Siemens SIRIUS System Manual

3RW3 semiconductor motor control unit
SIRIUS System Manual
8-50
GWA 4NEB 430 0999-02b
8.7.3 Site altitude
If the site altitude is above 1000 m, the following are necessary:
• A reduction in the rated current for thermal reasons
• A reduction in the rated voltage on account of the diminished dielectric
strength
Reductions as a func-
tion of site altitude
The diagram below plots the reductions in rated current and rated operating
voltage as a function of site altitude:
Figure 8-25: Reductions as a function of site altitude
0 500 1000 1500 2000 2500 3000 3500 4000
70
75
80
85
90
95
100
105
Ue reduction
Ie reduction
Site altitude in m

Siemens SIRIUS Specifications

General

Product brand name	Siemens
Series	SIRIUS
Coil Voltage	24V DC, 110V AC, 230V AC
Switching Capacity	Up to 10A
Mounting Type	DIN rail
Product designation	SIRIUS
Contact Material	Silver alloy
Contact Rating	Varies depending on the specific SIRIUS relay model (e.g., 6 A at 250 V AC, 10 A at 250 V AC)
Switching Voltage	Varies depending on the specific SIRIUS relay model (e.g., 250 V AC, 400 V AC)
Mechanical Life	Up to 10 million operations
Electrical Life	Up to 100, 000 operations
Operating Temperature	-25°C to +55°C
Protection Class	IP20
Size of relay base	Varies depending on the specific SIRIUS relay model