Product Guide

91
All pictures shown in this document are for illustration purpose only. Actual product features may vary due to product enhancement without notice.
PRODUCT GUIDE
–
GPW
Series
Protection Level Specifications:
Protection level: STANDARD
The Standard protection level is referred to a generator which has the sole impregnation resin applied
to all the active parts. It should be noted that this level is standard on the Mecc Alte ECP3 generator
series: voltages from turn to turn in this series are never dangerous for the insulation life, resulting in
no need to apply any additional protection varnish.
Exciter Stator: resin
Main Stator: resin
Exciter Rotor: resin
Main Rotor: resin
Protection level: STANDARD +
With the Standard + protection system in addiction to the usual impregnation resin, the stator exciter
is protected with a further layer of grey varnish EG43. Stator exciter is protected because it is the first
active part that is cooled from the air cooling flux. The ECP 28, and ECP 32 series are built with this
protection level as a standard.
Exciter Stator: resin + EG43
Main Stator: resin
Exciter Rotor: resin
Main Rotor: resin
Protection level: GREY
With the grey protection level, not only the exciter stator is coated with the EG43 but
also the main power stator. This protection level, which is available as an option on
some families and as a standard on some others, is the standard for the marine and
nearly all the most demanding application. Main and exciter stator grey EG43
coating is usually sufficient to protect the windings, as all the rotating machine parts
are subjected to much lower voltages and are cleaned centrifugally from the
moisture and contaminating particles that could corrode the copper enamel. This
level is the Mecc Alte standard for ECP 34, ECO 38, ECO 40, ECO 43 and ECO 46
families.
Exciter Stator: resin + EG43
Main Stator: resin + EG43
Exciter Rotor: resin
Main Rotor: resin
Protection level: GREY+
The Grey+ protection level is available as an option on the whole industrial range.
With this protection level, the main stator is coated with the grey EG43 varnish and
the exciter stator is upgraded to have the black severe environment protection. This
acts as a physical barrier to moisture particles and chemical substances on this part.
Exciter Stator: resin + black compound
Main Stator: resin + EG43
Exciter Rotor: resin
Main Rotor: resin