• Author / Uploaded
• Edwin Quispe

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ENhanced TEChnology

www.entecene.co.kr

Solid Dielectric Pad Mount Switchgear

Ver. 2.0

Prolog

World is moving out to the Universe to find out how to protect and not destroy the earth. As the global warming is the top issue in 21centry, Electric Power System must be seeking an innovation to support making clean world. Solid Dielectric Product would be one of the best solution, removing SF6 gas and supply non-gas product, it will provide not only clean world but also safer Power Distribution System. Solid Dielectric Pad Mount Suitchgear for Underground Power Distribution System are used to minimize outage time and area. Solid Dielectric Pad Mount Suitchgear use Vacuum Interrupter with independent phase structure and magnetic actuator as an operation mechanism. Above of all, by removing SF6 gas use, Solid Pan Mount Switchgear increases safety and guarantees maintenance free Operation. In addition, Solid Dielectric Pad Mount Suitchgear has embedded Partial Discharge Diagnosis, this monitoring system can check not only by using interface software at the site but also by a remote communication at the control center station.

Solid Dielectric Pad Mount Switchgear

Safety

Feature

Environmentally Friendly Product

•Explosion free by gasless •Maintenance free by Epoxy molding structure

Ratings

2_3

•Free from global warming SF6 gas use

New Technology

Convenience

•Embedded Partial Discharge Monitoring(Local/Remote) •Extra slim control(Extra compact size) •Main switching & Earth switching using Vacuum Interrupter •Embedded vacuum interrupter

•Independent phase structure •Remote Communication Using ETCCU104 Protection Relay With Built-in RTU

Item

Unit

Rated Maximum voltage

kV

Load Break Switch 15

27

15

Circuit Breaker 27

Rated continuous current

A

630

630

630

630

Closed loop and load breaking current

A

630

630

630

630

Cable charging breaking current

A

25

25

25

25

Transformer magnetizing breaking current

A

21/15

21/15

21/15

21/15

Short circuit breaking capacity

kArms

-

-

12.5

12.5

Symmetrical short time current, 1 sec

kArms

12.5

12.5

12.5

12.5

Peak withstand current

kApeak

32.5

32.5

32.5

32.5

Short circuit making current

kApeak

32.5

32.5

32.5

32.5

Basic impulse withstand voltage(1.2 x 50㎲)

kV

85/110

125

110

125

Power frequency withstand voltage, dry

kV

50

60

50

60

DC withstand voltage, 15min.

kV

53

78

53

78

Corona extinction voltage

kV

11

19

11

19

Solid Dielectric Pad Mount Switchgear Technical Characteristics

Characteristics

Circuit Breaker

Load Break Switch

• Separate Main & Earth switching in vacuum interrupter

• Separate Main & Earth switching in vacuum

with safety interlock

interrupter with safety interlock

• Magnetic Actuator Mechanism (Open/Close Indicator)

• Spring toggle mechanism (Open/Close Indicator)

• Independent phase structure

• Independent phase structure

• Inter-source power supply for Relay control

• Inter-source power supply for Relay control

• Voltage Sensing(Capacitor Voltage Divider /

• Voltage Sensing(Capacitor Voltage Divider /

Resistor Voltage Divider) • Auto Load Transfer Switch (option) • Rechargeable Battery(24V) for dead line CB operation • Emergency Trip Device (option) • Operation counter

Resistor Voltage Divider) • Live line detector (option) • Manual operation handle • Operation counter

Voltage/Current sensing bushing

Live-Line Indicator(Manual type switchgear)

• Current Transformer : 1000 :1 ratio(User’s choice)

• Live line indicator is provided on each circuit for safety

• Accuracy : CVD type : 2.5%(Standard)

RVD type P/T : 1%(option) • Epoxy bushing : ANSI or DIN standard

Battery • 24V DC, 40AH

Earth Terminal • Convenient earthing

Manual Trip Device(Option) • In case of No external power source and Battery Dead,

Operation is available • Consist of Lithium lon Battery DC 15V

Embedded Partial Discharge Diagnosis

•WSPDA : Window Step Partial Discharge Analysis •PD metering in accordance with IEC20270

and IEEE Std.1291 •Corona, Inner PD, Noise detection •Real time data transfer (Phase A,B,C, PD magnitude,

Angle) •PD pickup value setting available from the remote •PD Osc’(∅-q) / PRPDA (∅-q-n) •PD status and value can be monitored with on-line &

real time equipment •Easy to build Database from Diagnosis data •Power Distribution 15kV, 27kV, 38kV

• Dead line operation available during 48hours • Rechargeable by auxiliary power source(110/220Vac)

Solid Dielectric Pad Mount Switchgear

Switchgear menu

Total Number of Circuit

Total Number of Circuit

Configuration

4 Load Break Switch

Configuration

6

ETPS1-4-2S1B1W-A-E Circuit Break

4_5

ETPS2-6-2S3B1W-A-E

Direct Way

Switch Without Earth

* MULTIPLE COMBINATION OF CIRCUITS ARE AVAILABLE

Ordering menu : 1~6

G : Gas type S : Solid type

1 : 15kV 2 : 27kV

N : Total number of way(1~6)

Ex) ETPG1-6-2S4B-A-WE , ETPS2-4-2S2B-A-E

S : Load Break Switch B : Circuit Breaker W : direct way SW : Switch without Earth

E : Earthed M : Manual NE : Not Earthed E : Electrical A : Auto(Built-In RTU option)

Control Part

Contorl : ETCCU104

Control Protection and Metering

Protection

Metering

• Time Current Curve editable

• Voltage, Current

• IEEE, IEC and 37 non-standard inverse time curves

• Demand watts and VARs and frequency

• Protective settings in nonvolatile memory during power failure

• Load Profile data & Ocillogram

• Delay time overcurrent protection(51P,51G)

• Power-KW/KVAR/KVA

• Instantaneous overcurrent protection(50P,50G)

• Power factor

• Negative sequence overcurrent protection(46)

• 3PH Power-KVA/KW/KVAR/PF

• Cold load pickup and sequence coordination

• Energy

• Underfrequency and load shedding(81) • Undervoltage, overvoltage detection and alarm(27,59)

• RS232 Ports, RS 485, TCP/IP Ports

Remote Communication

• DNP3.0, IEC60870-5-101/104, MODBUS Protocol available • Built-In RTU (Option) • Setting, Metering and Data records accessible

(Pos’ W/H, Pos’ V/H, NEG’s W/H, NEG V/H)

Solid Dielectric Pad Mount Switchgear Construction

25.8kV Solid Pad Mount Switchgear (2S2B)









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Construction









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Table of Locations 1 2 3 4 5

6 7 8 9 10

Main Switch Earthing Switch Circuit Breaker Epoxy Housing Manual Operation Handle

11 12 13 14 15

Controller Control Power Switch Emergency Trip Device Lifting lugs Capacitor Box

Battery Box Modem Bracket PT CT Earthing Terminal

25.8kV Solid Pad Mount Switchgear (3S2B)





 



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