Bus sectionalizer panel type V
with circuit-breaker
General
- Three-poleprimary enclosure, metal-enclosed
- Weldedswitchgear vessel without seals, made of stain- less steel, with welded-in bushings for electrical connec- tions and mechanical components
- Insulatinggas SF6 (fluorinated greenhouse gas)
- Maintenance-free componentsunder normal ambient conditions according to IEC 62271-1 and VDE 0671-1
- Three-position switch-disconnector withload-break function and make-proof earthing function
- Vacuumcircuit-breaker
- Cable connection with outside-coneplug-in system
– In ring-main and circuit-breaker feeders with bolted contact (M16)
– In transformer feeders with plug-in contact or optionally with bolted contact (M16)
- Wall-standing or free-standing arrangement
- Pressurerelief downwards, optionally to the rear or upwards via pressure absorber systems.
Interlocks
- According toIEC 62271-200 and VDE 0671-200
- Logicalmechanical interlocks prevent maloperation
- Logicalmechanical interlocks and the constructive features of the three-position switches prevent mal- operation as well as access to the cable connection of the feeders and HV HRC fuses under voltage
- Impermissibleand undesired operations can be prevent- ed by means of locking devices provided at the switching devices
- A detailed description of allinterlocking options is available on page 51.
Insulating system
- Switchgearvessel filled with SF6 gas
- Features ofSF6 gas:
– Non-toxic
– Odorless and colorless
– Non-inflammable
– Chemically neutral
– Heavier than air
– Electronegative (high-quality insulator)
– Global Warming Potential GWP = 22,800
- Pressure of SF6gas in the switchgear vessel (absolute values at 20 °C):
– Rated filling level: 150 kPa
– Design pressure: 180 kPa
– Design temperature of the SF6 gas: 80 °C
– Operating pressure of bursting disc: ≥ 300 kPa
– Bursting pressure: ≥ 550 kPa
– Gas leakage rate: < 0.1 % per year.
Modular design
- Individualpanels and panel blocks can be lined up and extended at will – without gas work on site
- Low-voltage compartment available in 4 overallheights, wiring to the panel via plug connectors.
Panel design
- Factory-assembled, type-tested
- Metal-enclosed, with metallic partitions1)
- Hermetically tight, welded switchgear vesselmade of stainless steel
- Maintenance-free
- Degree ofprotection
– IP 65 for all high-voltage parts of the primary circuit in the gas-insulated panels
– IP 2X for the switchgear enclosure
- Vacuum circuit-breaker with three-position disconnectorfor disconnecting and earthing
- Three-position switch-disconnector
- Cable connection with outside-coneplug-in system according to DIN EN 50181
- Wall-standing arrangement, optionally free-standingarrangement
- Installation andpossible later extension of existing panels without gas work
- Replacement of instrument transformers without gas
work, as they are located outside the gas compartments
- Enclosuremade of sendzimir-galvanized sheet steel,
front cover powder-coated in color “light basic” (SN 700)
- Low-voltage compartmentremovable, plug-in bus wires
- Lateral,metallic wiring ducts for control cables.
Instrument transformers
- Current transformersnot subjected to dielectric stress
- Easyreplacement of current transformers designed as ring-core transformers
- Metal-coated, plug-in voltage transformers.
Vacuum circuit-breaker
- Maintenance-freeunder normal ambient conditions according to IEC 62271-1 and VDE 0671-1
- Norelubrication or readjustment
- Upto 10,000 operating cycles
- Vacuum-tight forlife.
Secondary systems
- Customaryprotection, measuring and control equipment
- Option:Numerical multifunction protection relay with integrated protection, control, communication, operat- ing and monitoring functions
- Canbe integrated in process control systems.
On request, 8DJH switchgear can be provided with an outdoor enclosure with the following features:
- For outdoor applications on companygrounds
- Enclosure attached to standardindoor panels
- Enclosurewith three different heights, for 1200 mm
switchgear height (optionally with low-voltage compart- ment as a 200 mm, 400 mm or 600 mm high version), or 1400 mm switchgear height (optionally with low-voltage compartment as a 200 mm or 400 mm high version)
- Enclosure with four different widths for freely configu-rable, non-extendable switchgear rows up to a switch- gear width of 2000 mm (for dimensions, see page 82)
- Internal arc classificationIAC AFL or FLR to 21 kA / 1 s according to IEC 62271-200
- Degreeof protection IP 54.
