GENERATOR MATERIAL SOLUTIONS
THE GUND COMPANY IS A MANUFACTURER AND FABRICATOR OF ENGINEERED INSULATION MATERIAL SOLUTIONS FOR POWER GENERATION EQUIPMENT, INCLUDING STEAM, HYDRO, AND WIND GENERATORS.
In generators, the insulation material components are specific to their application and location within the generator. The main sections of the generator are:
- Rotor:
The rotor is the moving component of the generator that provides the magnetic field. Its rotation is provided by the turbine, which can be powered by steam, gas, water, or wind.
- Stator:
The stator is the stationary part of a generator system. It takes the rotating magnetic field produced by the rotor and outputs an electric current.
- Exciters:
The excitation system supplies the DC current required for the rotor to produce a magnetic field. Excitation systems can be brushed or brushless and have some of their components mounted to the rotor shaft.
- Accessories and Auxiliary Components:
Generators have many auxiliary systems to support their operation that require specialty parts, as well as accessories to assist with repair. Examples include rotor support shoes, high voltage bushings, gaskets, and various installation tooling.
TURBO GENERATORS
THE GUND COMPANY FABRICATES ALL INSULATION AND METAL COMPONENTS NEEDED TO REPAIR ANY GENERATOR AND CAN MEET YOUR CRITICAL DELIVERY SCHEDULE.
When it comes to material selection and fabrication precision, The Gund Company has decades of experience assisting customers with our extensive engineering capabilities. We can reverse engineer components, provide material recommendations, and develop new materials tailored to your needs. We are a one-stop-shop that can supply every component required to complete a generator rewind in one kit, and we understand the tight timelines required for a repair to be successful.
We have standard processes for project management and can begin shipping partial amounts of slot liners, turn insulation, or stator wedges in as little as 3 days from receipt of drawings. Our logistics managers and customer service representatives work daily with expedited deliveries and deliveries to the site to ensure that our customers get their parts as soon as they need them. Coupled with our rigorous quality assurance program and in-process inspections, The Gund Company provides our customers with the highest-quality components at speeds that keep projects on schedule. Contact a generator applications engineer today to request a copy of our generator repair checklist or schedule a lunch-and-learn event for your team.
TURBINE GENERATOR INSULATION:
| Common Turbo Generator Insulation Materials | ||
|---|---|---|
| Description | Material | Application |
| 155°C Glass Epoxy (G11) | NEMA G-11 | Rotor Blocking, Slot Armor, Stator Wedges, Subslot Covers, Creepage Blocks, Rotor Shoes, Bearing Insulation, Bore Tubes, Bore Seals, Collector Sleeves, Terminal Insulation, Hydrogen Seal Insulation, Filler Strips |
| 180°C Glass Epoxy (G12, G11H) | NEMA G-12 (G-11H) | Rotor Blocking, Slot Armor, Stator Wedges, Subslot Covers, Creepage Blocks, Bore Seals, Filler Strips |
| Formable 155°C Glass Epoxy (G11) | NEMA G-11 (Formable) | Retaining Ring Insulation |
| Formable 155°C Glass Epoxy | NEMA G-11 (PTFE Coated) | Retaining Ring Insulation |
| 155°C Glass Polyester | APO-1 (NEMA GPO-1) | Rotor Blocking, Large Stator Rings, Stator Wedges, Filler Strips |
| 130°C Low Shrink Canvas Phenolic (LSBC) | Low Shrink Black Canvas Phenolic | Stator Wedges, Stator Blocking, Rotor Blocking |
| 130°C Post-Bake Canvas Phenolic (PBBC) | Post Bake Black Canvas | Stator Wedges, Stator Blocking, Gunstocks, Rotor Blocking |
| Semi-Conductive Glass Polyester | C-109 Semi-Conductive | Filler Strips |
| Semi-Conductive Glass Epoxy | C-209 Semi-Conductive | Filler Strips |
| Semi-Conductive Side Ripple Spring | Side Ripple Spring | Filler Strips |
| Top Ripple Spring | Top Ripple Spring | Filler Strips |
| Turn Insulation (Glass Epoxy) | RotoGuard® EG | Turn Insulation, Stator Core Packings |
| Turn Insulation (TIB Adhesive Coated) | RotoGuard® TIB | Turn Insulation |
| Turn Insulation (Nomex with TIB Adhesive) | Epoxy Coated Nomex® 410 Aramid Paper | Turn Insulation |
| Aramid Paper (Nomex) | G-Flex Meta-Aramid Paper YT510 | Slot Armor, Turn Insulation, Retaining Ring Insulation |
| Slot Armor Laminates | Slot Liner Selection Guide | Slot Armor |
| Bulk Molding Compound | BMC/DMC PD20 For Standoff Insulators | End Caps |
The Gund Company also offers a wide variety of elastomeric materials for all your O-ring and gasket needs.
HYDRO GENERATORS
THE GUND COMPANY DELIVERS HIGH QUALITY INSULATION AND METAL COMPONENTS THAT MEET YOUR CRITICAL DELIVERY SCHEDULE.
Our engineers and customer service representatives are always ready to work together with you to manage large and small projects. We share our decades of experience with you through material recommendations, quick lead times, and ultra-fast responsiveness. Our team is always ready to go the extra mile to ensure you have what you need when you need it.
HYDRO GENERATOR INSULATION:
| Common Hydro Generator Insulation Materials | ||
|---|---|---|
| Description | Material | Application |
| 130°C Glass Epoxy | NEMA G-10 | Stator Wedges, Pole Collars, Pole Blocking, Stator Blocking |
| 155°C Glass Epoxy | NEMA G-11 | Stator Wedges, Pole Collars, Pole Blocking, Stator Blocking |
| 180°C Glass Epoxy | NEMA G-12 (G-11H) | Stator Wedges, Pole Collars, Pole Blocking, Stator Blocking |
| 130°C Glass Polyester (GPO-3) | NEMA GPO-3: Sheet / Angle / Channel | Pole Collars, Pole Blocking, Stator Blocking |
| 155°C Glass Polyester (GPO-1) | APO-1 (NEMA GPO-1) | Pole Collars, Pole Blocking, Stator Blocking |
| Turn Insulation (Nomex with TIB Adhesive) | Epoxy Coated Nomex® 410 Aramid Paper | Turn Insulation |
| Aramid Paper (Nomex) | Aramid Paper | Turn Insulation |
| Semi-Conductive Glass Polyester | C-109 Semi-Conductive | Filler Strips |
| Semi-Conductive Glass Epoxy | C-209 Semi-Conductive | Filler Strips |
| Semi-Conductive Side Ripple Spring | Side Ripple Spring | Filler Strips |
| Top Ripple Spring | Top Ripple Spring | Filler Strips |
| Bulk Molding Compound | BMC/DMC PD20 For Standoff Insulators | End Caps |
| Canvas Phenolic | NEMA C, CE, LE – Phenolic Resin Cotton Cloth | Main Lead Blocking, Stator Blocking |
The Gund Company also offers a wide variety of elastomeric materials for all your O-ring and gasket needs.
WIND GENERATORS
THE GUND COMPANY IS A MANUFACTURER AND FABRICATOR OF ENGINEERED MATERIAL SOLUTIONS FOR WIND GENERATORS.
We fabricate all types of stator wedges, including magnetic wedges. We provide semi-conductive side fillers, side and top ripple springs, and center and bottom fillers. Our knowledge of materials and years of application experience allow us to serve the wind generator industry with unparalleled service.
WIND GENERATOR INSULATION COMPONENTS:
- Magnetic & Non-Magnetic Wedges
- Magnetic & Non-Magnetic Topsticks
- Barriers
- Insulators
- Filler Strips
- Slit Coil Insulation
- Formed Slot Liners
- Flexible Papers & Films
"GEN SET" & SPECIALTY GENERATORS
THE GUND COMPANY IS A MANUFACTURER AND FABRICATOR OF ENGINEERED MATERIAL SOLUTIONS FOR GEN SETS AND SPECIALTY GENERATORS.
We fabricate all types of stator wedges, side fillers, and slot insulation. Our knowledge of materials and years of application experience allow us to serve the generator industry with unparalleled service.
- Wedges
- Fillers
- Top Sticks
- End Caps
- Barriers
- Insulators
- Gaskets
- O-Rings
- Washers
- Baffles
- Impregnated Roving
- PSA Tapes & Tie Cords
RotoGuard Insulation Protection Packages are a family of products that The Gund Company has developed to meet our customers’ specifications. Our aerospace manufacturing process enables us to provide high-quality slot liner and turn insulation that meets or exceeds OEM specifications. The result is a series of high-quality generator insulation products that save installation and schedule time. Visit our RotoGuard® Insulation Protection Page to Learn More.