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Description
The following standards additionally apply for explosion-proof motors:
Table 3-5
Feature
Type of protection Ex t
①
The following standards additionally apply for explosion-proof machines:
Table 3-6
Characteristic
Type of protection Ex d
Rating plate
The rating plate shows the identification data and the most important technical data. The data
on the rating plate and the contractual agreements define the limits of proper usage.
Motor enclosure with water-jacket cooling
Stator frame and bearing shields are from cast iron or steel. The stator jacket is formed as a
double jacket through which the coolant is fed. The frame is equipped with a cooling water
inlet and outlet.
Motor enclosure with surface, hollow-fin or tube cooling
Depending on their size, the stator frame and bearing shields are from cast iron or steel. The
fan cover is made of sheet steel. The stator frame surface has cooling ribs, hollow ribs, or
tubes and mounted terminal box.
Cooling for machines with water-jacket cooling
The stator frame has a double jacket that is split and through which the cooling water flows.
As a consequence, there is a good heat dissipation and there is less risk of the suspended
solids in the water being deposited.
24
Motor version with type of explosion protection Ex t
①
Optional (depending on order)
Machine version with type of explosion protection Ex d
Standard
IEC / EN 60079-0
IEC / EN 60079-31
Standard
IEC / EN 60079‑0
IEC / EN 60079‑1
LOHER CHEMSTAR 1PS5
Operating Instructions 03/2014
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