Dk14 Secondary Protection - Toshiba Strata DK14 Installation And Maintenance Manual

DK14 Installation

DK14 Secondary Protection

DK14 Secondary Protection



   


 



 



 
The following diagram (see
outside wiring.
 




   


 









 









2422
Important!
Figure 1-15 DK14 Secondary Protector Diagram
1-22




 
 



 


 
     
 




Figure 1-15) shows where secondary protectors must be installed for
 

 


Building #1
QSTU2

   

   

   




DK14 KSU
Base Unit
and
QCDU2













   

   
DDCB
DK14 KSU
Base Unit
and
QCDU2
To protect against transient voltages and currents, solid state secondary protectors
must be installed if there is outside wiring. These protectors, which contain fast
semiconductors in addition to fuses, shall comply with the requirements for
secondary protectors for communication circuits, UL497A.
Care must be taken to ensure that they are very well grounded to a reliable earth
ground. Recommended protectors are available in the fast Series 6 line from
ONEAC® Corp., Libertyville, Illinois 60048, (800) 327-8801. Install and test the
secondary protectors precisely to the installation instructions of thee manufacturer.
 
Building #2
Standard
Telephone
or Other
Device
MDFB
Earth Ground
CO Line
Earth Ground
   
   
HESB
(optional)
 
Digital
Telephone
or Cordless
Base

Secondary protectors
Strata DK I&M 5/99