Installation Instruction

10. Notice: For unstabilized electric networks, which frequently generate spikes, the use of a
voltage limiting device is advised.
11. Notice: The unit complies with Overvoltage Category II. It also complies with the surge
requirement according to EN 61000-4-5 (fine protection); however, installation of an
additional medium (via local supply connection) and/or coarse protection (external surge
protection) is recommended depending on the individual application in order to avoid
damage caused by overcurrent.
For Canada and US, components used to reduce the Overvoltage Category shall comply with the
requirements of IEC 61643-series. As an alternative, components used to reduce the Overvoltage
Category may comply with ANSI/IEEE C62.11, CSA Certification Notice No. 516, CSA C22.2 No.
1, or UL 1449. Suitability of the component for the application shall be determined for the intended
installation.
12. Notice: Observe the labels on the front panels before connecting or disconnecting any
cables.