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18-2807-51

PAGE 6

METAL-CLAD SWITCHGEAR

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Fig. 5-latch Check Switch Adjustment

RACKING LEAD SCREW

RACKING RELEASE LEVER

PADLOCK LOCKOUT

Fig. 6-Racking Mechanism

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Summary of Contents for 5HK75

Page 1: ...IB 2807 51 C METAL CLAD SWITCHGEAR INSTRUCTIONS 5 KV POWER CIRCUIT BREAKERS TYPE 5HK75 5HK150 5HK250 AND 5HK350 I I T E CIRCUIT BREAKER COMPANY w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 2: ... CLAD SWITCHGEAR Fig 1 View Showing Arc Chute and Contact Structure Fig 2 Front View of Control Panel X O l N 0 w 0 f 0 I L 00 I N 0 0 1 lnW N 0 0 f wo I OCL f 0 IW CL 0 u w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 3: ...osing springs snap into charge position Insert BOTH tangs of spring retainer bracket 7 into holes of closing spring tubes 2 Pull manual close lever 4 to discharge closing springs onto tangs of spring retainer bracket 7 Engage manual charge handle 8 with charging lever 3 then pump to slow close breaker contacts Check contact pressure as in Adjustment Section then push manual trip button 6 to trip b...

Page 4: ...51 PAGE 4 METAL CLAD SWITCHGEAR I 2 Fig 3 Method of Racking Circuit Breaker Fig 4 Contact Pressure and Bridge Pivot Pressure N m 0 f 0 r _ w 0 N ro 0 D 0 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 5: ...reakage Closely observe that there is no erosion or pitting of the METAL CLAD SWITCHGEAR IB 2807 51 PAGE 5 rear horn spacer bushings warped or cracked jump gap plates and eroded disconnect pivot bolt and bushings Also check any erosion or distortion to front arc horn Remove dirt or grease from contacts with a cloth saturated with an oil free solvent Discoloration of main contacts does not indicate...

Page 6: ... 3 5 METAL CLAD SWITCHGEAR I I __ I I Fig 5 latch Check Switch Adjustment RACKING LEAD SCREW 4 3 RACKING RELEASE LEVER PADLOCK LOCKOUT Fig 6 Racking Mechanism w 0 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Page 7: ... closed make adjustments by regulating the length of connecting rod 3 for approxi METAL CLAD SWITCHGEAR 18 2807 51 PAGE 7 mately 1 8 inch minimum clearance at A between trip link 5 and blocking lever 4 with racking lock lever 2 held against racking lock bracket 1 at B ELECTRICAL OPERATING SEQUENCE Please refer to the specific schematic diagrams and other operational information furnished with your...

Page 8: ...ntatives are experienced and are competent to make correct applications as well as give complete information and prices We suggest you consult the representative nearest you I I T E CIRCUIT BREAKER COMPANY SWITCHGEAR DIVISION 1900 HAMILTON STREET PHILADELPHIA PENNSYLVANIA Revised 6 63 Printed in U S A w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

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