RMU

Ring Main Unit - Product Presentation

Division : S2 – MV Switchgear

Category : General

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CG LUCY SWITCHGEAR

CG Lucy Switchgear Ltd is a joint venture company of Crompton Greaves Ltd., India and W.Lucy & Co. Ltd., U.K. Established in 1994, the factory is situated at Nasik, India. With 30000 sq.feet of area, the facility has modern automated equipments with all major testing facilities, to guarantee quality products. CG Lucy is a ISO 9001:2000 Certified company. Division : S2 – MV Switchgear

Category : General

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New Factory

CG Lucy is the largest manufacturer of SF6 gas insulated Vacuum RMU in India. With near total population in many metro’s, our RMU’s make the metro’s of India to glow with reliable power. Oil RMU’s is another most sought product not only in India, but also in the South Asian countries, especially in Malaysia. This is an economical & highly reliable product which uses HT Fuse links immersed in the Oil chamber. Division : S2 – MV Switchgear

Category : General

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Ring Network

Division : S2 – MV Switchgear

Category : General

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Distribution Network MAIN SUBSTATION

RMU

RMU

RMU

COMPACT SUBSTATION FEEDER PILLAR

Division : S2 – MV Switchgear

Category : General

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‘SABRE’ RING MAIN UNITS (RMU) - SF6 Encapsulated Vacuum RMU

Division : S2 – MV Switchgear

Category : General

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‘SABRE’ Designation Code

Product Description

ƒ ƒ ƒ

VRN VRE VCE

Vacuum Ring Main Unit - Non Extensible Vacuum Ring Main Unit – Extensible Vacuum Circuit Breaker - Extensible

ƒ ƒ

SSE DSE

Single Switch – Extensible Double Switch – Extensible

Division : S2 – MV Switchgear

Category : General

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‘SABRE’ Range ƒ

SABRE VRE/ VRN: - 2 Ring Switches + 1 Circuit Breaker

ƒ

SABRE SSE / DSE - 1 / 2 Ring Switches

ƒ

SABRE VCE - 1 Circuit Breaker

Division : S2 – MV Switchgear

Category : General

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SABRE : VRN

Division : S2 – MV Switchgear

Category : General

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SABRE : VRE

Division : S2 – MV Switchgear

Category : General

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SABRE : VCE

Division : S2 – MV Switchgear

Category : General

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SABRE : SSE

Division : S2 – MV Switchgear

Category : General

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Single Line Diagram - VRE

Vacuum Circuit Breaker

Off Load Switch

Ring Switch

Ring Switch

Integral cable testing Facility

Division : S2 – MV Switchgear

Integral cable testing Facility

Category : General

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Extensibility – 6 way RMU (VRE+VRE)

Tr. Feeder

Tr. Feeder

Extension for Future

Extension for Future

Loop IN

Loop OUT Loop OUT

Division : S2 – MV Switchgear

Loop OUT

Category : General

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Extensibility – 4 way RMU (VRE+VCE)

Tr. Feeder

Tr. Feeder

Extension for Future

Extension for Future

Loop IN

Loop OUT

Division : S2 – MV Switchgear

Category : General

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Multi Circuit Range (MCR) RMU - SF6 Encapsulated Vacuum RMU

Division : S2 – MV Switchgear

Category : General

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MULTI CIRCUIT RANGE (MCR) MCR is a versatile SF6 insulated Vacuum Ring Main Unit – a combination of vacuum circuit breaker unit and fault-make load break switches (Ring switch / Isolators). With front cable terminations, the system is highly compact and well protected with Padlock, interlock & earthing facilities.

Division : S2 – MV Switchgear

Category : General

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MCR – 5 Way Under Assembly

Division : S2 – MV Switchgear

Category : General

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MCR – Range & Extensibility

Division : S2 – MV Switchgear

Category : General

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Technical Data – SABRE & MCR Variants Rated Voltage kV Rated Current A

Symmetrical Breaking Capacity kA / sec Making Current kAp Impulse Withstand kVp

SABRE - VRE VRE - 6A 12 / 15.5

SABRE 24

MCR 12

630

630 for Ring Switch & 400 for CB

630

21 / 3

16 / 3

21 / 3

52.5

40

52.5

75 / 110 (optional)

125

Min Gas Pressure Bar Filling Pressure Bar Index of protection Cable termination Incoming Tee off Cable Tests Dimensions Width Depth Height Weight kg

0 0.4

0.5

0 0.4 IP 54

Side Bottom Rear Bottom Bottom

Front Bottom Front Bottom Top

935 1078 1470 450

1300 900 1400 540 (3way)

IP 54 Side Bottom Rear Bottom Bottom Bottom 935 1030 1333 410

Division : S2 – MV Switchgear

948 1085 1750 350

75 / 95 (optional)

Category : General

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Applicable Standards RMU’s has been fully certified in accordance with IEC standards: - IEC 60129 - IEC 60056 - IEC 60265-1 - IEC 60298 - IEC 60694 - IEC 60526 & IEC 60529

Division : S2 – MV Switchgear

Category : General

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Features ƒ

Low gas operating pressure - 0.5 Bar

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Pressure indicator and SF6 recharging facility.

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Gas pressure relief diaphragm for internal arcing.

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Low Temperature rise of Busbars , hence no derating of switches at ambient of 45 to 50 Deg C.

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CB Earthing through Vacuum Interrupters hence full rating for earthing circuit.

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Operational Safety - We have tested our RMU with ZERO gas pressure for satisfactory electrical performance.

Division : S2 – MV Switchgear

Category : General

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Features ƒ

Stainless Steel Tank: SS is the most preferred material for Gas Insulated System because of its high resistance to corrosive and humid atmosphere.

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Extensibility: RMU is extensible on both sides. This feature give greater flexibility to Utility’s planning department to plan future extensions.

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Outdoor Application: RMU is suitable for outdoor application. It is IP54 tested. This prevents construction of extra room to house the switchgear.

ƒ

Gas leakage - For a SF6 Insulated VCB type RMU, the chances of Vacuum bottle leaking and SF6 gas leakage from chamber, simultaneously are very rare. Hence in VCB type RMU provides a double protection scheme.

Division : S2 – MV Switchgear

Category : General

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Features – Vacuum Dielectric Medium ƒ

Ionization of Gas: Since fault is broken in Vacuum Interrupter, the SF6 gas is not polluted.

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Constant dielectric: There is no gas decomposition products in vacuum and hermetically sealed vacuum interrupter keep out all environmental effects.

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Electrical life: Vacuum interrupters, have longer electrical life, duties exceeding IEC limits / requirements.

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High total current switched: Since the contact piece erosion is small, rated normal current can be interrupted more than 20000 times and rated shortcircuit breaking current on average a hundred times.

Division : S2 – MV Switchgear

Category : General

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Features - SF6 Leak Prevention ƒ Stainless Tank – Robotic Welding ƒ Tank Helium Leak Tested ƒ SF6 Filling at 0.1 torr ƒ Quarantine for 10 days ƒ Low SF6 Pressure ƒ Pressure Indication ƒ Facility for SF6 Recharging on site

Division : S2 – MV Switchgear

Category : General

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Transformer Protection

Division : S2 – MV Switchgear

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Time limit fuses

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Electronic Over current and earth fault relays

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Auxiliary powered or self powered Relays

Category : General

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Transformer Protection

ƒ

Division : S2 – MV Switchgear

Category : General

Current Transformers with Relay for transformer protection

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Cable Testing Step-1 Step-2

Step-3 Test Bushing

Division : S2 – MV Switchgear

Category : General

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SABRE Cable Boxes

ƒ Bottom or Top Entry ƒ Side & Rear Termination for operator Safety ƒ Full terminal access ƒ Interlocked cable test facility

Division : S2 – MV Switchgear

Category : General

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Facia Details

ƒ ƒ ƒ

Division : S2 – MV Switchgear

All Live parts fully covered All positions visible from front Padlocking in all position – ON / OFF / EARTH

Category : General

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GA - Overview Bursting Disk Circuit Breaker operating Mechanism

Ring Bushing

Gas Pressure Gauge

Division : S2 – MV Switchgear

Category : General

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Ring Switch Mechanism

Positively driven Indicators (3 positions)

Indication Operating Lever

Earth/Service operation interlock

Division : S2 – MV Switchgear

Category : General

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Features: Mechanism

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Highly reliable time proven mechanism.

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Common frame for both switches ensure accurate center alignment.

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Use of stainless steel and brass bushings eliminates effects of corrosion.

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5mm thick stainless steel for Service/Earth selectors and interlocks to avoid possible damage due to mis-operations.

Division : S2 – MV Switchgear

Category : General

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Ring Switch

Interswitch barrier

Insulated Drive Disc Support Disc

Key Advantages: ƒ

Reduced number of parts

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Self aligning contacts

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Compact design

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Rear Support Disc allowing automatic self alignment of rear bearing Division : S2 – MV Switchgear

Category : General

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Ring Switch & Circuit Breaker Module

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Fixed contacts for Circuit Breaker selector

Division : S2 – MV Switchgear

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CG make Vacuum interrupters

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High Fault switching capability

Category : General

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Contact Arrangements

Hot Brass Stampings

A

B

C

A - Earth Contact B - Switch Blade Pivot C - Line Contact

Benefits over casting: ƒ ƒ

Better durability Better electrical and mechanical properties

Division : S2 – MV Switchgear

Category : General

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Optional Accessories

Division : S2 – MV Switchgear

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Live line indication

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Earth Fault Indicators

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Emergency push button

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Key interlocks

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Motorization

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Remote control & monitoring

Category : General

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SAFETY – Never Compromised

Insulated Drive Plate

FE Stress Analysis We are committed towards providing the best safety features & our products undergo rigorous testing for its reliability. Division : S2 – MV Switchgear

Category : General

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Robotic Welding

Division : S2 – MV Switchgear

Category : General

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Module Building

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Assembled in Pressurized Clean Room

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Controlled entry for personnel and material

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Only trained operators are used as per training matrix

Division : S2 – MV Switchgear

Category : General

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Leak Monitoring

Chamber test Division : S2 – MV Switchgear

Category : General

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Leak Monitoring – Sniff test

•

Division : S2 – MV Switchgear

Category : General

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Electrical Testing

High Voltage Test Division : S2 – MV Switchgear

Category : General

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TRIDENT OIL RING MAIN UNIT

Division : S2 – MV Switchgear

Category : General

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‘TRIDENT’ Designation Code

Product Description

ƒ FRMU

Fused Ring Main Unit - Non Extensible

ƒ FRMUE

Fused Ring Main Unit – Extensible

ƒ EFS

Extensible Fuse Switch

ƒ NEFS

Non Extensible Fuse Switch

ƒ EOS

Extensible Oil Switch

Division : S2 – MV Switchgear

Category : General

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‘TRIDENT’ Range ƒ TRIDENT FRMUE/ FRMU:

- 2 Ring Switches + 1 Fuse Switch unit ƒ TRIDENT EFS / NEFS - 1 Fuse Switch unit ƒ TRIDENT EOS - 1 Switch unit

Division : S2 – MV Switchgear

Category : General

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FRMU Oil Ring Main Unit ƒ Fused tee-off oil switch, with 2 ring oil switches in a separate chamber ƒ Transformer mounting or free standing ƒ Tripping facility manually, fuse striker pin or remote electrical signal

Division : S2 – MV Switchgear

Category : General

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Technical Parameters

TRIDENT Variants Rated Voltage kV Rated Current A Breaking Capacity Main / Earth kA Making Capacity Main / Earth kAp Impulse Withstand kVp Index of protection

Division : S2 – MV Switchgear

FRMU / NEFS / EFS / EOS / DEOS Ring Switch Fuse Switch 12 / 15.5 630 400 0.63 20 55 / 55 50 / 7.8 110 110 IP 54

Category : General

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Extensibility – FRMUE & EFS

RMU: Two incoming & Three Outgoing

Division : S2 – MV Switchgear

Category : General

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Thank you

Division : S2 – MV Switchgear

Category : General

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