HV/MV SWITCHGEAR

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HV/MV SWITCHGEARWHY CHOOSE SKEMA - ---------------------------------- 04GENERAL FEATURES - ------------------------------------- 06AIR INSULATED SWITCHGEAR - ---------------- 08GAS INSULATED SWITCHGEAR - -------------- 09HV/MV CASE STUDIES ---------------------------------- 10

CONTENTS

WHY CHOOSE SKEMA THE MAIN ADVANTAGES FOR CHOOSING SKEMA ARE:

1 FLEXIBILITY AND PERSONALIZATION: FLEXIBLE MANUFACTURING IN ALL THE STAGES OF THE PROJECT TO IMPLEMENT OUR CLIENTS’ SPECIAL REQUIREMENTS

2 OPTIMIZATION OF DELIVERY LEAD TIMES: FROM ENGINEERING TO FINAL COMMISSIONING AND MODIFICATIONS

3 SERVICE AND CUSTOMER CARE: RAPID RESPONSE, EXPERT TECHNI-CAL SUPPORT, COMPREHENSIVE AFTER SALES SERVICE (ON SITE AND FROM HEADQUARTER)

4 “ONE STOP SHOP”: SKEMA CAN SUPPLY HV/MV SWITCHGEAR AND MODULAR SUBSTATIONS, LV SWITCHGEAR AND IPCS SYSTEMS

5 EXPERIENCE: PROVEN TRACK RECORD IN INTERNATIONAL CAPITAL PROJECTS IN THE OIL AND GAS INDUSTRY FOR COMPLEX PACKAGES

0504

GENERAL FEATURES

WITH REFERENCE TO HV/MV SWITCH-

GEAR, SKEMA OPERATES ON A “PRO-

JECT SPECIFIC” APPROACH, WHICH

TAKES INTO ACCOUNT THE CLIENT’S

SPECIFIC REQUIREMENTS AND THE

PROJECT SPECIFICATIONS.

Skema can supply the main power

section of the major original equip-

ment manufacturers worldwide, and

complete and personalize the aux-

iliary and LV compartment, includ-

ing the exhaust gas duct, all doors,

external structures and copper details.

Skema’s HV/MV switchgear are de-

signed and manufactured in accord-

ance to IEC 62271-200 and to the fol-

lowing requirements:

> Maximum operational reliability

> Compact dimensions

> Flexibility and versatility

> Easy installation, function and

maintenance

> Personnel safety

> Possibility of extensions and mod-

ifications

Skema’s HV/MV switchgear can be

provided with sulphur hexafluor-

ide (SF6) circuit breakers, vacu-

um circuit breakers and/or vac-

uum contactors, and they are

arc-proof, so they can be installed

and used in areas characterized by

extreme ambient conditions. 06 07

RATED VOLTAGE 7.2 kV 12 kV 17.5 kV 24 kV

ELECTRICAL FEATURES

Rated power frequency withstand voltage 20 kV 28 kV 38 kV 50 kV

Impulse withstand voltage 60 kV 75 kV 95 kV 120 kV

Rated frequency 50 /60 Hz 50 /60 Hz 50 /60 Hz 50 /60 Hz

Rated short-time withstand current Up to 50 kA3s

Up to 50 kA3s

Up to 50 kA3s

Up to 31.5 kA3s

Peak withstand current Up to 125 kA Up to 125 kA Up to 125 kA Up to 80 kA

Internal arc withstand current Up to 50 kA1s Up to 50 kA1s Up to 50 kA1sUp to 31.5 kA1s

Rated current of the main busbars 4000 A 4000 A 4000 A 3150 A

Feeders rated current with natural ventilation 630÷3150 A 630÷3150 A 630÷3150 A Up to 2300 A

Branch connection rated current with forced ventilation 3600 /4000 A 3600 /4000 A 3600 /4000 A -

MECHANICAL FEATURES

Partition class PM PM PM PM

Service continuity category LSC-2B LSC-2B LSC-2B LSC-2B

Internal arc classification IAC AFLR IAC AFLR IAC AFLR IAC AFLR

Construction Withdrawable Withdrawable Withdrawable Withdrawable

Circuit Breaker Vacuum/SF6 Vacuum/SF6 Vacuum/SF6 Vacuum/SF6

External protection degree IP4X/ IP41/IP42

IP4X/ IP41/IP42

IP4X/ IP41/IP42

IP4X/ IP41/IP42

Internal protection degree IP20 IP20 IP20 IP20

Internal partitions (on request) IP3X IP3X IP3X IP3X

Cable access Front Front Front Front

Cable entry Top-bottom Top-bottom Top-bottom Top-bottom

Installation Indoor Indoor Indoor Indoor

RATED VOLTAGE 12 kV 17.5 kV 24 kV 36 kV

ELECTRICAL FEATURES

Power frequency withstand voltage 28 kV 38 kV 50 kV 70 kV

Lighting impulse withstand voltage 75 kV 95 kV 125 kV 170 kV

Rated frequency 50 /60 Hz 50 /60 Hz 50 /60 Hz 50 /60 Hz

Rated short-time withstand current Up to 31.5 kA3s

Up to 31.5 kA3s

Up to 31.5 kA3s

Up to 31.5 kA3s

Peak withstand current Up to 80 kA Up to 80 kA Up to 80 kA Up to 80 kA

Rated current of the main busbars Up to 2500 A Up to 2500 A Up to 2500 A Up to 2500 A

Insulating Gas SF6 SF6 SF6 SF6

MECHANICAL FEATURES

Partition class PM PM PM PM

Gas-filled compartmentsLoss of service continuity N.A. N.A. N.A. N.A.

Cable termination compartmentsLoss of service continuity LSC-2B LSC-2B LSC-2B LSC-2B

Construction Fixed Fixed Fixed Fixed

Circuit Breaker Vacuum Vacuum Vacuum Vacuum

High Voltage compartments protection degree IP65 IP65 IP65 IP65

Low Voltage compartments protection degree IP4X IP4X IP4X IP4X

Cable access Rear Rear Rear Rear

Cable entry Bottom Bottom Bottom Bottom

Maximum site altitude 1000 m 1000 m 1000 m 1000 m

Installation Indoor Indoor Indoor Indoor

AIR INSULATED SWITCHGEAR GAS INSULATED SWITCHGEAR

0908

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HV/MV CASE STUDIES SKEMA IS A GLOBAL MARKET LEADER IN THE DESIGN, ENGINEERING, MANUFACTURE AND SERVICING OF COMPLETE PACKAGES, INCLUD-ING HV/MV SWITCHGEAR, LV SWITCHGEAR AND IPCS SYSTEMS. SKEMA’S HV/MV SWITCH-GEAR ARE DESIGNED FOR USE IN HV/MV AND MV/LV SUBSTATIONS AND FOR HIGHLY DEMANDING APPLICATIONS. SKEMA COUNTS IN ITS PROJECTS’ PORTFOLIO A PROVEN TRACK RECORD IN THE SUPPLY OF HV/MV SWITCH-GEAR FOR A WIDE VARIETY OF PROJECTS, BOTH AS PART OF COMPLETE PACKAGES AND AS STAND-ALONE SUPPLIES.

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KAZAKHSTAN KAZAKHSTAN

CHINAREVSKOYEFIELD / KAZAKHSTAN ONSHORE

ESKENE WEST RAIL /

KAZAKHSTAN ONSHORE

UzbekistanCaspian Sea

Kyrgyzstan

UzbekistanCaspian Sea

Kyrgyzstan

AIR INSULATED SWITCHGEAR

Rated voltage: 7.2 kVService voltage: 6.0 kVRated power frequency withstand voltage: 20 kV Impulse withstand voltage: 60 kV Rated frequency: 50 HzRated current of the main busbars: 2500 ARated short-time withstand current: 40 kA1sPeak withstand current: 100 kAInternal arc withstand current: 40 kAArc fault duration: 1 secCopper busbar system: BareExternal protection degree: IP40Internal protection degree: IP2XPainting: RAL 7035Design ambient temperature: +40°C

AIR INSULATED SWITCHGEAR

Rated voltage: 12 kV Service voltage: 10 kVRated power frequency withstand voltage: 28 kVImpulse withstand voltage: 75 kV Rated frequency: 50 HzRated current of the main busbars: 1250 ARated short-time withstand current: 25 kA1sPeak withstand current: 63 kAInternal arc withstand current: 25 kAArc fault duration: 1 secCopper busbar system: InsulatedExternal protection degree: IP41Internal protection degree: IP2XPainting: RAL 7035Design ambient temperature: -5°C /+42°C

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KARACHAGANAK / KAZAKHSTAN ONSHORE

SCP EXPANSION / AZERBAIJAN

AND GEORGIA ONSHORE

GEORGIA Caspian Sea

Turkey

IranIraq

Syria

Black Sea

KAZAKHSTAN

AZERBAIJAN

UzbekistanCaspian Sea

Kyrgyzstan

AIR INSULATED SWITCHGEAR

Rated voltage: 12 kVService voltage: 6.0 kV Rated power frequency withstand voltage: 28 kVImpulse withstand voltage: 75 kVRated frequency: 50 HzRated current of the main busbars: 2500/630 ARated short-time withstand current: 25/20 kA1sPeak withstand current: 63/50 kAInternal arc withstand current: 25/20 kAArc fault duration: 1 secCopper busbar system: BareExternal protection degree: IP3XInternal protection degree: IP2XPainting: RAL 7035 and 9002Design ambient temperature: -5°C /+40°C

AIR INSULATED SWITCHGEAR

Rated Voltage: 12 kVService voltage: 10 kVRated power frequency withstand voltage: 28 kV Impulse withstand voltage: 75 kV Rated frequency: 50 HzRated current of the main busbars: 630 ARated short-time withstand current: 25 kA1sPeak withstand current: 63 kAInternal arc withstand current: 25 kAArc fault duration: 1 secCopper busbar system: InsulatedExternal protection degree: IP42Internal protection degree: IP3XPainting: RAL 7032Design ambient temperature: -5°C /+40°C

14 15

TENGIZ / KAZAKHSTAN ONSHORE

SURINAME

Brazil

Bolivia

TOUT LUI FAUT REFINERY / SURINAME

ONSHOREKAZAKHSTAN

GuyanaFrench Guiana

Paraguay

UzbekistanCaspian Sea

Kyrgyzstan

AIR INSULATED SWITCHGEAR

Rated voltage: 7.2/17.5 kVService voltage: 6.0/12.3 kVRated power frequency withstand voltage: 20/38 kVImpulse withstand voltage: 60/95 kV Rated frequency: 60 HzRated current of the main busbars: 1600/1250 ARated short-time withstand current: 40/31.5 kA1sPeak withstand current: 104/82 kAInternal arc withstand current: 40/31.5 kAArc fault duration: 1 secCopper busbar system: BareExternal protection degree: IP41Internal protection degree: IP2X Painting: RAL 6029Design ambient temperature: -5°C /+40°C

AIR INSULATED SWITCHGEAR

Rated voltage: 7.2 kVService voltage: 6.0 kVRated power frequency withstand voltage: 20 kV Impulse withstand voltage: 60 kVRated frequency: 50 HzRated current of the main busbars: 1250 ARated short-time withstand current: 20 kA1sPeak withstand current: 50 kAInternal arc withstand current: 20 kAArc fault duration: 1 secCopper busbar system: BareExternal protection degree: IP4XInternal protection degree: IP2X Painting: RAL 7035Design ambient temperature: -5°C /+40°C

GAS INSULATED SWITCHGEAR

Bus bar arrangement: Single bus barService voltage: 35 kV Rated voltage: 36 kVImpulse withstand voltage: 170 kVRated power frequency withstand voltage: 70 kV Rated frequency: 50 HzRated current of the main busbars: 1250 ARated short-time withstand current: 25 kA1sPeak withstand current: 63 kAInternal arc withstand current AFLR: 25 kAArc fault duration: 1 secHV compartments protection degree: IP65LV compartments protection degree: IP4XPainting: RAL 7035Design ambient temperature: -5°C / +40°C

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