S&C TripSaver® II
Cutout-Mounted Recloser
For enhanced lateral circuit protection
at 15 kV and 25 kV
Introducing S&C’s new TripSaver II Cutout-Mounted Recloser:
A better solution for overhead lateral
circuit protection at 15 kV and 25 kV
Conventional lateral circuit protection
requires some concessions
Over 90% of temporary faults on overhead distribution
circuits occur on laterals. Over the years, utilities have
dealt with lateral protection a couple of ways.
Feeder
breaker
Some utilities employ a “fuse blowing” philosophy:
The substation feeder breaker is properly coordinated
with the lateral fuse, so that the fuse will clear any
downstream fault within its rating . . . not the breaker.
The problem: Service to customers on the lateral
is permanently interrupted—even for a temporary
fault—as shown in Figure 1. And the utility must
deal with the high cost of service calls to replace
lateral fuses.
Lateral fuse
Temporary or permanent fault
Figure 2. “Fuse saving” philosophy.
Feeder
breaker
TripSaver II provides better lateral
protection
Lateral fuse
Temporary fault
Figure 1. “Fuse blowing” philosophy.
Other utilities employ a “fuse saving” philosophy:
The first trip of the substation feeder breaker is
intentionally miscoordinated so that the breaker
operates faster than the lateral fuse to clear a fault
downstream of the lateral fuse. The second trip of the
breaker is slower so that if the fault is still present,
the lateral fuse will operate to clear it.
The problem: All customers on the feeder
experience a momentary interruption for all faults—
as shown in Figure 2.
2
S&C’s new TripSaver II Cutout-Mounted Recloser
eliminates these problems. It’s ideally suited for
protection of laterals that experience frequent
temporary faults. This self-powered, electronically
controlled, single-phase vacuum fault interrupter is
available for installation in new or existing currentproduction (“-R10” or “-R11”) S&C or MacLean Power
Systems Type XS Fuse Cutout Mountings. A twoinsulator, branch-feeder style mounting is
also available.
TripSaver II eliminates the permanent outage which
results when the lateral fuse operates in response
to a temporary fault. Utilities using “fuse blowing” will
see an improvement in SAIFI without sacrificing MAIFI.
And TripSaver II eliminates the momentary
interruption on the feeder in instances where the
breaker is tripped to save the lateral fuse during a
temporary fault. Utilities using “fuse saving” will see
an improvement in MAIFI without sacrificing SAIFI.
TripSaver II has been tested to, and is in
compliance with, IEEE Standards C37.60-2012 and
C37.41‑2008 and IEC Standard 62271-111. TripSaver II
is manufactured in accordance with a quality system
certified to ISO 9001:2000.
As shown in the following table, TripSaver II offers
a number of advantages over traditional lateral
protective devices.
Comparison of Lateral Protective Devices
Dropout-Style
Electronic Sectionalizer
TripSaver II
Easy to install


Low initial price


Low installation cost


Feature/Benefit
Single-Phase
Hydraulic Recloser
Fault-interrupting capability


Easy to reset


Electronic control


No bypass switch required


Light weight compared to oil reclosers


No battery backup required


Fits in cutout mounting


No momentary outage on the main feeder for lateral faults


3
TripSaver II’s operating sequence
TripSaver II supports up to three reclosing operations
(four tripping operations in total) before it drops
open. A wide variety of time-current characteristic
(TCC) curves are available. The open interval between
tripping operations is five seconds.
The vacuum interrupter resets two seconds after
TripSaver II drops open. The operator can then
reclose TripSaver II into the mounting.
In instances in which a temporary fault is cleared
before TripSaver II reaches the end of its operating
sequence, TripSaver II will revert to its first TCC
curve, i.e., reset after 15 seconds have elapsed since
the last reclosing operation.
How TripSaver II works for a
temporary fault
Consider a temporary fault downstream of
TripSaver II, as shown in Figure 3.
Figure 4. TripSaver II opens.
After five seconds, TripSaver II recloses, restoring
power to customers served from the lateral
downstream, as shown in Figure 5. Since the fault
was temporary and has been cleared, further tripping
operations aren’t needed. TripSaver II reverts to its
first TCC after 15 seconds.
Feeder
breaker
TripSaver II
Temporary fault
Figure 3. Temporary fault.
Utilizing its fast TCC curve, TripSaver II opens,
as shown in Figure 4. Only customers served from
the lateral downstream of TripSaver II experience a
momentary interruption.
Figure 5. TripSaver II recloses.
How TripSaver II works for a
permanent fault
Consider a permanent fault downstream of
TripSaver II, as shown in Figure 6.
4
Feeder
breaker
TripSaver II
Permanent fault
Permanent fault
Figure 6. Permanent fault.
Figure 8. TripSaver II recloses.
As before, utilizing its fast TCC curve, TripSaver II
opens, as shown in Figure 7. Again, only customers
served from the lateral downstream of TripSaver II
experience a momentary interruption.
Since the fault is permanent, TripSaver II performs
further tripping operations per the specified
TCC curves. For utilities employing “fuse saving”
philosophy, TripSaver II drops open at the end of its
operating sequence, in the same manner as a standard
fuse cutout—providing visual indication that the
faulted lateral has been isolated, as shown
in Figure 9. The vacuum interrupter resets two
seconds after TripSaver II drops open. TripSaver II
may then be reclosed by the operator once the fault
has been repaired.
Permanent fault
Figure 7. TripSaver II opens.
Figure 9. TripSaver II drops open.
TripSaver II recloses, as shown in Figure 8.
5
Construction and Features
A
B
C
D
E
F
G
H
I
J
Birdproof-design insulator—higher insulation
characteristics than ANSI distribution-cutout
standards. Porcelain insulator shown;
composite-polymer silicone insulator also
available. NEMA Type B and S&C Extended
Mounting Brackets are available
B
A
D
Parallel-groove connector—tin-plated
cast red brass. For ease of connection,
accommodates two conductors, even of
unlike size
Attachment hooks for Loadbuster® Tool—it also
guides TripSaver II during manual closing
E
Upper contact—silver-to-silver; stainless-steel
spring provides high contact pressure
C
Bumper and Retainer—spring-loaded retainer
and bumper dampen impact on closing,
reducing the possibility of bounce-back
Vacuum fault interrupter—it is contained inside
the upper housing
Trunnion—high-strength cast bronze, silver
plated. Surfaces around trunnion bear on
broad hinge surfaces to keep TripSaver II in
alignment during closing. Its special shape
facilitates easy removal and reduces vibration
F
H
G
Lower contacts—silver-to-silver; provide dual
current path, independent of hinge pivot
Mode selector—for selecting automatic
reclosing or non-reclosing operation. In nonreclosing mode, TripSaver II will operate “oneshot-to-lockout,” suitable for use when crews
are working downstream of TripSaver II
Liquid-crystal display screen—displays
TripSaver II status. Six languages are
supported
I
J
Ice-Breaking Capability
TripSaver II is capable of dropping open under ¾-inch (20-mm)
ice formation.
Sectionalizing Option
A sectionalizing option is available for TripSaver II models rated
4 kA. If specified, TripSaver II will operate as a sectionalizer for
faults between 4 kA and 6.5 kA. TripSaver II will count the number
of operations of the source-side circuit-breaker or recloser, and drop
open after the specified number of counts. The counter resets if no
sectionalizing event is registered for 120 seconds.
6
Ratings
Complete Overhead—Pole-Top Style TripSaver II—For a new installation.
Includes TripSaver II, mounting (less mounting bracket), and connectors
50/60-Hz Ratings1
Amperes, RMS2
kV
System
Class
15
25
With Porcelain Insulator
Nom.
Max
BIL
Cont.
15
15.5
110
100
125
100
150
100
25
Interr.,
Sym.
29
Leakage Distance to
Ground Minimum,
Inches (mm)
Base
Catalog
Number
With Polymer Insulator
Leakage Distance to
Ground Minimum,
Inches (mm)
Base
Catalog
Number
4 000
8Z\x (216)
990111
14M\, (378)
990111-P
6 300
8Z\x (216)
990211
14M\, (378)
990211-P
4 000
11 (279)
990122
—
—
6 300
11 (279)
990222
—
—
4 000
17 (432)
990132a
19 (483)
990132-Pa
17 (432)
990232a
19 (483)
990232-Pa
6 300
a Applicable for protection of single-phase-to-neutral circuits only in
solidly-grounded-neutral (multi-grounded-neutral) 34.5-kV systems where
leakage distance to ground meets user’s requirement. Uses 25-kV 150-kV
BIL mounting.
1 For 50-Hz applications, specify Microprocessor Control for Application
on 50-Hz Systems, Catalog Number Suffix “-F.”
2 Minimum trip current is 5 amperes.
Complete Branch-Feeder Style TripSaver II—For a new installation.
Includes TripSaver II, mounting (less backup member and mounting hardware), and connectors
50/60-Hz Ratings1
Amperes, RMS2
kV
System
Class
15
25
Nom. Max
15
25
With Porcelain Insulator
15.5
29
BIL
Cont.
150
100
150
100
Interr.,
Sym.
Leakage Distance to
Ground Minimum,
Inches (mm)
4 000
24 (610)
6 300
4 000
6 300
With Cypoxy® Insulator
Base
Catalog
Number
Leakage Distance to
Ground Minimum,
Inches (mm)
Base
Catalog
Number
993131
24 Z\v (616)
993131-E
24 (610)
993231
24 Z\v (616)
993231-E
24 (610)
993132a
24 Z\v (616)
993132-Ea
24 (610)
993232a
24 Z\v (616)
993232-Ea
a Applicable for protection of single-phase-to-neutral circuits only in
solidly-grounded-neutral (multi-grounded-neutral) 34.5-kV systems where
leakage distance to ground meets user’s requirement. Uses 25-kV 150-kV
BIL mounting.
1 For 50-Hz applications, specify Microprocessor Control for Application
on 50-Hz Systems, Catalog Number Suffix “-F.”
2 Minimum trip current is 5 amperes.
TripSaver II Only—For retrofitting in an existing current-production (“-R10” or “-R11”) S&C or
MacLean Power Systems Type XS Fuse Cutout Mounting
50/60-Hz Ratings1
For Use with Type XS Fuse Cutout Mounting
Amperes, RMS2
kV
Basic Catalog Number
System
Class
Nom.
Max
BIL
Cont.
89811, 89021, 89031, 89071, SC15HG, 89221,
99021
15
15
15.5
110
100
89812, 89022, 89032, 89072, 89802, 89042, 89052,
89092, SC27SG, 89222, 89223, 99022, 99042
25
25
29
125 or
150
100
1 For 50-Hz applications, specify Microprocessor Control for Application
Interr.,
Sym.
Base
Catalog
Number
4 000
997111
6 300
997211
4 000
997132
6 300
997232
2 Minimum trip current is 5 amperes.
on 50-Hz Systems, Catalog Number Suffix “-F.”
7
Mounting Bracket Options—For Overhead—Pole-Top Style TripSaver II Models
Item
Add Catalog Number Suffix
S&C Extended Mounting Bracket, for crossarm, pole, or wall mounting
-B
NEMA Type B Mounting Bracket, for crossarm mounting
- C
Backup Member and Mounting Hardware Options—For Branch-Feeder Style TripSaver II Models
Item
Add Catalog Number Suffix
Backup Member with galvanized steel carriage bolts
(3 minimum thread), flat washers, lockwashers, and nuts
Two 3/8 –16  7-1/2 bolts
-D1
Four 3/8 –16  7-1/2 bolts
-D2
Two 3/8 –16  9 bolts
-D3
Four 3/8 –16  9 bolts
-D4
Sectionalizer Mode Option—For TripSaver II Models Rated 4 kA Only
Item
Add Catalog Number Suffix
Sectionalizer Mode—TripSaver II will operate as a recloser and interrupt fault currents up to
4 kA. For fault currents greater than 4 kA, up to 6.5 kA, TripSaver II will operate as a sectionalizer,
and drop open after counting the specified number of source-side circuit breaker or recloser
tripping operations. The counter resets if no sectionalizing event is registered for 120 seconds
-Snl
l Specify the number of source-side circuit breaker or recloser tripping
operations, “n” (1 to 9), that TripSaver II counts up to before dropping
open.
Time-Current Characteristic Curves
Recloser1
Fuse Link
Instantaneous
S&C
Instantaneous
Cooper Forms 4, 5, 6, FX
K
Speed
T
Speed
6K
Cooper Hydraulic Recloser
Type E
Type
4E
S&C A
S&C A
S&C A
S&C A
Inverse (U2)
S&C B
S&C B
S&C B
S&C B
S&C B
Very Inverse (U3)
S&C C
S&C C
S&C C
S&C C
S&C C
Extremely Inverse
(U4)
S&C D
S&C D
S&C D
S&C D
Short-Time Inverse
(U5)
133151
Type H
6T
S&C
101
S&C
113
S&C
133
S&C A
S&C A
10K
10T
S&C
102
S&C
115
S&C
134
S&C B
20K
20T
S&C
103
S&C
116
S&C
135
S&C C
30K
30T
S&C
104
S&C
117
S&C
137
40K
40T
S&C
105
S&C
118
S&C
138
Inverse (C1)
50K
50T
S&C
106
S&C
119
S&C
140
Very Inverse (C2)
65K
65T
S&C
107
S&C
120
S&C
141
Extremely Inverse
(C3)
80K
80T
S&C
111
S&C
131
S&C
142
Short-Time Inverse
(C5)
100K
100T
S&C
112
S&C
132
S&C
151
pliers (0.1 through 0.9 and 1 through 9) can be selected.
Type 4H,
Type L
V4H
SEL 351R/651R
113132
1 Discrete pickup currents (5 A through 200 A), and discrete time multi-
8
Type
V4L
(V4E)
101112
User Interface
Indicator appears if
TripSaver II trips and drops
open on overload
Operating
mode
LCD screen and mode selector. Springs help
guide mode selector lever to the desired position;
colored labels provide visual confirmation. “NR” mode
engaged as shown: upper label completely exposes
and lower labels align.
Vacuum interrupter status
Service Soon indicator appears when
10% vacuum interrupter life remains
The “Normal” screen shows four operating parameters.
Load Current
Last Fault Current
Operation Counter
Vacuum Interrupter Life Remaining
Internal Ambient Temperature
Sectionalizing Feature Enabled,
with Counts Setting
The “Display” screen scrolls through six additional parameters.
9
TripSaver II Styles
Base Catalog Numbers 990111 or 990211. Complete
Overhead—Pole-Top Style TripSaver II rated 15 kV nominal;
15.5 kV maximum; 110 kV BIL; 100 amperes continuous;
4 000 or 6 300 amperes interrupting, RMS, symmetrical;
8Z\x inches (216 mm) leakage distance to ground;
porcelain mounting.
Base Catalog Numbers 990122 or 990222. Complete
Overhead—Pole-Top Style TripSaver II rated 25 kV nominal;
29 kV maximum; 125 kV BIL; 100 amperes continuous; 4 000
or 6 300 amperes interrupting, RMS, symmetrical; 11 inches
(279 mm) leakage distance to ground; porcelain mounting.
Base Catalog Numbers 990132 or 990232. Complete
Overhead—Pole-Top Style TripSaver II rated 25 kV nominal;
29 kV maximum; 150 kV BIL; 100 amperes continuous; 4 000
or 6 300 amperes interrupting, RMS, symmetrical; 17 inches
(432 mm) leakage distance to ground; porcelain mounting.
Base Catalog Numbers 993131-E or 993231-E. Complete
Branch-Feeder Style TripSaver II rated 15 kV nominal;
15.5 kV maximum; 150 kV BIL; 100 amperes continuous;
4 000 or 6 300 amperes interrupting, RMS, symmetrical;
24Z\v inches (616 mm) leakage distance to ground;
Cypoxy insulators.
10
Handling TripSaver II—Overhead—Pole-Top Style Shown
TripSaver II in dropped-open position
Two seconds after TripSaver II drops
open, the vacuum interrupter resets.
Closing TripSaver II back
into mounting
TripSaver II can be readily closed
back into the mounting using a
standard hookstick equipped
with an S&C Talon™ Fuse Handling
Fitting or a distribution prong.
Opening TripSaver II with
Loadbuster ®
If the lateral circuit needs to be
de-energized, TripSaver II can be
opened using Loadbuster—the
S&C Loadbreak Tool.
11
Specifications
Voltage Ratings
Duty Cycle
15 kV
Nominal Operating Voltage (kV). . . . . . . . . . . . . . . . . . . . 15
Maximum Design Voltage (kV) . . . . . . . . . . . . . . . . . . . . 15.5
Basic Insulation Level (BIL) of mounting . . . . . . . . . . . . . 110
25 kV
Percent of Maximum
Circuit Interrupting
Rating
Minimum X/R
Ratio
Number of Unit
Operations
15-20
45-55
90-100
2
4
8
32
24
12
Total 68
Nominal Operating Voltage (kV). . . . . . . . . . . . . . . . . . . . 25
Maximum Design Voltage (kV) . . . . . . . . . . . . . . . . . . . . . 29
Basic Insulation Level (BIL) of mounting . . . . . . . . . . 125/150
Mechanical Life
Current Ratings
Minimum Number of Operations. . . . . . . . . . . . . . . . . . 2000
Weight, lbs. (kg)
15-kV (110-kV BIL). . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 (10.5)
25-kV (125-kV BIL or 150-kV BIL). . . . . . . . . . . . . . . . . 25 (11.3)
Printed in U.S.A.
Continuous Current (amperes)
All models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Symmetrical Interrupting Current (amperes)
All models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 000/6 300
Overload Capability (minutes @ 50°C)
All models
125 amperes (125%). . . . . . . . . . . . . . . . . . . . . . . . . . 45
150 amperes (150%). . . . . . . . . . . . . . . . . . . . . . . . . . 11
Half-Second Current, Symmetrical (amperes)
All models —100 amperes. . . . . . . . . . . . . . . . . . . . . . 6 300
Descriptive Bulletin
461-32
November 19, 2012©
Offices Worldwide f www.sandc.com