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030-000223 Rev F 

1009-03F 

October 10, 2012 

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Westell 

 

Fuse Panel 

Technical Practice

 

 

NPTFD1009 

4 POSITION TFD (TLS) 

  

 
 

 

FEATURES

 

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  Compatible with -24 or -48 Vdc battery voltages (polarity insensitive). 

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  4 isolated TLS fuse positions, TFD style holder, 125 Amps each (500 Amps per panel). 

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  TFD fuse holder accepts TLS Fuses (up to 125 Amps) or TPS Fuses (up to 70 Amps). 

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  Normal and Fuse Alarm LEDs for each fuse position indicates power or fuse failure. 

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  “Form C” relay contacts to extend alarm conditions for each fuse position. 

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  1/4” stud input and output blocks (1/4” studs on 5/8” centers). 

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  Brackets allow for mounting in 19” or 23” racks (1 RU). 

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  NEBS level 3 verified, with zone 4 earthquake. 

 

Summary of Contents for NPTFD1009

Page 1: ...ive 4 isolated TLS fuse positions TFD style holder 125 Amps each 500 Amps per panel TFD fuse holder accepts TLS Fuses up to 125 Amps or TPS Fuses up to 70 Amps Normal and Fuse Alarm LEDs for each fuse...

Page 2: ...is present a red Fuse Alarm LED will illuminate As well the green Normal Operation LED 9 will extinguish to signal a fuse alarm or input power failure and the appropriate relay contacts will change st...

Page 3: ...l be lit provided there is no power failure Figure 1 4 1 shows the alarm LED layout 3 4 There is one set of dry Form C contacts to extend alarms for each fuse position In the event of a Fuse Alarm or...

Page 4: ...solated from all other returns See Figure 3 1 1 Note For this high current panel a two hole lug must be used on all stud blocks input and output battery and return for the fuse panel to function prope...

Page 5: ...l Operation LEDs 9 for each input that has been connected and have no red Fuse Alarm LEDs illuminated 4 9 Install fuses in each of the TFD cartridges as required Unless otherwise specified be sure to...

Page 6: ...ure 40 to 131 F 5 14 Color Off White 5 15 Relay current 1Amp 58Vdc max We recommend that you size fuses such that they do not run at more than 70 of their rating Thus a 70A fuse should not be run at m...

Page 7: ...rning the sale of the product Any attempt to repair or modify the equipment by anyone other than an authorized Westell representative will void the warranty 7 2 Westell will repair or replace any defe...

Page 8: ...___________________ 8 COM NC NO 1 2 3 4 1 2 3 4 CHASSIS GND BAT IN RTN IN RTN OUT BAT OUT RTN OUT BAT OUT BAT IN RTN IN RTN OUT BAT OUT BAT IN RTN IN RTN OUT BAT OUT BAT IN RTN IN 4 3 2 1 1 2 3 4 ALAR...

Page 9: ..._____________________________________________________________________________________ 9 Noran Tel 5 OFFSET MOUNTING FLUSH MOUNTING 0 2500 4 2700...

Page 10: ..._____________________________________________________________________________________ 10...

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