CE marking;
declaration that the product meets the requirements of applicable EC directives.
USB interface
To identify the connecting terminal of the USB port.
Crossed-out wheelie-bin;
products in scope of the EU WEEE Directive are labelled with a crossed-out bin
symbol as required by this directive. The symbol indicates that end users should
segregate the product from other waste at end-of- life.
2.3
Installation of the instrument
Natural air circulation should be provided inside the distribution board cabinet, and in the instrument’s neigh-
borhood. Especially underneath the instrument, no other instrumentation that is source of heat should be
installed or the instrument might overheat and/or the internal temperature value measured may be influenced.
A connection wire’s maximum cross section area is 2
.
5
mm
2
in case of all screw terminals.
The SMC 133 is primarily intended for DIN-rail mounting. Dimensions of the instrument are on figure 3.
There are also positions marked with dash dot lines of holes for wall-mounting with three screws.
60.6
90
21.5
10
45
62
58
106
99.8
30.3
SMC 133
Power Analyzer
001
03
2014
SMC 133 L
Figure 3: Dimensions of the SMC 133 analyzer.
2.3.1
Supply voltage
The power supply terminal is labeled as X1 and X2. The two terminals are complemented with a symbol (U,
L or S), indicating the respective auxiliary voltage option (details in ch. 3). Proper supply voltage must be
connected to the terminals X1 and X2 via a circuit breaking device (power switch – see installation diagram on
4
