Lightning and Surge Protection
PowerPro BC (reducing follow-on current)
PP BC TT 25/100 (/FM)
Combined four-pole lightning current and Surge Protective Device
meeting IEC and EN test class I+II; SPD type T1 T2 (BC)
Used for lightning protective equipotential bonding in 3-phase + N ..... IEC TT-Power Net Systems
• Combined 4-pole Surge Protective Device (SPD), fully pre-wired, makes
installation of class II SPD in sub-distribution board probably unnecessary
• Leakage current free!
• Lightning current and SPD based on hermetically sealed gas filled spark-gaps
• No blow-out vents, no safety distances for installation necessary
• Highly resistant against danger TOV
• Voltage protection level ≤ 2,5 kV
• Lightning current test (10/350 µs) level 25 kA per phase, 100 kA for N-PE
• Follow-on currents reducing
• High insulation resistance Risol> 10 G Ω
• Serial wiring with multifunctional screw terminal
• Function control with potential-free remote signal contact (optional)
Product description:
This combined Lightning and Surge Protective 4-pole SPD type PP BC TT 25/100 and PP BC TT 25/100/FM,
with remote signal contacts, connected in the so called 3+1 circuit, offer a complete solution for the protection
of TT-Power Net Systems. Usually installed in main-distribution board at service entrance.
Thanks to the use of the patented, hermetically sealed gas-filled isolating spark-gaps (inert gas) this SPD
allows you to achieve a high-level discharge capacity without needing blow-out vents. This saves you from
keeping the safety distance to adjoining electrical components usually necessary to avoid unwanted electric
arcs and fire hazardous.
As there is no risk of leakage currents, this SPD can also be installed before the electric power meter (acc. to
TAB2000, installation rules of the Union of German Electric Works, VDEW).
This device is capable to discharge lightning current surges of 25 kA (10/350 µs) per phase and total
100 kA (10/350 µs) between N-PE as well as self-extinguish main supply and reducing net Follow-on currents.
The protective circuit is installed in an easy-to-handle compact housing with snap-on clips for 35 mm DIN rail
mounting on both sides, equipped with multifunctional screw terminals for wire and bus-bar connections.
Installation can be carried out either by parallel wiring via the multifunctional screw connection terminal
(terminal L1´, L2´, L3´, and PE´) or else as serial V-wiring via the 2-pole bus-bar connection (L to L´ ).
A built in potential-free hermetical sealed NC remote signal contact (/FM) is optional available. The wire
connection can be made via a pluggable screw terminal block included to the SPD.
Protects People and valuables
Technical Data
Application
4 pole Lightning Current and Surge Protective Device for TT3+1-Power Net Systems.
To be installed at the boundary of LPZ 0B-1 or higher, acc the Lightning Protection Zone conception in IEC 62305 part 1-4
Type
Order and part number
IEC 61643-1
EN 61643-11
E DIN VDE 0675-6 11/98-A1
Nominal net voltage 50/60 Hz
Rated voltage (max. continuous operating voltage) 50/60 Hz
Insulation resistance
Voltage protection level at 100% lightning impulse
spark over voltage (1,2/50µs), 6kV
Voltage protection level at Iimp 10/350µs
Response time
Lightning impulse current Iimp (10/350µs)
Max impulse discharge current (8/20µs)
Short-circuit withstand capability at max. pre-fuse
Max. permissible line resp. back fuse F2
at parallel wiring
Max. permissible line resp. back fuse F3
at serial V- wiring
PP BC TT 25/100/FM
37 39 20
37 39 22
Un
Uc
Risol
[V~]
SPD class I+II
T1 + T2
BC
230 / 400
[V~]
255 (275)
[GΩ]
> 10
Uas
[kV]
≤ 2,5
Up
tA
[kV]
≤ 2,5
< 50
[ns]
L1, L2, L3 – N:
25
12,5
160
N - PE:
100
50
2.500
Ipeak
Q
W/R
[kA]
[As]
[kJ/Ω]
Imax
Ik
[kA]
50
[kAeff]
50
t
Operating temperature range
PP BC TT 25/100
[A]
250 A gL/gG
[A]
125 A gL/gG
-40 … +85
[°C]
Min. / Max. cross-sectional area
[mm²]
stranded 50 or flexible 35 with sleeve
Min. / Recommended cross sectional area
[mm²]
10 / 25
Recommended connection torque
[Nm]
4,5
Max. cross-sectional area for remote signal contact
[mm²]
1,5
AC 250V/ 0,5A
Max. switching capacity of remote signal contact
Polycarbonate (halogen free) UL 94-V0 / yellow
Material of housing / colour
IP 20
Protection degree (IEC/EN 60529)
35 mm DIN rail form C (DIN/EN 50 022)
Mounting on
Dimensions in mm / Diagram
Application:
Dimension 4x 2 modules á 17,5mm; acc. DIN 43880
If line or backup fuse (F1) ≤ 250 A gL/gG
back up fuse (F2) is not forced.
Parallel wiring
for active lines
2-pole bus-bar
connection
Line or backup fuse (F3)
≤ 125 A gL/gG
Serial wiring
for active lines
PP BC TT 25/100 (/FM)
09.09.2008 _pdf
© 2008 by LEUTRON GmbH
Subject to technical modifications and
delivery possibilities
LEUTRON GmbH
Lightning and Surge Protection
Humboldtstrasse 30-32
D-70771 Leinfelden-Echterdingen
GERMANY
Telephone +49 711 / 9 47 71-0
Fax
+49 711 / 9 47 71-70
email:
info@leutron.de
www.leutron.de