Derating - Siemens SIRIUS 3RT Series System Manual

The infeed system has been designed for installation on a 35 mm DIN rail with 7.5 mm
overall depth. These DIN rails provide the contactor base with a stable mounting surface.
When using DIN rails with a depth of 15 mm, the spacer connected to the underside of the
contactor base has to be knocked out and attached to the counterpart, which is also located
on the underside. This stabilizes the contactor base on the mounting surface. When using
DIN rails with a depth of 7.5 mm, the spacer has no function and can be removed.
The link modules are used for direct feeders, so it is not absolutely necessary to use a
contactor base. The motor starter protector and contactor assemblies can then be snapped
directly onto the slots in the 3-phase busbars. The corresponding link modules
(3RA19 21-1...., 3RA29 21-1...., 3RA29 11-2. or 3RA29 21-2....) should generally be used for
size S00 and S0 feeders.
Terminal block (3RV2917-5D)
The 3RV29 17-5D terminal block can be used to integrate additional 1-, 2-, and 3-phase
components alongside the SIRIUS motor starter protector. With the aid of the terminal block,
the 3 phases can be fed out of the system, thereby enabling even single-phase loads to be
integrated into the system. As the terminal block plugs into the slot on the expansion plug,
the outfeed can be positioned in the center or at the end of the infeed system. The terminal
block can be rotated through 180° and interlocked with the infeed system's support modules.
So that the 1-, 2-, and 3-phase components can be plugged into the infeed system, the
45 mm 3RV19 17-7B DIN rail (which is screwed onto the support plate) is available.
4.9.13.2

Derating

Derating for fuseless load feeders S00/S0 in the 3RV (63 A) CC infeed system
Size
S00
S0
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
⑦
Rated current Max. permissible rated operating
I [A] current I
e
≤ 14 100
> 14 ... 16 87
> 14 ... 16 100
≤ 16 100
> 16 ... 25 87
> 16 ... 25 100
> 25 ... 32 87
> 32 Not permissible
SIRIUS 3RV2 motor starter protectors
[%]
e
4.9 Accessories
Max. ambient temperature
T [°C]
60
60
40
60
60
40
40
449