Tips For Installation & maintenance of Type FQ MCC

Cabling MCC

In MCC type TQ, busbars are located at the top, and cable entry is possible from the bottom. For top cable entry, the busbars are shifted to the bottom.

While routing the cable in the cable alley, adequate bending radii(R>=12 x overall diameter of cables) should be considered. This will prevent cables from exerting pressure on the termination. A wide cable alley is provided for easy bending and termination of cables.

Ensure proper clamping of cables on the glands and cable clamps to avoid weight of cables acting directly on the termination.

Block all unused holes.

Replace all shrouds, if they were removed for cable termination.

Extension links are provided to facilitate higher size cable termination. These links should be properly fastened to the terminals after cable termination.

Cable area available (in mm) Width Depth

Single front bottom entry 225 483

Single front top entry with aux. bus 200 360

Double front bottom entry 225 387.5

Double front top entry with aux. bus 200 260

Double front top entry with aux. bus 200 350

Single unit panel bottom 500 350

entry 225 483

Wiring

1. Always use copper wires/cables for control purposes.

2. Inter-unit wiring within the same panel is through the wireway on the right hand side.

3. Intersection wiring is through the horizontal wireway at the top along. With the auxiliary bus.

4. In the single front version, rear access to the vertical wireway is available if the section is installed at least one metre away from the wall.

5. For double front sections, inter-front wiring is through the shield in the middle of the section.

6. Refer to the relevant scheme diagrams and terminal charts for inter-connections.

7. Special connectors are provided in cable alley, auxiliary bus zone for communication cables, wherever required. These cables are run in front vertical pillar, providing a shield from other cables in cable alley.

8. Shielding on communication cables should not be earthed in the MCC.