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Technical
Section 11
Dimensions
Section 12
4
iPRD surge arresters
Type 2 or 3 LV withdrawable surge arresters (cont.)
Protection
Load protection
Technical data
Main characteristics
Operating frequency
50/60 Hz
Operating voltage (Ue)
230/400 V AC ±10 %
Permanent operating current (Ic)
< 1 mA
Response time
< 25 ns
Short circuit withstand (Isccr)
50 kA (50 Hz)
Temporary overvoltage withstand (U
T
)
U
T
(L-N)
337 V AC / 5 s
U
T
(L-PE)
442 V AC / 5 s
Temporary overvoltage
Safe failure mode
(U
T
)
U
T
(N-PE)
1200 V AC / 200 ms
U
T
(L-PE)
1453 V AC / 200 ms
Ground residual current (I
PE
)
I
PE
(N-PE)
3 μA for 1P+N, 3P+N
Satisfactory operation indication: by
mechanical indicator
White
In operation
Red
Cartridge must be replaced
Remote indication of satisfactory operation
By contact NO, NC 250 V / 0.25 A
Additional characteristics
Degree of protection (IEC 60529)
Device only
IP20 (built-in)
Device in modular
enclosure
IP40
Operating temperature
-25°C to +60°C
Humidity range
5 % to 95 %
Type of connection terminals
Tunnel terminals, 2.5 to 35 mm²
Standards
IEC 61643-11: 2011
T2
,
T3
and
EN 61643-11: 2012 Type 2, Type 3
Surge arrester/circuit breaker association
Type of surge arrester
Associated circuit breaker
(1 to 4 poles protected)
iPRD65
Curve C 50 A
iPRD40
Curve C 40 A
iPRD20
Curve C 25 A
iPRD8
Curve C 20 A
Connection
DB123130
Type
Tightening torque
Copper cables
Rigid
Flexible or with ferrule
iPRD
3.5 N.m
2.5 to 25 mm
2
4 to 16 mm
2
6.5mm
14mm
PZ2
IP20
IP40
DB122945
DB122946
DB123314