S C 761-80 Alduti Rupter Switches Instruction Manual
- June 12, 2024
- S C
Table of Contents
761-80 Alduti Rupter Switches
Instruction Manual
Selecting Standard
Mounting Arrangements
Alduti-Rupter® Switches
Outdoor Distribution (14.4 kV through 69 kV)
761-80 Alduti Rupter Switches
Three-pole Alduti-Rupter Switches for outdoor distribution are offered in an
unequalled variety of standard mounting arrangements—a selection of
arrangements that cuts engineering costs as well as lead time.
Note: Vertical-break integer, side-break integer, and double-break
integer Alduti-Rupter Switches, unlike other styles of three-pole Alduti-
Rupter Switches, consist of three switch poles factory-assembled on a single
base. Integer styles are offered in a variety of basic mounting arrangements.
Certain statements in this document do not apply to the integer styles; such
statements are indicated by footnote “●” in the main text.
The selector charts that follow illustrate 96 standard mounting arrangements,
classified by:
- Style of switch—side-break integer, side-break, vertical-break integer, vertical-break, double-break, and double-break integer
- Type of mounting—single-pole, two-pole, structure, or pedestal
- Type of operating mechanism—rotating or reciprocating Many advantages accrue from using one of the standard mounting arrangements:
No Design Delays; No Ordering Delays
Switches can be ordered immediately, and you can complete your line or station
layout, plus actual design work, from erection drawings (EDs) that are
immediately available. No other drawings are required from S&C to adapt the
switches to the majority of applications.
Reduced Shipping
Time Shipping time is greatly reduced because there is no delay for custom
engineering, customer approval, or time-consuming fabrication of custom parts.
Stocking Switches for Immediate Use
Standard mounting arrangements make it possible to buy and warehouse a
quantity of Alduti-Rupter Switches with operating mechanisms preferred
arrangements for use in future installations. A switch can be taken from stock
at any time and installed.
Erection Drawings Immediately Available
Each standard mounting arrangement in the selector charts is identified with
an ED number; this number indicates the erection drawing corresponding to the
mounting arrangement. EDs are printed in a legible, double-page, “D”-size
format folded to an “A” size for convenient filing. See Figure 1. They are
available at no charge in as many copies as required; just ask the local S&C
Sales Office for the ED numbers needed.
Each erection drawing is complete with detailed installation data, including
an outline drawing of the mounting arrangement, base details, operating-
mechanism component details, a bill of materials, installation notes and
illustrations, and recommended clearances.
Figure 1.
Typical erection drawing, reduced from full “D” size.
Standard Mounting Arrangements
When a standard mounting arrangement is specified, the shipment will include:
- Three switch poles or, in the case of an integer style Alduti-Rupter Switch, a three-pole switch, complete with interphase drive, factory-assembled on a single base
- Mounting pedestal, if ordered (vertical-break and double break integer style Alduti-Rupter Switches for pedestal mounting only)
- The appropriate number of sections of vertical operating pipe and interphase pipe (Refer to Table 1 for vertical operating pipe included with each standard mounting arrangement.)
- The appropriate set of operating-mechanism components; e.g., handle, rod guides, couplings, bell crank assembly, etc.
- The appropriate detailed erection drawing
- Complete installation instructions
What About Specials?
Departures from standard mounting arrangements are easily handled. They fall
into three categories:
- Standard minor modifications of standard mounting arrangements
- Special minor modifications of standard mounting arrangements●
- Special mounting arrangements
Standard Minor Modifications
Standard minor modifications are those so frequently encountered they are
included on S&C’s basic erection drawings. Standard minor modification(s) may
be specified by adding the following suffixes to the standard mounting
arrangement ED number:
-S1 A 25∕8-inch diameter tubular fiberglass insulating section in vertical operating shaft
-S2 One Cryopexy™ Insulator unit in vertical operating shaft
-S3 An insulated interphase operating shaft and one fiberglass insulating section in a vertical operating shaft
-S4 An insulated interphase operating shaft and one Cryopexy Insulator unit in vertical operating shaft –
S5 A 2-inch NPS pipe, which is required for rotating type operating mechanism
when the vertical shaft exceeds three 10-foot-4-inch (315-cm) sections (four
10-foot-4-inch (315-cm) sections for side-break heavy-duty switches)
-S5A One extra 2-inch NPS pipe section
-S5B Two extra 2-inch NPS pipe sections
-S5C Three extra 2-inch NPS pipe sections
-S6 A key interlock—single lock for “locked-open” or “locked-closed” application
-S6L Provision for a key interlock (lock supplied by customer)
-S7 An auxiliary contact switch (4NO, 4NC contacts)
● See Note on page 1.
Table 1. Standard Vertical Operating Pipe Included with Standard Mounting
Arrangements
| Alduti-Rupter Switch | For Standard Mounting Arrangements Having |
|---|---|
| Style | Rating, kV |
Rotating-Type Operating Mechanism
Side-Break Integer| All| (3) 10-foot- 4-inch (315-cm) sections of 1¼-inch NPS|
(3) 10-foot- 4-inch (315-cm) sections of 1½-inch NPS
Side-Break Heavy-Duty| All| (3) 10-foot- 4-inch (315-cm) sections of 1¼-inch
NPS| (3) 10-foot- 4-inch (315-cm) sections of 1½-inch NPS
Side-Break Standard-Duty| All| (3) 10-foot- 4-inch (315-cm)sections of 1¼-inch
NPS| (3) 10-foot- 4-inch (315-cm) sections of 1½-inch NPS
Vertical-Break Integer| All| (3) 10-foot- 4-inch (315-cm) sections of 1¼-inch
NPS●| (3) 10-foot- 4-inch (315-cm) sections of 1½-inch NPS
Vertical-Break| All| (3) 10-foot- 4-inch (315-cm) sections of 1¼-inch NPS| (3)
10-foot- 4-inch (315-cm) sections of 1½-inch NPS
Double-Break| 34.5 & 46| (3) 10-foot- 4-inch (315-cm) sections of 1¼-inch NPS|
(3) 10-foot- 4-inch (315-cm) sections of 1½-inch NPS
69| (3) 10-foot- 4-inch (315-cm) sections of 1¼-inch NPS| (3) 10-foot- 4-inch
(315-cm) sections of 2-inch NPS
Double-Break Integer| All| (3) 10-foot- 4-inch (315-cm) sections of 1¼-inch
NPS| (3) 10-foot- 4-inch (315-cm) sections of 2-inch NPS■
● Switches in the pedestal mounting configuration include (1) 10-foot-4-inch
(315-cm) section.
■ Switches in the pedestal mounting configuration include (1) 10-foot-4-inch
(315-cm) section and (1) 5-foot-2-inch (157-cm) section.
-S8 Provision for power operation of a pole-mounted switch by a Type AS-10 Switch Operator (for reciprocating-type operating mechanism), a Type AS-1A Switch Operator (for rotating-type operating mechanism), or an LS-2 Switch Operator (for 69-kV switches with rotating-type mechanism)
-S9 Provision for power operation of steel-structure or pedestal-mounted switch by a Type AS-10 Switch Operator (for reciprocating-type operating mechanism), a Type AS-1A Switch Operator (for rotating-type operating mechanism), or LS-2 Switch Operator (for 69-kV switches with rotating type mechanism)
-S16 Provision for power operation of switches by a 6801M Automatic Switch Operator—rotating or reciprocating
-V1 One extra 1¼-inch NPS pipe section (for reciprocating-type operating mechanism)
-V2 Two extra 1¼-inch NPS pipe sections (for reciprocating-type operating mechanism)
Special Minor Modifications●
Special minor modifications of standard mounting arrangements are those which
include such departures as special base drillings or special mounting brackets
for operating mechanism components. For this category of “special,” S&C will
prepare a custom erection drawing based on the standard mounting arrangement
erection drawing.
Special Mounting Arrangements●
Special mounting arrangements are those which include complete departures from
the standard mounting arrangements and are usually brought about by S&C being
asked to customize an Alduti-Rupter switch to fit the user’s structure. Custom
erection drawings will be prepared as required.
● See “Note” at top left of page 1.
Table 2. Standard Minor Modifications–Shaded cells denote the option is
available for that style of switch
- The standard minor modifications for this style of switch are available on a selective basis only, as indicated in S&C Specification Bulletin 761-31.
- The standard minor modifications for this style of switch are available on a selective basis only. Consult the nearest S&C Sales Office.
- For rotating-type EDs only.
- For reciprocating-type EDs only.
Guide to Using the Selector Charts
Alduti-Rupter Switches for outdoor distribution are offered in side-break integer, side-break, vertical-break integer, vertical-break, double-break, and double-break integer styles. Each is fully described in S&C Specification Bulletin 761-31, which should be reviewed before using the selector charts on the following pages. These charts are arranged by style of switch, as follows:
- Side-break integer style switches: page 5
- Side-break heavy-duty style switches: pages 6-8
- Side-break standard-duty style switches: page 6
- Vertical-break integer style switches: pages 9-10
- Vertical-break style switches: pages 11-13
- Double-break style switches: pages 14-16
- Double-break integer style switches: pages 17-18
For each switch style, mountings are shown, as available, for installation on
single poles, two poles, or a structure, whether of wood or steel—or, for
certain styles, on a pedestal. Mounting provisions are shown for both rotating
and reciprocating-type operating mechanisms.
Each drawing in the charts represents schematically the corresponding standard
mounting arrangement erection drawing. The ED number indicated should be used
in ordering the required erection drawing. The drawing supplied may be
supplemented with the letter “R” followed by a digit, indicating the most
recent modification of construction details.
Side-Break Integer Style ★☆
For Mounting on a Single Pole—Wood, Steel, Concrete, or Composite
Upright Mounting Configuration
| Vertical Mounting Configuration
---|---
Rotating
|
Reciprocating
| 
Tiered Outboard Mounting Configuration
|
Reciprocating|
|
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
☆ Applicable for side-break integer style switches with steel or insulated
bases.
● To be used with counterclockwise-opening switch.
■ For switches rated 14.4 kV and 25 kV.
▲ For switches rated 25/34.5 kV and 34.5 kV.
◆ To be used with clockwise-opening switch.
Side-Break Heavy-Duty Style and Standard-Duty Styles★
For Mounting on a Single Pole—Wood, Steel, Concrete, or Composite
Upright Mounting Configuration
|
Vertical Mounting Configuration
---|---
Rotating
|
Rotating
| 
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
● To be used with counterclockwise-opening switch.
■ For switches rated 14.4 kV and 25 kV.
▲ For switches rated 34.5 kV.
◆ For side-break standard-duty style switches, for mounting on a single
pole—wood or steel.
Side-Break Heavy-Duty Styles★
For Mounting on Two Poles—Wood, Steel, Concrete, or Composite
Vertical Mounting Configuration ①
|
Vertical Mounting Configuration ①
---|---
Rotating
|
Reciprocating
| 
| Upright Mounting Configuration ②
Rotating
- For side-break heavy-duty style switches, for mounting on two poles—wood or steel.
- For side-break standard-duty style switches, for mounting on a single pole—wood or steel.
★ Refer to Specification Bulletin 761-31 for available voltage and current ratings.
● To be used with clockwise-opening switch.
■ For switches rated 14.4 kV and 25 kV.
▲ To be used with counterclockwise-opening switch.
◆ For switches rated 34.5 kV.
Side-Break Heavy-Duty Style—Continued★
For Mounting on a Structure
Upright Mounting Configuration
Rotating—Direct or Single Offset
|
Rotating—Double Offset
|
Vertical Mounting Configuration
|
Rotating
|
|
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
● To be used with counterclockwise-opening switch.
■ For switches rated 14.4 kV and 25 kV.
▲ For switches rated 34.5 kV.
◆ To be used with clockwise-opening switch.
Vertical-Break Integer Style★
For Mounting on a Single Pole—Wood, Steel, Concrete, or Composite
Pole-Top Mounting Configuration| Upright Mounting Configuration|
Vertical Mounting Configuration
---|---|---
Reciprocating| Reciprocating| Reciprocating
|
| 
Tiered Outboard Mounting Configuration
|
Triangular Mounting Configuration
|
Rotating
|
Reciprocating
|
|
|
Vertical-Break Integer Style—Continue★
For Pedestal Mounting
Pedestal Mounting Configuration
Reciprocating
★ Refer to Specification Bulletin 761-31 for available voltage and current ratings.
Vertical-Break Style★
For Mounting on a Single Pole—Wood, Steel, Concrete, or Composite
Vertical Mounting Configuration
Rotating
|
Reciprocating
| 
Upright Mounting Configuration
Rotating
|
Reciprocating
|
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
● For switches rated 14.4 kV (600 A and 1200 A) and 25 kV (600 A and 1200 A).
Vertical-Break Style—Continued★
For Mounting on Two Poles—Wood, Steel, Concrete, or Composite
Vertical Mounting Configuration
Rotating| Reciprocating
|
Upright Mounting Configuration|
Rotating
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
● For switches rated 14.4 kV (600 A and 1200 A) and 25 kV (600 A and 1200 A).
Vertical-Break Style—Continued★
For Mounting on a Structure
Upright Mounting Configuration
Rotating—Direct or Single Offset| Rotating—Double Offset|
Reciprocating
| 
| 
Vertical Mounting Configuration
Rotating|
Reciprocating
|
| 
|
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
● For switches rated 14.4 kV (2400 A), 25/34.5 kV and 34.5 kV.
■ For switches rated 14.4 kV (600 A and 1200 A) and 25 kV (600 A and 1200 A).
Double-Break Style★☆
For Mounting on a Single Pole—Wood, Steel, Concrete, or Composite
Vertical Mounting Configuration
| Upright Mounting Configuration
---|---
Rotating|
Rotating
| 
Tiered Upright Mounting Configuration
| Tiered Outboard Mounting Configuration
Rotating|
Reciprocating
| 
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
☆ For double-break switches with “-G” option (ground switches), consult the
nearest S&C Sales Office for ED.
● For switches rated 34.5 kV and 46 kV.
■ For switches rated 69 kV only.
Double-Break Style—Continued★☆
For Mounting on Two Poles—Wood, Steel, Concrete, or Composite
Vertical Mounting Configuration
Rotating|
Reciprocating
| 
Upright Mounting Configuration
| Inverted Mounting Configuration
Rotating|
Rotating
| 
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
☆ For double-break switches with “-G” option (ground switches), consult the
nearest S&C Sales Office for ED.
● For switches rated 34.5 kV and 46 kV.
■ For switches rated 69 kV only.
Double-Break Style—Continued★☆
For Mounting on a Structure
Vertical Mounting Configuration
Rotating|
Reciprocating
| 
Upright Mounting Configuration
Rotating—Direct or Single Offset
|
Rotating—Double Offset
| 
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
☆ For double-break switches with -G option (ground switches), consult the
nearest S&C Sales Office for ED.
● For switches rated 34.5 kV and 46 kV.
■ For switches rated 69 kV only.
Double-Break Integer Style★
For Mounting on a Single Pole—Wood, Steel, Concrete, or Composite
Upright Mounting Configuration
| Vertical Mounting Configuration
---|---
Rotating|
Reciprocating
| 
Tiered-Outboard Mounting Configuration
| Pole-Top Mounting Configuration
Reciprocating|
Rotating
| 
★ Refer to Specification Bulletin 761-31 for available voltage and current
ratings.
Double-Break Integer Style—Continued★
For Pedestal Mounting
Pedestal Mounting Configuration
Rotating
★ Refer to Specification Bulletin 761-31 for available voltage and current ratings.