Bus bar tracking system( BBT) SYSTEM:

SPECIFICATION OF BBT SYSTEM:

1.             Standard                                                               :               IEC 439-1  & 2, KEMA certificate 

2.             Housing                                                                 :               2-piece aluminium (no duration till 55deg. C)

3.             Maximum ambient temperature                      :               40 Deg.C

4.             Degree of protection                                           :               IP54

5.             Colour                                                                    :               Approved colour

6.             Rated insulation voltage                                    :               Maximum 600 V.A.C.

7.             Frequency.                                                            :               50 Hz.

8.             Rated current at 40 deg.C                                  :               As per schedule  

9.             Minimum rated surge

capacity (KA)(t-0.1s)                                           :               To be quoted by the bidder.

10.          Inherent short circuit

                capacity (KA) (t-0.Is)                                            :               To be quoted by the bidder.

11.          Rated short time with-stand

                current(KA) (t= 1 sec)                                          :               To be quoted by the bidder.

Insulation                                                               :              Mylar from Du-pont or epoxy insulated-Class B 130deg.C

12.       Busbar materials                                                    :               Aluminium and all conductors tinned              and insulated      

13.          Busbar cross section                                          :               To be mentioned by the bidder

14.          Special features                                                  :               Single bolt clamping.

15.       Others                                                        :              Drawings to be submitted for the proposed        BBT  system   with  detailed  information,  dimension,  list of materials as per site requirement.

Tap-off units must be designed in such a way so that the tap-off units can be fitted or removed while the system i.e. the main busbar trunking is energized.

Circuit breakers in the Tap-off units shall be of quick make, quick break, trip-free indicating type having adjustable thermal over-current and adjustable instantaneous electro-magnetic short circuit release having the rated interrupting capacity.

All the components of the BBT i.e. main busbar length, reduction unit, fire barrier, fixing bracket, tap-off boxes with circuit breakers, elbows, tee, feed unit, end cover, expansion unit, etc. shall be from the same manufacturer. All the joint & contact surface shall be silver plated.

The components of BBT shall be appropriately as follows but the bidder must inspect the site and supply everything to complete total system.

BBT-1 :

1600A Distribution Board Connection Unit                    :               1 No.

1600A Bends                                                                       :               2 Nos.

1600A Transformer connection unit                                                :               1 No.

1600A Straight length                                                         :               5.00 meter (approx.)

Fire Barrier                                                                            :               1 Lot.

Hanger                                                                                  :               1 Lot.

BBT-2 :

1600A Distribution Board Connection Unit                    :               1 No.

1600A Bends                                                                       :               4 Nos.

1600A Straight length                                                         :           40.00 meter ( approx.)

Fire Barrier                                                                            :               1 Lot.

Hanger/floor support                                                          :               1 Lot.

Tap-off boxes with  200A TP (50KA) MCCB                  :           7 Nos.

Tap-off boxes with  160A TP (50KA) MCCB                  :           1 No.

End Cap                                                                                :          1 No.

BBT-3 :

600A Distribution Board Connection Unit                      :               1 No.

600A Bends                                                                          :               4 Nos.

600A Straight length                                                           :           43.60 meter (approx.)

Fire Barrier                                                                            :               1 Lot.

Hanger/floor support                                                          :               1 Lot.

Tap-off boxes with  160A TP (50KA) MCCB                  :            1 No.

Tap-off boxes with  63A TP (50KA) MCCB                    :            7 Nos.

500A End Cap                                                                     :           1 No.

INSTALLATION:

The BBT system shall be fixed on floor ceiling and walls with all necessary, cutting and breaking, cleaning and mending the same including cement/sand plastering and painting clamps, nuts, bolts as per the installation drawing of the manufacturer after getting approval from the Owner / Consultants. The contractor shall supply all materials required for complete installation of the BBT system.