Coral®Rich-Cured™ is our bestselling system for bars and some coils. It is a standard Resin Rich (stage B) system for coils with insulation class F. The main characteristic is that the coils are fully cured and pressed in the slot portions, and the overhangs using special fixtures. This systems ensures no air voids.

This system is ideal for Power and Hydro generators using all types of bars.

Advantages and special features:

• Resin Rich is a system that is highly trusted and used for many years.
• Resin Rich is widely used for motor and generator rewinding as well as for new machines.
• Resin Rich coils can be fully tested before they are inserted.
• Resin Rich does not need Drying, Impregnation and curing after insertion, so it is easy to use in repairs either in the field or at our customer’s shop.
• Resin Rich technology, in general, allows easier removal and replacement of coils than global VPI.

Construction of insulation Materials

Conductor covering :

• Enamel with Dalgass
• Enamel with Fiberglass

Mica tape and subsequent materials:

• Stack consolidation tape
• Mica putty
• Glassoflex sheet
• Glass mica tape
• Corona shield tape
• Stress grading tape
• Finishing tape / Paint.

Standard and special testing alternatives

• Interturn test
• Surge comparison test
• Inter element test.
• Coil resistance measurement
• IR test IEEE 43:2000
• AC HV Test IS 4722:2001
• Tan delta and Tip up test – IEEE 286:2000
• Surface resistance measurement
• Visual corona test
• Impulse test

TYPE TEST:

• Partial Discharge measurement IEEE 1434 : 2014
• Voltage Endurance test IEEE 1043 : 1996 & IEEE 1553 : 2002
• Thermal Cycling test IEEE 1310 : 2012.