Minebea Intec PR 1626/60 - Potential Equalization and Grounding

① Ex area
② no ex area (secure area)
③ Screen
④ Cable junction box
⑤ External power supply SELV U
DC
= 24 V
⑥ Indicator
⑦ Potential equalization
5.2.1 Potential equalization
In order to avoid possible balancing currents between the individual conductive system
components, a potential equalization must be installed in potentially explosive areas.
The terminal must be connected to the potential equalization system and installed and
earthed in accordance with local regulations (see also schematic diagram).
Schematic diagram
(1)
(2) (1) (1) (2) (3)
(6) (6)
(A)
(4)
(4) (4)
(A) (A) (A) (A) (A) (A)
(E)
(5)
(B)
(1)(1)(1)(1)(1)
(A) (A) (A) (A)
1
2
4
3 3
① Potentially explosive atmosphere
② Non-potentially explosive atmosphere
③ Load cell
④ Cable junction box
Intrinsically safe load Cell interfaces PR 1626/60, ../61 5 Installation
EN-14 Minebea Intec