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Instruction Booklet 

IB182047EN

Effective February 2018

Contents

Description Page

1 Introduction   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 2
2  AFL conversion system and components   .  .  .  .  . 3
3  Typical installation performed by qualified  

personnel  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 5

4  AFL conversion system control unit   .  .  .  .  .  .  .  .  . 7
5 Maintenance   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 8
6  Parts List  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 8 
  Appendix A   .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 9 

Arc flash limiter (AFL) 

conversion system

Summary of Contents for AFL

Page 1: ...ents Description Page 1 Introduction 2 2 AFL conversion system and components 3 3 Typical installation performed by qualified personnel 5 4 AFL conversion system control unit 7 5 Maintenance 8 6 Parts List 8 Appendix A 9 Arc flash limiter AFL conversion system ...

Page 2: ...ost of capital loss of power additional expenses in the use of existing power facilities or claims against the purchaser or user by its customers resulting from the use of the information and descriptions contained herein 1 1 2 Safety precautions All safety codes safety standards and or regulations must be strictly observed in the operation and maintenance of this system m WARNING THE WARNINGS AND...

Page 3: ...n and a set of current sensors are added to the secondary side of the transformer to feed the ARMS feature on the breaker trip unit In some cases the original discon nect switch is retained The control unit also includes a breaker control switch and breaker status LEDs for breaker control The 520MCV trip unit with Maintenance Mode in the breaker inter faces with the ARMS switch mounted in the cont...

Page 4: ...ll introduce an increased risk of destructive high voltage transients into the system Transient voltages have been proven to cause transformer failures during switching To mitigate this risk it is highly recommended Eaton Power Systems Engineering PSE conduct a switching transient study to determine the optimal surge protection surge arrester RC snubber and or damping resistor needed to mitigate s...

Page 5: ... joints and connections and insure they meet the standards identified in NEC Table 490 24 Qualified field service technicians will install the disconnect switch to breaker connections These will usually be copper bus work typically 1 4 x 2 or 1 4 x 3 6 35 x 50 8 mm or 6 35 x 76 2 mm In some cases the connections will be cable instead of copper bus work depending on the rating of the breaker Refer ...

Page 6: ...th the AFL conversion system it was designed based on the results of the optional study of the customer s existing original electrical system performed by Eaton PSE Figure 7 Typical custom snubber Qualified field service technicians will install the control unit either on the enclosure door or mounted remotely based on the customer s preference If a remotely mounted control unit is selected the co...

Page 7: ...s 50 51 protection 2 Breaker control switch The breaker control switch is used to open and close the breaker 3 Red indicating LED pushbutton The red indicating LED pushbutton indicates the breaker is closed 4 White indicating LED pushbutton The white indicating LED pushbutton indicates the springs of the breaker are charged 5 Green indicating LED pushbutton The green indicating LED pushbutton indi...

Page 8: ... 3 Current sensor 3 AFL control unit 120 Vac NEMA 1 1 Copper phase A load 1 Copper phase B load 1 Copper phase C load 1 Copper phase A line 1 Copper phase B line 1 Copper phase C line 1 Phase barrier 2 Nameplate Eaton AFL Assembly 1 Nameplate AFL Ratings 1 Table 2 Torque values for general mounting and screw size conversion Decimal size in Standard size Torque in lbs Torque ft lbs 112 4 40 10 0 8 ...

Page 9: ...T OVERLAP A SPECIFIED DISTANCE MEASURED ALONG THE PRE INSULATION STARTING FROM THE POINT WHERE THE PRE INSULATION ENDS AND THE EXPOSED CONDUCTOR BEGINS METHODS GENERAL 1 ELONGATE INSULATING TAPE 10 TO 25 PERCENT DURING APPLICATION TO INSURE A SMOOTH TIGHT FIT ON PADS ELONGATE CORNERS ONLY 2 SHOULD A TAPE ROLL EXPIRE START THE NEW ROLL BY OVERLAPPING THE PREVIOUS END BY 5 TURN T JOINTS WITH HARDWAR...

Page 10: ... 030 THICK PAD 2 STARTING 50 INCH FROM CENTER AND EXTENDING OVER PREINSULATION AT LEAST 1 0 INCH WITH 1 1 4 LAPS APPLY 3 00 X 030 THICK PAD 3 STARTING 1 00 FROM PAD 2 AT CENTER AND EXTENDING 1 00 IN OVER PREINSULATION PER FIG 8 6 APPLY ONE LAYER OF INSULATING TAPE 1 00X 030 USING 2 3 LAP AND EXTENDING 0 50 INCH MINIMUM BEYOND THE PADS ON THE PREINSULATION PER FIG 9 7 APPLY A SECOND LAYER OF INSULA...

Page 11: ...ated pothead bushing Pothead ground lead must be carried through the Zero Sequence current transformer and solidly grounded on the load side of the ct as shown Use 6 wire with 600 V insulation Power cables Conduit when used Cable connections to switchgear terminals when used with Insulated Pothead Conduit must be terminated and solidly grounded on the load side of the current transformer Zero Sequ...

Page 12: ...between Eaton and the purchaser THERE ARE NO UNDERSTANDINGS AGREEMENTS WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT BETWEEN THE PARTIES ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON THE CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETW...

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