Electronic Components Datasheet Search |
|
PP3100SC-LF-T Datasheet(PDF) 5 Page - Protek Devices |
|
PP3100SC-LF-T Datasheet(HTML) 5 Page - Protek Devices |
5 / 6 page 5 05081.R10 2/07 www.protekdevices.com PP0640SA thru PP3500SC APPLICATION NOTE FIGURE 1: UL 1459 & FCC Part 68 - Metallic Protection The TSS (Thyristor Surge Suppressor) device is located across the tip-to-ring after a limiting resistor and fuse combination. R TIP and R RING resistors are optional depending upon the TSS device selec- tion. Without the resistors, the PP3100SB/SC is recommended. However, with a resistance value of 7.5 Ohms for tip and ring, the PP3100SA is recommended. Digital signals may use a lower TSS device depending upon the total tip to ring voltage range. Selection of the TSS device, either PPxxxxSA or SB/SC is based upon the value of the tip and ring resistors. For the National Electric Code (NEC) article 800, it is recommended that at least one fuse be used in the tip or ring line for metallic surges. Fuses may be replaced with a suitable Positive Temperature Coefficient (PTC) automatic resettable current limiting device. FIGURE 2 - UL 1459 & FCC Part 68 - Longitudinal Protection There are two TSS devices, one located from tip-to-ground and one ring-to-ground. For standard analog signals, the PP3100SA is recommended with a typical resistor value for tip and ring of 15 Ohms. The PP3100SB/SC is recommended for resistor values of 7.5 Ohms each. The National Electric Code (NEC) article 800 requires two fuse elements when connecting to ground. Fuses or a suitable Positive Temperature Coefficient (PTC) automatic resettable current limiting device may be used. The purpose of this circuit is to limit AC power current from getting on the ground line causing any safety hazard. FIGURE 3 - UL 1459 & FCC Part 68 - Metallic & Longitudinal Protection Three equal TSS devices are used in this application for metallic (tip- to-ring) and longitudinal (tip-to-ground and ring-to-ground) protec- tion. For analog signals, the PP3100SB/SC is recommended. With a resistance value of 15 Ohms for the tip and ring resistors, the PP3100SA may be used. The National Electric Code (NEC) article 800 requires two fuse elements when connecting to ground. Fuses or a suitable Positive Temperature Coefficient (PTC) automatic resettable current limiting device may be used. This circuit is recommended for protection against the Bellcore requirement: First Level Lightning Surge Tests (Telecommunications Port), document # GR-1089-CORE. Fuse TIP R Tip RING To Protected Equipment R Ring FIGURE 1 - Metallic Protection Tip R To Protected Equipment Ring R TIP RING FIGURE 2 - Longitudinal Protection Tip R To Protected Equipment Ring R TIP RING FIGURE 3 - Metallic & Longitudinal Protection |
Similar Part No. - PP3100SC-LF-T |
|
Similar Description - PP3100SC-LF-T |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |