Regulatory Compliant Solutions
Regulatory Compliant Solutions
When determining the most appropriate solution to meet the lightning and AC power fault
conditions for regulatory requirements, coordination is essential between the SIDACtor
device, fuse, and any series impedance that may be used.
Figure 4.14 through Figure 4.19 show templates in which this coordination is considered for
the most cost effective and reliable solutions available. For exact design criteria and
information regarding the applicable regulatory requirements, refer to the SIDACtor device
and fuse selection criteria in this Section 4, “Regulatory Requirements”, and in Section 5,
“Technical Notes”.
GR 1089 and ITU-T K.20 and K.21
Figure 4.14 and Figure 4.15 show line interface protection circuits to meet GR 1089 surge
immunity requirements without the additional use of series resistance. Use the “C” series
SIDACtor device and F1250T to meet GR 1089 surge immunity requirements. Use the
“A” series SIDACtor device and F0500T to meet ITU-T K.20 and K.21 basic surge immunity
requirements without the additional use of resistance.
The enhanced surge immunity requirements of ITU K.20 and K.21 require the use of “C”
rated SIDACtor devices if no series resistor is used.
.
F1250T
Tip
To
Protected
Equipment
Ring
F1250T
Figure 4.14 Balanced Line Protection using Teccor’s “AC” or “AA” series
F1250T / F0500T
Tip
To
Protected
Equipment
Ring
Figure 4.15 Metallic-only Solution using Teccor’s “SC” or “SA” series.
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© 2002 Teccor Electronics
SIDACtor Data Book and Design Guide
®
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