Glass Transmission Insulators
For many customers and applications, toughened glass provides a high level of performance and long-term security for high voltage insulation.
MacLean is pleased to be able to provide our customers with toughened glass insulators from stock held at our South Carolina factory. These products have been in service since 1957 with installations in a broad range of operating conditions with more than 300 utilities worldwide at voltages from 15 to 1150kV AC.
| Catalog Number | ANSI Class | Coupling Type | Min. Mechanical Failing Load | Proof Routine Test Mech. Load | Shell Diameter (in/mm) | Coupling Length (in/mm) | Leakage Distance (in/mm) | Dry Flashover kV | Wet Flashover kV | CIFO+ (kV) | CIFO- (kV) | Puncture Voltage kV | RIV Test Voltage kV | Max. RIV at 1 MHz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MG5211Z | 52-11 | K | 50,000 | 25,000 | 11.0 / 280 | 6.14 / 156 | 16.9 / 428 | 80 | 50 | 140 | 140 | 130 | 10 | 50 |
| MG523Z | 52-3 | B | 22,000 | 11,000 | 10.0 / 255 | 5.75 / 146 | 12.6 / 320 | 80 | 50 | 125 | 130 | 130 | 10 | 50 |
| MG525Z | 52-5 | J | 30,000 | 15,000 | 10.0 / 255 | 5.75 / 146 | 12.6 / 320 | 80 | 50 | 125 | 130 | 130 | 10 | 50 |
| MG528Z | 52-8 | K | 40,000 | 20,000 | 11.0 / 260 | 5.75 / 146 | 15.2 / 385 | 80 | 50 | 125 | 130 | 130 | 10 | 50 |
| MG525ZF | 52-5 | J | 30,000 | 15,000 | 10.0 / 255 | 5.75 / 146 | 17.5 / 445 | 100 | 60 | 140 | 140 | 130 | 10 | 50 |
| MG525ZA | 52-5 | J | 30,000 | 15,000 | 15.0 / 380 | 5.75 / 146 | 14.4 / 365 | 80 | 50 | 125 | 125 | 130 | 10 | 50 |