Dear Treg,
After reviewing immunity and telecom documents concerning surge requirements
and compatibilty of telecommunications terminal equipment, several questions
have arisen:
1. IEC 1000-4-5, EN 61000-4-5, and prEN 55024 define requirements for
surge to voltage levels of 4.0 kV. As I understand these test procedures,
telecommunications terminal equipment is tested to 1.5 kV without external
protection. For levels which exceed 1.5 kV, a primary protection circuit is
installed between the surge generator and the terminal equipment. Is this
understanding correct?
1a. If this understanding is correct, can anyone provide a
reference for this primary protection?
2. Can someone provide a reference for Israel's surge requirements?
3. Are there any international or country specific surge requirements
(longitudinal or metallic) which exceed a voltage amplitude of 2 kV (without
primary or other external protection)?
Any assistance with these questions will be greatly appreciated.
Thanx, in advance, for any assistance.
Mark Murphy
Motorola ISG
