Page 336 - CITS - Electrician - Trade Practical
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ELECTRICIAN - CITS
3 Locate the fixed main contact and movable main contacts.
4 Check the continuity of the contacts.
5 Locate the tripping coil terminals.
6 Remove the arcing chamber unit and test the arc chutes and diverters.
7 Locate the manual tripping lever to trip manually.
8 Connect the ACB to the main supply and switch ON.
9 Check the condition of indicating and tripping lamps.
10 Charge the breaker manually by operating handle.
11 Check the engaged main contact and confirm by checking its continuity.
12 Press the manual tripping switch and confirm its disengagement of the contacts.
13 Charge again the breaker and confirm the engagement of the main contacts.
14 Switch ‘OFF’ the AC mains, the arcing chamber and close the removed covers.
15 Submit the reports to your Instructor and get it approved.
Table 2
Sl. No Parts no Name of the part Function
1
2
3
4
5
6
7
8
9
10
11
319
CITS : Power - Electrician & Wireman - Exercise 114
