS1) 2

1 General

1.1 Summary

Type KYN28A-12 (GZS1) A.C Metalclad Removable Switchgear manufactured by Tianshui

Changcheng Switchgear Factory (called the switchgear or the switchgear in the following)

which is indoor power distributing equipment of 3-phase, A.C 50Hz system, is suitable to be

used to receive and distribute the electric power of 3.6 ~ 12 kV power system, as well as to

control, protect and monitor the circuit. The switchgear conforms to the standards of GB3906,

DL404, IEC298 and etc. The switchgear is provided with called 5-prevention function, that is:

Prevent the circuit-breaker from misoperation;

Prevent the truck from being pushed and pulled on-load;

Prevent the earthing switch from being closed while the switchgear is electrified;

Prevent the switchgear from being electrified with the earthing switch being closed;

Prevent entering electrified compartment.

The switchgear can be equipped with type ZN63A (VS1) as well as imported type VD4

vacuum circuit breaker.

1.2 Service Conditions

The switchgear can meet the requirement specified in the national standard GB11022 as well

as the requirement of condensation and dirty grade II.

2 Technical parameter

2.1 Technical Parameter of the Switchgear

The technical parameter of the switchgear is shown in table 1.


KYN28A-12 (GZS1) 3

Table 1 The Technical Parameter of the Switchgear

Item Unit DataRated voltage kV 3.6 7.2 12

Power frequency withstand voltage(1 min) (r.m.s) kV 42Rated

insulationlevel Lightning impulse withstand voltage

(full wave) kV 75

Rated frequency Hz 50Rated current A 630,1250,1600,2000,2500,31504s withstand current (r.m.s.) kA 20,25,31.5,40,50Rated withstand current (peak) kA 50,63,80,100,130

Enclosure IP4XProtectiondegree With the door of circuit-breaker compartment open IP2X

2.2 The Technical Parameter of Type ZN63A Vacuum Circuit-breaker

The Technical parameter of the type ZN63A vacuum circuit breaker is shown in table 2.

Table 2 The Technical parameter of the type ZN63A vacuum circuit-breaker

Item Unit DataRated voltage kA 3.6, 7.2, 12

Power frequency withstand voltage(1 min) (r.m.s) 42

Lightning impulse withstand voltage(peak value before breaking) 75

Ratedinsulationlevel Lightning impulse withstand voltage

(peak value after breaking)

kV

75

Rated frequency Hz 50Rated current A 630,1250,1600,2000,2500.3150Single and back-to-bank capacitor bank breaking current A 630/400Rated short-circuit breaking current 20,25,31.5,40,50Rated short-circuit withstand current (4s r.m.s) 20,25,31.5,40,50Rated short-circuit marking current (peak) 50,63,100,130Rated peak withstand current

kA

50,63,100,130Rated operating sequence O-180s-CO-180s-COAuto-reclosing operating sequence O-0.3s-CO-180s-COClosing time 100Opening time 50Arcing time

ms15

Breaking times aganist rated short-circuit breaking current times 50 (30*)Mechanical endurance cycles 20000Accumulating thickness of permissive consumption forfixed and movable contacts mm 3

Note:* The breaker times against rated short circuit breaking current is 30 times when the rated shortcircuit breaking current is 40kA.


KYN28A-12 (GZS1) 4

2.3 The Technical Parameter of Operating device

The technical parameter of operating device is shown in table 3.

Table 3 Technical Parameter of Operating Device

Item Unit Data

Closing coil DC220, 110AC220, 110Rated operating

voltage Opening coilV

Closing coilPower of coil

Opening coilW 245

Power of stored-energy motor W 70

Rated voltage of closing coil of stored-energy motor V DC220, 110

Energy storage time s 15

3 Overall Dimension and Weight

3.1 Cabinet

The overall dimension and weight of cabinet is shown in Figure 1 and table 4.

Table 4 The Overall Dimension and Weight of Cabinet

Height A (mm) 2365

Rated current of sub busbar up to 1250A, raged short timewithstand current being 31.5kA 800Width B

(mm) Rated current of sub busbar above 1250A 1000

Cable incoming and outgoing feeder 1500Depth C(mm) Overhead incoming and outgoing feeder 1800

Weight (kg) 800 ~ 1200


KYN28A-12 (GZS1) 5

Fig 1 The overall dimension of the switchgear

3.2 Circuit Breaker

The overall dimension of type ZN63A vacuum circuit breaker is shown in Figure 2(a) andFigure 2(b).

Figure 2(a) The overall dimension of type ZN63A-12/1250-31.5 vacuum circuit breaker


KYN28A-12 (GZS1) 6

Figure 2(b) The overall dimension of type ZN63A-12/3150-40 vacuum circuit breaker

4 Structure of Switchgear

The switchgear consists of 2 parts of fixed cabinet and removable parts (called truck). The

typical structure drawing of the switchgear is shown in Figure 3 and Figure 4. The enclosure

and all partitions of each functional units are all made by aluminum-coated zinc plate. The

degree of protection of the enclosure is IP4X, the degree of protection with the door of

circuit-breaker compartment open is IP2X.

The switchgear can be equipped with type ZN63A (VS1) vacuum circuit breaker, The

switchgear can be arranged in double rows, that is, arranged in back-to-back or face-to-

face way. Because the switchgear can be installed and adjusted from the front, it can be

installed against wall to save floor area as well as increase the safety of the switchgear and

the flexibility for installation.

4.1 Enclosure and Partitions

The enclosure and partitions of the switchgear is set up by aluminum-coated zinc plate

which is machined and bent by NC machine, so the finished switchgears are provided with

unity in size. The aluminum-coated zinc plate has excellent corrosion-proof and oxidation-

resistance function as well as high mechanical intensity, The switchgear is separated into

circuit-breaker compartment, busbar compartment, cable compartment, and instrument

compartment (LV compartment) by partitions. The enclosure for every unit is earthed

reliably.


KYN28A-12 (GZS1) 7

4.2 Truck

The framework of truck is set up by thin steel plate through welding and riveting, the thin

steel plate is processed by laser cutting machine. The truck can be divided into circuit-

breaker truck, voltage transformer truck, measuring truck, and etc. the trucks with same

specification can be interchanged. The truck has test position and service position inside

the cabinet. The locking device is provided to every position in order to prevent the truck

from being moved away from its position. The truck can not be removed unless the

interlocking device being released. For example, the circuit-breaker truck can not be

removed before the circuit-breaker opens.

A ---- Busbar compartment B ---- Circuit breaker truck compartment

C ---- Cable compartment D ---- Instrument compartment1--Pressure releasing device; 2--Enclosure; 3--Branch busbar; 4--Busbar bushing; 5--Main busbar;

6--Fixed contacts device; 7--Fixed contacts box; 8--Current transformer; 9--Earthing switch;

10--Cable; 11--Surge arrester; 12--Main earthing busbar; 13--Partition; 14--Shutter;

15--Secondary plug; 16--Circuit-breaker truck; 17--Heater; 18--Removable partition;

19--Operating device for earthing switch; 20--Control busbar; 21--Cable cover

Figure 3 Typical structural drawing of the switchgear (being installed free from wall)


KYN28A-12 (GZS1) 8

A ---- Busbar compartment B ---- Circuit breaker truck compartment

C ---- Cable compartment D ---- Instrument compartment1--Pressure releasing device; 2--Enclosure; 3--Branch busbar; 4--Busbar bushing; 5--Main busbar;

6--Fixed contacts device; 7--Fixed contacts box; 8--Current transformer; 9--Earthing switch;

10--Cable; 11--Surge arrester; 12--Main earthing busbar; 13--Partition; 14--Shutter;

15--Secondary plug; 16--Circuit-breaker truck; 17--Heater; 18--Removable partition;

19--Operating device for earthing switch; 20--Control busbar; 21--Cable cover

Figure 4 Typical structural drawing of the switchgear (being installed against wall)


KYN28A-12 (GZS1) 9

4.3 Compartments

4.3.1 Circuit Breaker CompartmentSpecial rail are located inside the circuit-breaker compartment for the truck to move and work

in, the circuit-breaker can move between service position and test position in the rail. The

shutter (14) is mounted on the rear wall of circuit-breaker compartment. The shutter (14) can

open automatically during moving the truck from test position to service position, the shutter

can close completely after moving the truck from service position to test position, which

prevents the operators from touching the live parts. The truck can be operated with the

cabinet door closed. Through the inspection window, the position of truck, the ON/OFF

buttons (marking the circuit-breaker closing/opening) on the truck, ON/OFF mechanical

position indicator can be observed as well as energy-stored/energy-released indicator can be

observed clearly.

4.3.2 Busbar CompartmentThe busbar (5) is led from one switchgear to another, and fixed with branch busbar (3) and

fixed contacts terminal box. All busbar can be sealed with thermal shrinkage insulation

bushing in accordance with the requirement of users. Flat sub busbar is connected with fixed

contact terminal box and main busbar by bolts without any other wire clips and insulators. The

connecting bolts on the busbar can be enclosed with insulation bushing and cap. The busbar

is fixed with busbar bushing (4) when passing through the partitions, which can prevent the

default from extending to adjacent switchgear when internal arc appears, and increase the

intensity of busbar.

4.3.3 Cable CompartmentThe current transformer (8) and earthing switch (9) can be mounted at the top, rear wall and

front wall of the cable compartment, the surge arrester (11) can be mounted inside the cable

compartment. The operator can enter the cabinet from front to mount the cable after the truck

(16) and removable partition (18) being removed. Special cable connecting conductor is

located in the cable compartment, the removable metal cable cover (21) with slot is located

under the cable compartment, thereby, the cable connecting at site is made convenient.

4.3.4 LV CompartmentRelays, protective elements, instruments, voltage indicators and secondary devices for

special requirement can all be mounted in LV compartment. The control wires are placed in


KYN28A-12 (GZS1) 10

the wire channel with enough area and closed with metal cover, the wire channel on the left

side is designed for control wires, the wire channel for the secondary wire of the switchgear

itself is located on the right side.

4.4 Interlocking Device

The switchgear has reliable interlocking device, which can guarantee the safety of operators

and the switchgear. It s function is as following:

a) The truck can be moved from the test position to the service position only when the

earthing switch is in open position.

b) The circuit breaker can not be operated before the truck being locked in the test or the

service position.

c) The secondary plug can not be removed with the truck in the service position.

d) The truck can not be moved from the test position to the service position with the

earthing switch closed.

e) The earthing switch can be operated only when the truck is in the test position.

4.5 Pressure Releasing Device

The pressure releasing devices are designed in truck compartment, busbar compartment as

well as cable compartment. When the air pressure inside the switchgear rises because of the

internal fault arc appearing on the circuit-breaker or busbar, the special seal ring on the door

can seal the front part of the cabinet, and the pressure releasing metal plate on the top can be

opened automatically, thereby, the gas is given out and the pressure inside goes down, so the

operators and the switchgear is in safety.

4.6 Interlocking between secondary plug and truck

The secondary wires of the switchgear and truck are connected by secondary plug, the

movable contacts of the secondary plug are connected with the truck by a nylon blowpipe,

The secondary fixed contact holder is located on the top right of the truck compartment. The

secondary plug can be pushed in and pulled out only when the truck is in the test position, on

the other hand, the secondary plug is licked and can not be removed when the truck is in the

service position.


KYN28A-12 (GZS1) 11

4.7 Earthing Device

The earthing copper plate (10mm x 40mm) is designed in the cable compartment, it can pass

throng the neighboring switchgears and connected with the cabinet reliably. It is used for the

parts to be directly earthed, because the cabinet is assembled by aluminum-coated zinc plate,

the whole cabinet is earthed reliably, which makes the operators safe when they touch the

enclosure.

5 Installation and Adjustment

5.1 Type of Foundation

5.1.1 The construction of foundation for installing the switchgears should conform to the

Technical Specification for Electric Power Construction and Inspection.

5.1.2 The foundation for the switchgears should be cast for 2 times. For the first time, the

foundation for the structural components used to install the switchgears such as angle

steel, square steel or channel steel, should be cast; for the second time, the

supplementary layer of concrete surface should be cast, the thickness of which is

60mm. The supplementary layer of concrete surface should be lower than the

structural components used to install the switchgears for 1~3mm.

5.1.3 The foundation frame drawing is shown in Figure 5.

5.1.4 The foundation frame should be installed in order, the technical deviation for installing

the foundation frame is 1mm/mm2.

5.2 Installation of the Switchgear

5.2.1 The size of installing foundation and the installing size of the switchgear is shown in

Figure 6 and Figure 7.

5.2.2 The operating corridor in front of the switchgears should be 2.5m when the switchgears

are installed in single row; and the operating corridor between two rows of the

switchgears should be 3m when the switchgears are installed in double rows. The

installing drawing of switchgears installed face to face and against the wall is shown in

Figure 8.

5.2.3 Move the switchgear to the specified position according to the requirement and

drawings. If the switchgears in one roe is too many, the arrangement should begin an

the center.


KYN28A-12 (GZS1) 12

5.2.4 Special transporting tools, such as cranes and forks, are necessary, it is not permitted

to use rollers and crowbars.

5.2.5 Pull the circuit breaker trucks out of the switchgears, and keep them appropriately.

5.2.6 Loosen the screws mounting the horizontal partition (18) under the circuit-breaker

compartment, and remove the horizontal partition (18).

5.2.7 Loosen and remove the cable cover (21).

5.2.8 Remove the cover of the control wire channel on the left side of the switchgear, and the

one on the right side.

5.2.9 Remove the hoisting plated and fastenings.

5.2.10 The rear cover of the switchgear and the cover of busbar compartment can be moved

away for installing when the switchgear is installed from wall.

5.2.11 Install the switchgear on the foundation in accordance with specified sequence. The

levelness in horizontal and vertical direction should not exceed 2mm.

5.2.12 After being combined (arranged) on the foundation, the switchgears should be

connected with the foundation frame by foundation bolts or by welding.

6 Installation of Busbar

The busbar in the switchgear are rectangular busbar and divided into sections, the busbar for

switchgear with different current are only different from quantity and specification. The

following should be complied with when installing the busbar.

6.1 Cleaning the busbar with soft cloth that is clean and dry, check whether there isdamage on the insulating bushing, apply conductive paste or neutral vaseline onthe connecting position of busbar.

6.2 Install the busbar in sequence, connect the sections of busbars andcorresponding sub busbar together, insert proper pads and then screw downwith bolts.


KYN28A-12 (GZS1) 13

7 Earthing Device

7.1 Connect the earthing busbar (12) of all switchgear with prepared connectionboard.

7.2 Connect all earthing wires inside the switchgear.

7.3 Connect the foundation frame with the earthing plate.

7.4 Connect the earthing wire of earthing contact with the earthing busbar of thedistributing panel.

Width (A) Depth (B) M N L L11500 (cable incoming and outgoing) 1450 880800 1800 (overhead incoming and outgoing) 630 800 1750 10401500 (cable incoming and outgoing) 1450 8801000 1800 (overhead incoming and outgoing) 830 1000 1750 1040

Figure 5 The foundation frame drawing of the switchgear


KYN28A-12 (GZS1) 14

Figure 6(a) The foundation drawing for the switchgears


KYN28A-12 (GZS1) 15

Depth L1500 14501800 1750

Figure 6(b) The foundation drawing for the switchgears


KYN28A-12 (GZS1) 16

A-AThe switchgears installed free from wall

A-AThe switchgears installed against wall

C-direction

Figure 6 (c) The foundation drawing for the switchgears


KYN28A-12 (GZS1) 17

Width of theswitchgear

(A)Depth of the switchgear (b) L1 L2 L3

1500(cable incoming & outgoing) 880800

1500(overhead incoming & outgoing)530 630

990

1500(cable incoming & outgoing) 8801000

1500(overhead incoming & outgoing)730 830

990

Figure 7 Drawing for installing dimension of the switchgears


KYN28A-12 (GZS1) 18

Figure 8 The installing drawing for the switchgears installed face-to-face against wall


KYN28A-12 (GZS1) 19

8 Installation of Busbar Bridge

The installing dimension of the busbar bridge is shown in Figure 9.

Figure 9 The installing dimension of the busbar bridge

9 Installing dimension for overhead incoming scheme

The installing dimension for overhead incoming scheme is shown in Figure 10.

Figure 10 The installing dimension for overhead incoming scheme


KYN28A-12 (GZS1) 20

10 Primary Circuit Scheme

The primary circuit scheme of the switchgears is shown in table 5.

11 Secondary Circuit Scheme

11.1 The electric wiring diagram of circuit-breaker truck is shown is Figure 11.

11.2 The typical control circuit (AC operation) of the switchgear with ZN63A vacuumcircuit-breaker (VCB) is shown in Figure 12.

11.3 The typical control circuit (DC operation) of the switchgear with ZN63A vacuumcircuit-breaker (VCB) is shown in Figure 12.

12 Ordering Information

Following information should be supplied when ordering:

12.1 Primary scheme serial No., primary scheme system drawings, arrangementdrawings and layout drawings.

12.2 Secondary functional drawings, arrangement drawings of terminals.

The terminals will be arranged in accordance with the standard mode by themanufacturer if the arrangement drawings of terminals are not supplied.

12.3 The type, specification and quantity of the electric components inside theswitchgears.

12.4 Summary schedule of electric equipments.

12.5 The span across two rows of switchgears and height when busbar bridge

(busbar bridge between tow rows of switchgears or the ones between the walland swtichgear) is needed.

12.6 If the switchgears is used in special condition, it should be specified whenordering.

12.7 The kinds and quantity of extra accessories and spare parts requited.


KYN28A-12 (GZS1) 21

The secondary electric diagram of the switchgear with DC control.(The switchgear without anti-jumping function, the circuit-breaker with anti-jumping function.)

The secondary electric diagram of the switchgear with AC control.(The switchgear without anti-jumping function, the circuit-breaker with anti-jumping function.)

No. Symbol Name1 S1 Micro-switch for energy storage2 S2 Auxiliary switch interlocked with the principal axis3 K0 Intermediate relay4 V1~V3 Rectifying elements5 HQ Closing electromagnet6 TQ Opening electromagnet7 M Motor for energy storage8 Y1~Y3 Electromagnet for over-current release9 SW, YW Indicator for position of truck

Figure 11(a) The Electric diagram of circuit-breaker (with anti-jumping function)


KYN28A-12 (GZS1) 22

The secondary electric diagram of the switchgear with DC control(The switchgear with anti-jumping function, the circuit-breaker without anti-jumping function)

The secondary electric diagram of the switchgear with AC control(The switchgear with anti-jumping function, the circuit-breaker without anti-jumping function)

No. Symbol Name1 S1 Micro-switch for energy storage2 S2 Auxiliary switch interlocked with the principal axis3 K0 Intermediate relay4 V1~V3 Rectifying elements5 HQ Closing electromagnet6 TQ Opening electromagnet7 M Motor for energy storage8 Y1~Y3 Electromagnet for over-current release9 SW, YW Indicator for position of truck

Figure 11(b) The electric diagram circuit-breaker (without anti-jumping function)


KYN28A-12 (GZS1) 23

KK:LW2-Z-a.4.6a.40.20/F8; (HA,TA):LA18-22LD,HD,UD(1LD,1HD):AD1-25/21 220V(XD5) 1RD,2RD,3RD,4RD,HRD:RT19-16/6AHK:KN3-A 1Z1D; SW,YW:F1-41/Y.H(The indication ;amp of truck position)

The switchgear without anti-jumping function

KK:LW2-Z-a.4.6a.40.20/F8; (HA,TA):LA18-22LD,HD,UD(1LD,1HD):AS1-25/21 220V(XD5) 1RD,2RD,3RD,4RD,HRD:RT19-16/6ATBJ:DZ-52/220V;HK:KN3-A 1Z1D SW,YW:F1-41/Y.H(The indication ;amp of truck position)

The switchgear with anti-jumping function

Figure 12 The typical control circuit for the switchgear equippedwith type ZN63A vacuum circuit-breaker (AC operation)


KYN28A-12 (GZS1) 24

KK:LW2-Z-a.4.6a.40.20/F8; (HA,TA):LA18-22;ZG11-50W/1KLD,HD,UD(1LD,1HD):AD1-25/21 220V(XD5) 1RD,2RD,3RD,4RD,HRD:RT19-16/6AHK:KN3-A 1Z1D; SW,YW:F1-41/Y.H(The indication ;amp of truck position)

The switchgear without anti-jumping function

KK:LW2-Z-a.4.6a.40.20/F8; (HA,TA):LA18-22;ZG11-50W/1KLD,HD,UD(1LD,1HD):AS1-25/21 220V(XD5) 1RD,2RD,3RD,4RD,HRD:RT19-16/6ATBJ:DZ-284/220V;HK:KN3-A 1Z1D SW,YW:F1-41/Y.H(The indication ;amp of truck position)

The switchgear with anti-jumping function

Figure 13 The typical control circuit for the switchgear equippedwith type ZN63A vacuum circuit-breaker (DC operation)


KYN28A-12 (GZS1) 25

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KYN28A-12 (GZS1) 26

Table 5 Main Circuit Schemes

Scheme serial No. 001 002 003 004 005

Primary system diagrams

Rated current (A) 630 ~ 3150ZN63A (VS1)

VCBVD4

1 1 1 1 1

LZZBJ1-10GYLZZB1-10GYCTLZZB-10GY

2 2 2 3 3

RZL-10VT

REL-10HV Fuse RN2-10

Earthing Switch JN15 1 1 1

Main Prim

ary components

Surge arrester

Application Power receiving& Feeding

Power receiving& Feeding




Remarks Width of the switchgears is 1000m when their rated current is above 1600A.

Scheme serial No. 006 007 008 009 010



VCBVD4

1 1 1 1 1


3 2 2 2 2

RZL-10VT



Main Prim

ary components

Surge arrester 3

Application Power receiving& Feeding

Coupler(right)

Coupler(right)

Coupler(left)

Coupler(left)



KYN28A-12 (GZS1) 27

Table 5 Main Circuit Schemes (Continuous)

Scheme serial No. 011 012 013 014 015



VCBVD4

1 1 1 1 1


2 2 2 3 3

RZL-10VT


Earthing Switch JN15 1 1

Main Prim

ary components

Surge arrester

Application Coupler(right)

Coupler(right)

Coupler(left)

Coupler(left)

Overheadincoming (left

coupler)


Scheme serial No. 016 017 018 019 020



VCBVD4

1 1 1 1 1


3 3 3 3 2

RZL-10VT

REL-10HV Fuse RN2-10 3 3


Main Prim

ary components

Surge arrester

ApplicationOverhead

incoming (leftcoupler)

Overheadincoming (right

coupler)


coupler)


coupler)


coupler)



KYN28A-12 (GZS1) 28


Scheme serial No. 021 022 023 024 025



VCBVD4

1 1 1 1 1


3 3 2 2 2

RZL-10VT



Main Prim

ary components

Surge arrester 3

ApplicationOverhead

incoming (rightcoupler)


coupler)

Overheadincoming and

outgoing

Remarks 1. Width of the switchgears is 1000m when their rated current is above 1600A.2. The depth of No.23, No.24 and No.25 is 1800mm.

Scheme serial No. 026 027 028 029 030



VCBVD4

1 1 1 1 1


3 3 3 2 2

RZL-10VT

REL-10RZL-10 2 RZL-10 2

HV Fuse RN2-10 3 3Earthing Switch JN15 1 1 1

Main Prim

ary components

Surge arrester 3

ApplicationOverhead

incoming andoutgoing

Overheadincoming and

outgoing

Cable incoming& PT

Cable incoming& PT

Remarks 1. Width of the switchgears is 1000m when their rated current is above 1600A.2. The depth of No.26, No.28 and No.29 is 1800mm.


KYN28A-12 (GZS1) 29


Scheme serial No. 031 032 033 034 035



VCBVD4

1 1 1 1 1


2 3 3 3 2

RZL-10VT

REL-10RZL-10 2 RZL-10 2 RZL-10 2 RZL-10 2 RZL-10 3

HV Fuse RN2-10 3 3 3 3 3Earthing Switch JN15 1

Main Prim

ary components

Surge arrester 3 3

Application Cable incoming& PT

Cable incoming& PT

Cable incoming& PT

Cable incoming& PT

Cable incoming& PT


Scheme serial No. 036 037 038 039 040



VCBVD4

1 1


2 2

RZL-10VT

REL-10REL-10 3 REL-10 3 RZL-10 2 REL-10 3 RZL-10 2

HV Fuse RN2-10 3 3 3 3 3Earthing Switch JN15 1

Main Prim

ary components

Surge arrester 3

Application Cable incoming& PT

Cable incoming& PT

Voltagemeasuring

Voltagemeasuring

Voltagemeasuring &

arrester



KYN28A-12 (GZS1) 30


Scheme serial No. 041 042 043 044 045



VCBVD4


RZL-10VT

REL-10REL-10 3 RZL-10 2 REL-10 3 RZL-10 2 RZL-10 2

HV Fuse RN2-10 3 3 3 3 3Earthing Switch JN15

Main Prim

ary components

Surge arrester 3 3 3

ApplicationVoltage

measuring &arrester

Voltagemeasuring &

arrester

Voltagemeasuring &

arrester

Voltagemeasuring &

busbar coupler

Voltagemeasuring &

busbar coupler


Scheme serial No. 046 047 048 049 050



VCBVD4


RZL-10VT

REL-10REL-10 3 REL-10 3 RZL-10 2 RZL-10 2 REL-10 3


Main Prim

ary components

Surge arrester 3 3 3

ApplicationVoltage

measuring &busbar coupler

Voltagemeasuring &

busbar coupler

Voltagemeasuring &

arrester &busbar coupler

Voltagemeasuring &


Voltagemeasuring &


Remarks 1. Width of the switchgears is 1000m when their rated current is above 1600A.2. The depth of No.69, No.70 is 1800mm.


KYN28A-12 (GZS1) 31


Scheme serial No. 051 052 053 054 055



VCBVD4


RZL-10VT

REL-10REL-10 3

HV Fuse RN2-10 3Earthing Switch JN15

Main Prim

ary components

Surge arrester 3

Application

Voltagemeasuring &


Busbar coupler Busbar coupler Isolating Isolating &coupler (left)


Scheme serial No. 056 057 058 059 060



VCBVD4


RZL-10VT

REL-10RZL-10 2 RZL-10 2

HV Fuse RN2-10 3 3Earthing Switch JN15 1

Main Prim

ary components

Surge arrester

Application Isolating &(right) coupler

Isolating & (left)coupler &voltage

measuring

Isolating &(right) coupler &

voltagemeasuring

Outgoingconverting

phase

Outgoingconverting

phase



KYN28A-12 (GZS1) 32


Scheme serial No. 061 062 063 064 065



VCBVD4


2 2 3 3 2

RZL-10VT

REL-10RZL-10 2 RZL-10 2 RZL-10 2 RZL-10 2 REL-10 3


Main Prim

ary components

Surge arrester

Application Measure & leftcoupler

Measure & rightcoupler

Measure & leftcoupler




Scheme serial No. 066 067 068 069 070



VCBVD4

1 1


2 3 3 2 2

RZL-10VT

REL-10REL-10 3 REL-10 3 REL-10 3 RZL-10 2 RZL-10 2


Main Prim

ary components

Surge arrester

Application Measure & rightcoupler



Incoming &measure

Incoming &measure



KYN28A-12 (GZS1) 33


Scheme serial No. 071 072 073 074 075



VCBVD4

1 1


2 2 2 3 3

RZL-10VT

REL-10RZL-10 2 RZL-10 2 RZL-10 2 RZL-10 2 RZL-10 2


Main Prim

ary components

Surge arrester

Application Incoming &measure

Incoming &measure

Incoming &measure

Incoming &measure

Incoming &measure


Scheme serial No. 076 077 078



VCBVD4


3 CapacitorBM12.7-16-1 3

RZL-10VT

REL-10TransformerSC4-63/10 1

HV Fuse RN2-10 3 RN3-10 orRN1-10 3 RN3-10 or

RN1-10 3

Earthing Switch JN15

Main Prim

ary components

Surge arrester 3 3

Application Incoming &measure

Stationtransformer

Capacitorprotecting

Remarks 1. Width of the switchgears is 1000m when their rated current is above 1600A.2. The depth of No.76 1800mm.

Note: When the power receiving & power feeding scheme is used as power receiving,the earthing switch should be taken out.

chinatcs · 6. can be equipped with type zn63a (vs1) and imported type vd4 vacuum circuit breaker....

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