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TRANSCRIPT
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HV/MV SWITCHGEAR
Prod
ucts
Vol
. 03
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HV/MV SWITCHGEARWHY CHOOSE SKEMA - ---------------------------------- 04GENERAL FEATURES - ------------------------------------- 06AIR INSULATED SWITCHGEAR - ---------------- 08GAS INSULATED SWITCHGEAR - -------------- 09HV/MV CASE STUDIES ---------------------------------- 10
CONTENTS
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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
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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
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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
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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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