Page 1
A B B M E A S U R E M E N T & A N A LY T I C S | I N S TA L L AT I O N G U I D E | I M/C 1 9 5 0 - I N N R E V. F C1950...
Page 2
Electrical safety Health and safety This equipment complies with the requirements of CEI/IEC To ensure that our products are safe and without risk to health, 61010-1:2001-2 ‘Safety Requirements for Electrical Equipment the following points must be noted: for Measurement, Control and Laboratory Use’. If the •...
S P E C IF IC M M IN G P R O G R A IO N The series of C1950 instruction manuals is shown in Fig. 1.1. O P E R A T A T IO N , including the specification sheet, are...
2 ELECTRICAL NOISE 3 SHIELDING Any unwanted extraneous electrical signal in an electronic The importance of shielding and grounding on electrical system is known as noise. Noise can be caused by EMI or control and instrumentation equipment and wiring cannot be RFI.
4 SIGNAL GROUNDING To effectively ground a shield of a wire or cable carrying If a double-shielded wire is used, ground the inner shield at signals, the shield must be intentionally connected to earth, or one end and ground the outer shield at the other end. to some conducting body serving in place of earth, through a low impedance ground connection.
5 EXCLUSION ZONES An exclusion zone is defined as the minimum distance The size of the exclusion zone(s) should be site-specific and permitted between instrumentation devices and the point dependent upon the effective radiated power of the portable where EMI/RFI emitters may be activated. Within an exclusion EMI/RFI emitter type(s) likely to be used.
Page 8
We reserve the right to make technical changes or modify the contents of this document without prior notice. With regard to purchase orders, the agreed particulars shall prevail. ABB does not accept any responsibility whatsoever for potential errors or possible lack of information in this document.