Identify the lines requiring protection and plug-in
the protector (ensuring the correct orientation) for a series connection.
Plug ESP K10T1/2 directly into each connection strip requiring protection.
ESP KT1/2 must be installed via the ESP KE10 earth
bar. Clip an ESP KE10 on to the connection strip and plug an ESP KT1/2
in to each line on the strip that needs protecting.
If the protectors' ratings are exceeded 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.
Electrical specification
ESP KT1
ESP KT2
ESP K10T1
ESP K10T2
Maximum working voltage
-line to earth
-Line to line
190V
190V
58V
5V
190V
190V
58V
5V
Current rating (signal)
300mA
300mA
300mA
300mA
In-line resistance (± 10%)
4.4ohms
4.4ohms
4.4ohms
4.4ohms
Bandwidth (-3db 50ohm system)
>50MHz
>50MHz
>50MHz
>50MHz
1 Maximum working voltage (DC or AC peak) measured
at 95µA for ESP KT1 and ESP K10T1 and at 5µA for ESP KT2 and
ESP K10T2.
2 Post transient recovery voltage >80V.
Transient specification
ESP KT1
ESP KT2
ESP K10T1
ESP K10T2
Let-through voltage¹
5kV 10/700µs test to:
BS6651:1999 Appendix C, Cat C-High
ITU (formerly CCITT) IX K17
-Line to line
-Line to earth
200V
200V
27V
80V
200V
200V
27V
80V
Maximum surge current²
-per signal wire
-per pair
5kA
10kA
5kA
10kA
5kA
10kA
5kA
10kA
1 The maximum transient voltage let-through the protector
throughout the test (+/-10%), line to line & line to earth. Response time
<10ns.
2 Tested with 8/20µs waveshape to ITU (formely CCITT), BS 6651:1999
Appendix C.
Mechanical specification
ESP KT1, ESP KT2
ESP K10T1, ESPK10T2
ESP KE10
Temperature range
-25°C to +70°C
-25°C to +70°C
-
Connection type
LSA-PLUS 'disconnection' connection
strips (BT part number 237A)
