Connect in series with the data communication or signal line either near where it enters or leaves the building or close to the equipment being protected (eg within the control panel). Either way, it must be very close to the system's earth star point. Install protectors either within an existing cabinet/cubicle or in a separate enclosure.
Suitable accessories
Simultaneously mount and earth up to 4 of these protectors on a CME 4, up to 8 on a CME 8, up to 16 on a CME 16 or up to 32on a CME 32. Enclosures suitable for up to two (WBX 2/G) or three (WBX 3/G) protectors, or a CME 8 and protectors (WBX 8) or one or two CME 16 kits and protectors (WBX 16/2/G).
Electrical specification
ESP 06H
ESP15H
ESP30H
ESP50H
Nominal voltage¹
6V
15V
30V
50V
Maximum working voltage²
7.79V
16.7V
36.7V
56.7V
Current rating (signal)
4A
4A
4A
4A
In-line resistance
(per line ± 10%)
<0.05ohms
<0.05ohms
<0.05ohms
<0.05 ohms
Bandwidth (-3dB 50ohm system
160kHz
140kHz
130kHz
120kHz
1 Nominal voltage (DC or AC peak) measured at <10µA
(ESP 15H, ESP30H, ESP50H) and <200µA (ESP 06H).
2 Maximum working voltage (DC or AC peak) measured at <5mA
leakage (ESP 15H, ESP 30H, ESP 50H) and <10mA (ESP 06H).
Transient specification
ESP 06H
ESP15H
ESP30H
ESP50H
Let-through voltage (all conductors)¹
5kV, 10/700µs test to:
BS 6651:1999 Appendix C, Cat C-High
ITU (formerly CCITT) IX K17
10.8V
26.2V
44.3V
65.8V
Maximum surge current
-per signal wire
-per pair
10kA
20kA
10kA
20kA
10kA
20kA
10kA
20kA
1 The maximum transient voltage let-through the
protector throughout the test (+/-10%), line to line and line to earth. Response time <10ns.
2 Tested with 8/20µs waveshape to ITU (formerly CCITT), BS 6651:1999 Appendix C.
