Siemens 7UT51

2
Description of Relay
7UT51 v3
28 PRIM-2330C
Climatic Conditions
Permissible ambient temperature
during service
during storage (in original packaging)
during transport (in original packaging)
−5 °C to +55 °C (23°F to +131°F)
−25 °C to +55 °C (−13°F to +131°F)
−25 °C to +70 °C (−13°F to +158°F)
Permissible humidity Mean value per year: ≤ 75% relative humidity; up to 95%
relative humidity for up to 30 days per year. Condensation
is not permitted!
Note:
Siemens recommends that all units be installed such that they are not subjected to direct sunlight, nor to large
temperature fluctuations which may result in condensation.
Electrical Insulation
Standard IEC 255
-
5
High voltage test (routine test) except d.c. voltage supply input 2 kV (rms), 50 Hz, 1 min.
High voltage test (routine test) only d.c. voltage supply input 2.8 kV d.c., 30s per polarity
Impulse voltage test (type test) all circuits, class III 5 kV (peak); 1.2/50 μs; 0.5 J; 3 positive and 3 negative
shots at intervals of 5 s
Electromagnetic Compatibility (Immunity)
Standards IEC 255
-
6, IEC 255
-
22 (product standards);
EN 50082
-
2 (generic standard)
VDE 0435 /part 303
High Frequency
IEC 255
-
22
-
1 class III
2.5 kV (peak); 1 MHz; τ = 15 μs; 400 shots/s; duration 2 s
Electrostatic discharge
IEC 255
-
22
-
2 class III and IEC 1000
-
4
-
2 class III
4 kV/6 kV contact discharge; 8 kV air discharge; both
polarities; 150 pF; R
i
= 300 Ω
Radio
-
frequency electromagnetic field, non
-
modulated
IEC 255
-
22
-
3 (report) class III
10 V/m; 27 MHz to 500 MHz
Radio
-
frequency electromagnetic field, amplitude modulated
IEC 1000
-
4
-
3, class III
10 V/m; 80 MHz to 1000 MHz; 80% AM; 1 kHz
Radio
-
frequency electromagnetic field, pulse modulated
IEC 1000
-
4
-
3/ENV 50204, class III
10 V/m; 900 MHz; repetition frequency 200 Hz; duty cycle
50%
Fast transients
IEC 255
-
22
-
4 and IEC 1000
-
4
-
4, class III
2 kV; 5/50 ns; 5 kHz; burst length 15 ms; repetition rate 300
ms; both polarities; R
i
= 50 Ω; duration 1 min
Conducted disturbances induced by radio
-
frequency fields,
amplitude modulated; IEC 1000
-
4
-
6, class III
10 V; 150 kHz to 80 MHz; 80% AM; 1 kHz
Power frequency magnetic field
IEC 1000
-
4
-
8, class IV; IEC 255
-
6
30 A/m continuous; 300 A/m for 3 s; 50 Hz 0.5 mT; 50 Hz
Electromagnetic Compatibility (Emission)
Standard EN 50081
-
* (generic standard)
Conducted interference voltage, aux. voltage
CISPR 22, EN 55022, class B
150 kHz to 30 MHz
Interference field strength
CISPR 11, EN 55011, class A
30 MHz to 1000 MHz