The following changes in requirements to the Standard for Surge Protective Devices, UL 1449, are being proposed for preliminary review and comment only:
1. For Preliminary Review Only: Scope and Glossary Revisions
2. For Preliminary Review Only: Additional Requirements for SPDs with Integral Thermal Links and SPDs with Temperature Responsive Devices that Open During Testing
3. For Preliminary Review Only: Expansion and Clarification of Requirements for Interchangeability of Metal Oxide Varistors (MOVs)
4. For Preliminary Review Only: Clarification of SPD Testing Matrix
5. For Preliminary Review Only: Addition of Section 59A, Metal Oxide Varistor Voltage
6. For Preliminary Review Only: Addition of Section 59B, Metal Oxide Varistor DC Standby Current
7. For Preliminary Review Only: Addition of Section 62A, Varistor Voltage