|
 |
|
PufferPak' SF6 RFI switches combine safe, reliable source switching with microprocessor-controlled, 3-phase vacuum interrupters. Field-proven SF6 Puffer-action technology safely cools and extinguishes the arc during switch operation. Sealed switch construction, unaffected by contamination, rodents or floods minimizes maintenance.
Load-side vacuum interrupters are armed manually with an operating handle; tripping is automatic. Manual tripping is provided by the control panel, or mechanically by moving the control handle. A fault on any phase results in three-phase tripping. True RMS current sensing is employed for overloads and fault current to give optimum accuracy.
|
|
User-Selectable Pre-Programmed Time Current Curves
Various time current curves are pre-programmed into the control module. Each module has the ability to store up to 64 different curves. These curves are selectable in two ways. In the VFD control module, curves are selected by a user-friendly keypad. A 6-way dip switch on the rear of the rotary dial control module selects the curves. Ground fault pickup and delay, and instantaneous trip values are also available on the VFD control module.
|
|
 |
|
Certified Tests and Performance
Standard production PufferPak load break switches were tested per applicable portions of IEEE, ANSI, NEMA, and other industry standards. PufferPak SF6 switches meet or exceed the applications Standards as represented below:
ANSI C37. 71 Standard for Subsurface Load Interrupting Switches.
ANSI C37.72 Standard for Padmount Load Interrupting Switches.
ANSI C37.60 Standard for Fault Interrupters.
ANSI/IEEE 386 Standard for Separable Connectors and Bushings.
IEC 265 International Standards for Load Interrupting Switches.
ASTM D-2472 Specification for Commercial Type Electrical Grade SF6.
ANSI C57.12.28 Standard for Padmount Enclosures.
Tests were conducted at recognized, independent power testing laboratories, including KEMA in Holland. Test results were verified by oscillograms and high-speed movies. As required by ANSI standards, all tests were performed in a specific sequence without any maintenance to the switch or SF6. Tests were conducted at 15.5, 27, and 38 kV levels on approximately 75 different switches including 2-, 3-, and 4-way configurations. To simulate actual service conditions, the tests were run at various SF6 gas pressures and with switches mounted in typical subsurface and padmount applications.
SRG6 and PRG6 SF6/Vacuum Resettable Fault Interrupter Switches
The Resettable Fault lnterrupter (RFI) is an electronically controlled vacuum interrupter offering three-phase short circuit protection. Available as a stand alone product or combined with the field proven PufferPak loadbreak switch, the RFI offers deadfront, compact, sealed and corrosion resistant construction. The RFI mechanism can be packaged in a Subsurface or padmount style, still offering all the benefits associated with SF6 technology.
The reliable, microprocessor controlled vacuum interrupter eliminates the need to replace or stock fusing. The RFI module is a 600 A loadbreak device with a 12kA symmetrical fault interrupting rating. The electronics are self powered, user-friendly devices offering the ability to field-adjust characteristics and settings.
Resettable Fault Interrupter switches are furnished with manual operators, visual position indicators and standard accessories for normal installation. Units are available in a variety of circuit configurations, tank sizes and arrangements depending upon application.
Popular options include: remote or automatic switching, visible break (PufferPak only), operational interlocks, and parking stands.
Other Designs and Applications
PufferPak vault, subsurface and padmount switching products are constantly changing. Please consult the factory for the latest information and catalog supplements.
|
|
| Switch Configuration |
Catalog Number |
Model Number |
Max kV |
Width* Dim. Inches |
Height* Dim. Inches |
Wt.*
Lbs. approx. |
Download Spec |
2 WAY
 |
PRG6-22-15 |
6T |
15.5 |
41 |
45 |
725 |
 |
| PRG6-22-27 |
6T |
27 |
3 WAY
 |
PRG6-33-15 |
6T6 |
15.5 |
53 |
45 |
925 |
|
| PRG6-33-27 |
6T6 |
27 |
4 WAY
 |
PRG6-44-15 |
6TT6 |
15.5 |
65 |
45 |
1175 |
|
| PRG6-44-27 |
6TT6 |
27 |
5 WAY
 |
PRG6-55-15 |
6TTT6 |
15.5 |
65 |
45 |
1175 |
|
| PRG6-55-27 |
6TTT6 |
27 |
Note: Consult factory for other configurations.
Replace "6" with "2" in model number for 200A deepwell bushings.
Replace "T" with "S" in model number for 600A apparatus bushings on RFI ways.
|
|
|
|
