Lightning and Surge Protection
IsoPro Kompact BC TT (3+1)
IPK BC TT 275 (/FM)
Combined four-pole lightning current and surge arrester
meeting the requirements of SPD type 1+2 (BC); IEC: SPD class I+II, acc. to IEC 62305 part 1
To be used as equipotential bonding lightning conductor in TT-Power Net Systems
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Leakage current free lightning current and surge protective device (SPD)
Based on hermetically sealed gas filled spark-gaps
No blow-out vents, no safety distances necessary for installation
Protection level ≤ 2,5 kV
Lightning impulse current 25kA per Phase to N, resp. 100 kA for N-PE
High insulation resistance Risol > 10G Ω
Function control with potential-free remote signal contact (optional)
Visual monitoring by LED indicator
Product Description
IPK BC TT 275 (/FM) is a four-pole lightning current and surge arrester in the so called 3+1 protection circuit for
the protection of TT-Power Net Systems.
These devices with a two stage protection of class I and class II contains in the class I stage a hermetical
sealed heavy-duty isolating spark-gap, filled with inert gas. The class II stage contains a MOV + GDT in serial
connection (protection valve).
This makes dangerous blow-out vents unnecessary. This also saves you from keeping the safety distance to
adjoining electrical components usually necessary to avoid unwanted electric arcs.
There is no risk of leakage current !
The protective circuit is installed in an easy-to-handle compact housing of only 88mm (5 DIN modules, each
17,5mm) with fixable snap-on clips for mounting on 35 mm form C DIN rail.
Large size screw terminals for wire connections up to 50mm² for optimal ground connection.
There is an built in a potential-free thermal sensor with remote NC signal contact (/FM) optional available.
Application:
The IPK devices for TT net are usually installed in main-distribution panels, at the boundary 0B-1 or higher,
according to the lightning zones concept of IEC EN 62305:2006-10 part 1-4 (DIN EN 62305:10.2006,Teil 1-4;
VDE 0185-305:2006-10, Teil 1-4)
Protects People and Valuables
Technical Data:
Application
for three phase TT nets s and neutral (L1, L2, L3 –N / PE – N) with LED monitoring and optional with potentialfree thermal sensor with NC remote signal contact
Type
Article and order no.
IPK BC TT 275
IPK BC TT 275 /FM
38 11 74
38 11 75
SPD class I II
SPD Typ T1 + T2
(BC)
IEC 61643-1
EN 61643-11
E DIN VDE 0675-6 11/98-A1
Nominal power supply voltage 50/60 Hz
Un
[V]
230 / 400
Rated voltage
(max. continuous operating voltage) 50/60 Hz
Uc
[V]
275
Voltage protection level L-N at 100 % lightning impulse
spark over voltage (1,2/50 µs)
UP
[kV]
≤ 1,4
Voltage protection level L-N at Iimp
UP
[kV]
≤ 2,5
Insulation resistance
Risol
[GΩ]
> 10
Response time
tA
[ns]
< 50
L1 + L2 + L3 – N:
Max. permissible line resp. backup fuse F2
Ipeak
Q
W/R
IN
[kA]
[As]
[kJ/Ω]
[A]
Operating temperature range
t
[°C]
Lightning impulse current iimp (10x 8/80 µs)
(stronger than 8/20µs)
N – PE:
75 (15kA 10/350 µs)
10
5 x 10
100 (20kA 10/350µs)
50
2.500
160 A gL/gG
-40 … +85
Max. cross-sectional area
[mm²]
Recommended cross sectional area
[mm²]
25
Recommended connection torque
[Nm]
4,5
Max. cross-sectional area for
remote signal contact terminal
[mm²]
1,5
stranded 50 / flexible 35
250V/0,5A
Max. switching capacity of remote signal contact
Keripol / yellow- Noril SE100 / grey
Material of housing / colour
IP 20
Ambient protection category (IEC/EN 60529)
35 mm DIN rail form C (DIN/EN 50 022)
Mounting on
Diagram
Dimensions in mm
Dimension 5 DIN modules, DIN 43880
IPK BC TT 275
IPK BC TT 275 (/FM)
11.09.2007 .pdf
© 2007 by LEUTRON GmbH
Subject to technical modifications and delivery
possibility
LEUTRON GmbH
Lightning and Surge Protection
Humboldtstrasse 30-32
D -70771 Leinfelden-Echterdingen
GERMANY
Telephone
Fax
Email:
+49 711 / 9 47 71-0
+49 711 / 9 47 71-70
info@leutron.de
www.leutron.de