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LV KT - 400 F/D Low Voltage MCC Panel

LVKT-400 F/ D system is a standard product for Low Voltage switchgear and controlgear used both in utility and industries.
The uniform and modular design makes them suitable for various applications such as:
- Withdrawable/Fixed incoming feeder with a circuit breaker up to 4000A
- Withdrawable/Fixed sub-feeder with fused load break switches up to 630A
- Withdrawable/Fixed motor control starters with either Moulded Case Circuit Breaker (MCCB) or fused load break switch as main circuit interrupter, up to 250 kW.

Main features:
- Separate and isolated bus bar compartment to increase safety of operation.
- Separate and isolated cable compartment.
- Uniform drawer ease any line-up combinations design.
- Choice of different type of main circuit interrupter (MCCB or fused load-break switch).
- Uniform cubicle design for LV distribution/MCC and Withdrawable/Fixed applications.

Various types of LV Panels

Type D-1 Withdrawable incoming feeder
- Ratings: up to 4000A, 65kA
- Air Circuit Breaker as main current switching
- Choice of motorized/manual operating mechanism
- Choice of shunt trip/under voltage trip protection
- Mechanical interlock to prevent insertion or withdrawable
C.B while it is closed
- Disconnect/test/Service position indication
- Possibility of testing operation mechanism of CB in test position with door closed

Type D2-1 Withdrawable motor starter with MCCB
- Ratings: up to 250kW, 65kA
- Moulded Case Circuit Breaker (MCCB) as main current switching
- Various types of starters (DOL, Star/Delta, reversing etc.)

- Choice of overload, over current, under voltage, earth leakage etc., protective function.
- Mechanical interlock to prevent insertion or withdrawing the starter while main switch is in closed position.
- Position indication for test/service
- Possibility of testing the functions of starter in test position (power terminals disconnected)
Type D2-2: Withdrawable small motor starter similar as type D2-2 but separate rotary load break switch and HRC fuse.
Type D3-1 & D3-2: similar as D2-1 and D2-2 respectively but for outgoing feeders. (sub-feeders) up to 2500A
Type F1: Fixed incoming feeder up to 4000A, 56 kA
Type F2-1: Fixed motor starter up to 630A with MCCB as main switch.
Type F2-1: Fixed motor starter up to 630A with load-break switch
Type F3-1& F3-2: Fixed outgoing feeders (sub-feeders) up to 2500A

General Technical specification:
- Rated Voltage: 660 VAC, 50 Hz ( 40-60 Hz )
- Rated operating current : 4000A At 40
- Rated short circuit current: 65 KA

Bus bar specification:
- Horizontal bus bar : up to 4000 A
- Vertical bus bar : up to 800A for D type
- Vertical bus bar : up to 2500A for F type
Control Voltage rating : 24 VDC, 110 VDC, 220 VAC. (others on request).
Degree of protection: IP42 (IP54 on request )

Applicable standards:
- General : VDE 0660 part 500 and IEC439
- Degree of protection: IEC 529
- Creepage distance: VDE 0110, class C for
- Clearances in air: 1000 V, 40 to 60 Hz

Panel & Drawer Enclosures:
The panels are constructed out of steel sheet of sizes 1.5, 2 & 2.5mm, bolted design, free
standing and self-supporting type. They are compartmented for incoming feeder, main bus
bar section, outgoing cable section and starter/feeder section. They have a standard
Height of 2300mm (with base frame) and 400/600/800mm width and 600/800mm depth.
Each panel can accommodate maximum up to 10 drawer unit of 4M size (1 module as spare
at bottom)
The drawer enclosure are made of galvanized sheet steel and the drawer units are sized as
4M, 6M, 8M, 10M, 12M with each M equal to 50mm

MCC (D.O.L) Rating tactor rating (KW) Drawer Unit Size (M) Up to 4 4 5.5 4 7.5 4 11 4 15 4 18.5 4 22 4 30 6/8* 37 6/8* 45 6/8* 55 6/8* 75 6/8* 90 8 110 10/12* 132 12 160 12 200 16 250 16

Distribution feeders Rating (switch rating) (A) Drawer Unit Size (M) 20 4 25 4 32 4 40 4 60 4 80 4 125 4/6* 200 8 250 10 275 12 315 12 350 12 400 12/16* Basic modules: 4M, 6M, 8M, 10M, 12M, 16M (M=50mm)

Surface treatment:
The metal part are protected from corrosion by process of degreasing and phosphating and painting. The paints are epoxy resin and applies electrostatically and baked (powder coating). The final thickness of coat is up to 70 and is resistant to diluted inorganic acids and alkalin as well as fuel or oil. If is not affected by most of industrial dusts in harsh environment. The color is usually RAL7032 or 7035, other colors at request.

Horizontal bus bar Compartment:

The main bus bars are mounted horizontally. They are installed in a separate and isolated compartment at the top of panel with separate door which segregate the bus bar from equipment installed in lower space.

Up to 3 bus bars for a phase and a separate bus bar for control
supply is installed in this compartment.

Rating : up to 4000 A

Vertical bus bar:

Vertical bus bar are drapped from main bus bar and are installed in galvanized sheet-steel channels inside cubicle. Openings are available in each, drawer space by automatic safety shutters. These shutters are operated by drawer unit function.

Rating : up to 2500 A

Safety features & case of operation:
The design of panel affords maximum safety to operators and personnel. The safety feature of panels are as follows:
- Compartment design for bus bar compartment, switchgear compartment and cable compartment.
- Isolated and segregated bus bar compartment to prevent arcing progress.
- Each drawer unit has its own compartment with separate door which can be closed separately allowing to work on a unit while other units are functioning.
- Ventilations and pressure relief channel. The mechanical construction of panel is such that it allows natural air circulation through drawer module, vertical bus bar channel, main bus bar compartment and cable compartment to cable channel. The channel work as pressuresafety system in case of internal arcing.
- Spacious cable compartment for ease of cabling work and wire termination.
- Safety shutter in front of vertical bus bar allows working on a drawer unit while panel is live.
- Main switch interlocked with door to prevent door opening when it is in closed position.
- Each drawer unit is standard product which allows for similar unit exchange. Ease of operation and maintenance.