Page 566 - Din prodcuts 2020

5/122 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS 2CHC 420 001 C0201

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Protection and safety
Telecoms & computer line protection
OVR KT & KE Series

5
Combined Category D, C, B tested protector (to BS EN 61643) suitable for use
on ten line LSA-PLUS disconnection modules to PBX telephone exchanges, ISDN
and other telecoms equipment with LSA-PLUS disconnection modules. For use
at boundaries up to LPZ 0 to protect against flashover (typically the service
entrance location) through to LPZ 3 to protect sensitive electronic equipment.

Features & benefits
• Low cost protection for large numbers of data and signal • At larger installations OVR K10T1 and OVR K10T1/PTC
lines provide all in one protection for all ten lines on LSA-PLUS
• Very low let-through voltage (enhanced protection to disconnection modules
IEC/BS EN 62305) between all lines - Full Mode protection • Use the OVR KE10 to provide trouble free earthing for
• Full Mode design capable of handling partial lightning up to ten OVR KT1 and OVR KT1/PTC (per disconnection
currents as well as allowing continual operation of module)
protected equipment • OVR K10T1 and OVR K10T1/PTC have an integral earth
• Repeated protection in lightning intense environments connection, and an external M4 earth bush for use with
• Colour of housing distinguishes electrically different non-metallic LSA-Plus frames
protectors - avoids confusion when installed together • OVR KT1/PTC and OVR K10T1/PTC have resettable
on the same distribution frame overcurrent protection and are rated for power cross faults
• Quick and easy plug-in installation, with ‘bump’ • OVR KT1, OVR KT1/PTC, OVR K10T1 and OVR K10T1/PTC are
location feedback suitable for telecoms applications in accordance with
• Under power line cross conditions/PTC versions offer safe Telcordia and ANSI Standards
disconnection during fault duration. Unit auto-resets once
fault corrected

Application Installation
• For PSTN (e.g POTS, dial-up, lease line, T1/E1, Install protectors on all lines that enter or leave each
*DSL and Broadband) and U interface ISDN lines, use OVR building (including extensions to other buildings). Identify
KT1 (or OVR KT1/PTC) and OVR K10T1 (or OVR K10T1/PTC) the lines requiring protection and plug-in the protector
• Protect single lines with OVR KT1 or OVR KT1/PTC (ensuring the correct orientation) for a series connection.
• Protect all ten lines on a disconnection module with Plug OVR K10T1 or OVR K10T1/PTC directly into each
OVR K10T1 or OVR K10T1/PTC disconnection module requiring protection.

OVR KT1 and OVR KT1/PTC must be installed via the OVR
KE10 earth bar. Clip an OVR KE10 on to the disconnection
module and plug an OVR KT1 or OVR KT1/PTC in to each line
on the module that needs protecting. In the unlikely
situation that the protector is damaged, it will sacrifice
itself and fail short circuit, taking the line out of
commission, indicating it needs replacing and preventing
subsequent transients from damaging equipment.

For further information on global telephony applications,
see separate Application Note OVR AN005 (contact us for
a copy).

NOTE: For individual telephone lines and lines at unmanned sites the high performance OVR TN or plug-in OVR TN/JP or OVR TN/RJ11 Series should be used.
For plug-in S/T interface ISDN protection, use the ISDN Series protectors.