S&C TripSaver II. Cutout-Mounted Recloser. For enhanced lateral circuit protection at 15 kv and 25 kv

Transcription

1 S&C TripSaver II Cutout-Mounted Recloser For enhanced lateral circuit protection at 15 kv and 25 kv

2 Introducing S&C s 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 transient faults on overhead distribution circuits occur on laterals. Over the years, utilities have dealt with lateral protection a couple of ways. 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 experiences sustained interruption even for a transient fault as shown in Figure 1. And the utility must deal with the high cost of service calls to replace lateral fuses. Feeder breaker Transient or persistent fault Lateral fuse Feeder breaker Transient fault Figure 1. Fuse blowing philosophy. Lateral fuse 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. Figure 2. Fuse saving philosophy. TripSaver II provides better lateral protection S&C s TripSaver II Cutout-Mounted Recloser eliminates these problems. It s ideally suited for protection of laterals that experience frequent transient 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 sustained interruption which results when the lateral fuse operates in response to a transient 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 transient fault. Utilities using fuse saving will see an improvement in MAIFI without sacrificing SAIFI. 2

3 TripSaver II has been tested to, and is in compliance with, IEEE Standards C and C and IEC Standard 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 Feature/Benefit Single-Phase Hydraulic Recloser Dropout-Style Electronic Sectionalizer TripSaver II Easy to install Low initial price Low installation cost 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 interruption on the main feeder for lateral faults 3

4 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 duration of the open interval between tripping operations is user configurable. It has a range of from 0.5 seconds to 5 seconds. The vacuum interrupter resets two seconds after TripSaver II drops open. The operator can then reclose TripSaver II into the mounting after the repair has been made. In instances in which a transient fault is cleared before TripSaver II reaches the end of its operating sequence, TripSaver II will revert to its first TCC curve, after its sequence reset timer stops. The sequence reset time is also user configurable, and it has a range from 0.5 seconds to 1000 seconds. How TripSaver II works for a transient fault Consider a transient fault downstream of TripSaver II, as shown in Figure 3. Figure 4. TripSaver II opens. After the open interval, TripSaver II recloses, restoring power to customers served from the lateral downstream, as shown in Figure 5. Since the fault was transient and has been cleared, further tripping operations aren t needed. TripSaver II reverts to its first TCC after the sequence reset time. Feeder breaker TripSaver II Transient fault Figure 3. Transient 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 persistent fault Consider a persistent fault downstream of TripSaver II, as shown in Figure 6. 4

5 Feeder breaker TripSaver II Persistent fault Persistent fault Figure 6. Persistent 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 persistent, 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 manually closed back into the mounting by the operator once the fault has been repaired. Persistent fault Figure 7. TripSaver II opens. Figure 9. TripSaver II drops open. TripSaver II recloses, as shown in Figure 8. 5

6 Construction and Features B A Birdproof-design insulator higher insulation characteristics than ANSI distribution-cutout standards. Porcelain insulator shown; compositepolymer silicone insulator also available. NEMA Type B and S&C Extended Mounting Brackets are available D A B Parallel-groove connector tin-plated cast red brass. For ease of connection, accommodates two conductors, even of unlike size C E C Attachment hooks for Loadbuster Tool it also guides TripSaver II during manual closing D E Upper contact silver-to-silver; stainless-steel spring provides high contact pressure Bumper and Retainer spring-loaded retainer and bumper dampen impact on closing, reducing the possibility of bounce-back F F G 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 G H H I Lower contacts silver-to-silver; provide dual current path, independent of hinge pivot Mode selector lever for selecting automatic reclosing or non-reclosing operation. In non-reclosing mode, TripSaver II will operate one-shot-to-lockout, suitable for use when crews are working downstream of TripSaver II I J Liquid-crystal display screen displays TripSaver II status. Six languages are supported. Display items are user configurable. J Ice-Breaking Capability TripSaver II is capable of dropping open under ¾-inch (20-mm) ice formation. Sectionalizing Feature TripSaver II features a sectionalizing mode in both 4-kA and 6.3-kA-rated models. When enabled, TripSaver II will operate as a sectionalizer over a userspecified range of fault currents when the source-side circuit breaker or recloser trips faster than TripSaver II. It counts the number of operations of the sourceside circuit breaker or recloser, and drops open after a user-specified number of counts. Inrush Restrain Feature TripSaver II has a novel inrush-restraint feature, always on, which measures second-harmonic current to distinguish fault current from inrush current. If inrush current is detected, TripSaver II will not trip. The inrush restraint feature facilitates lower minimum pickup currents down to 5 A. 6

7 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 With Porcelain Insulator With Polymer Insulator System Class kv Nom. Max BIL Cont. Amperes, RMS2 Interr., Sym. Leakage Distance to Ground Minimum, Inches (mm) Base Catalog Number Leakage Distance to Ground Minimum, Inches (mm) Base Catalog Number For 50-Hz applications, specify Microprocessor Control for Application on 50-Hz Systems, Catalog Number Suffix -F. 2 Minimum trip current is 5 amperes ½ (216) ⅞ (378) P ½ (216) ⅞ (378) P (279) (279) (432) (483) P (432) (483) P 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. Complete Branch-Feeder Style TripSaver II For a new installation. Includes TripSaver II, mounting (less backup member and mounting hardware), and connectors System Class 50/60-Hz Ratings1 With Porcelain Insulator With Cypoxy Insulator kv Amperes, RMS2 Leakage Distance to Ground Minimum, Interr., Nom. Max BIL Cont. Inches (mm) Sym For 50-Hz applications, specify Microprocessor Control for Application on 50-Hz Systems, Catalog Number Suffix -F. 2 Minimum trip current is 5 amperes. Base Catalog Number Leakage Distance to Ground Minimum, Inches (mm) Base Catalog Number (610) ¼ (616) E (610) ¼ (616) E (610) ¼ (616) E (610) ¼ (616) E 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. TripSaver II Only For retrofitting in an existing current-production ( -R10 or -R11 ) S&C or MacLean Power Systems Type XS Fuse Cutout Mounting For Use with Type XS Fuse Cutout Mounting 50/60-Hz Ratings1 Basic Catalog Number 89811, 89021, 89031, 89071, SC15HG, 89221, , 89022, 89032, 89072, 89802, 89042, 89052, 89092, SC27SG, 89222, 89223, 99022, System Class 1 For 50-Hz applications, specify Microprocessor Control for Application on 50-Hz Systems, Catalog Number Suffix -F. kv Nom. Max BIL Cont or Minimum trip current is 5 amperes. Amperes, RMS2 Interr., Sym. Base Catalog Number

8 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 Two ⅜ 16 7½ bolts -D1 Backup Member with galvanized steel carriage bolts (3 minimum thread), flat washers, lockwashers, and nuts Four ⅜ 16 7½ bolts -D2 Two ⅜ 16 9 bolts -D3 Four ⅜ 16 9 bolts -D4 List of Available Curves Microprocessor Recloser Cooper Microprocessor Form 4,5,6,FX Name Definition S&C 101 Cooper 101 S&C 102 Cooper 102 S&C 103 Cooper 103 S&C 104 Cooper 104 S&C 105 Cooper 105 S&C 106 Cooper 106 S&C 107 Cooper 107 S&C 111 Cooper 111 S&C 112 Cooper 112 S&C 113 Cooper 113 S&C 115 Cooper 115 S&C 116 Cooper 116 S&C 117 Cooper 117 S&C 118 Cooper 118 S&C 119 Cooper 119 S&C 120 Cooper 120 S&C 132 Cooper 132 S&C 133 Cooper 133 S&C 134 Cooper 134 S&C 135 Cooper 135 S&C 137 Cooper 137 S&C 138 Cooper 138 S&C 142 Cooper 142 S&C 151 Cooper 151 S&C 161 Cooper 161 S&C 162 Cooper 162 S&C 163 Cooper 163 S&C 165 Cooper 165 S&C 201 Cooper 201 S&C 202 Cooper 202 SEL 351R/651R Recloser Control Name SEL U1 SEL U2 SEL U3 SEL U4 SEL U5 SEL C1 SEL C2 SEL C3 SEL C4 SEL C5 Definition SEL U1 Moderately Inverse SEL U2 Inverse SEL U3 Very Inverse SEL U4 Extremely Inverse SEL U5 Short-Time Inverse SEL C1 Standard Inverse SEL C2 Very Inverse SEL C3 Extremely Inverse SEL C4 Long-Time Inverse SEL C5 Short-Time Inverse ABB DPU 2000R Recloser Control Name ABB INV ABB VI ABB EI ABB STI ABB STEI Name IEC SI IEC VI IEC EI Name IEEE EI IEEE MI IEEE VI ABB Inverse Definition ABB Very Inverse IEC Standard Curve ABB Extremely Inverse ABB Short-Time Inverse ABB Short-Time Extremely Inverse Definition IEC Standard Inverse IEC Very Inverse IEEE Standard Curve IEC Extremely Inverse Definition IEEE Extremely Inverse IEEE Moderately Inverse IEEE Very Inverse 8

9 List of Available Curves continued Fuse Link Ampere Rating K-Speed T-Speed QR KS 6K 6T 3QR 65KS 8K 8T 8QR 10K 10T 10QR 12K 12T 12QR 15K 15T 15QR 20K 20T 20QR 25K 25T 25QR 30K 30T 30QR 40K 40T 40QR 50K 50T 50QR 65K 65T 65QR 80K 80T 80QR 100K 100T 100QR Cooper (McGraw-Edison) Hydraulic Recloser Type H Name Definition Coil Rating H-A H-B H-C Type H, A curve Type H, B curve Type H, C curve Type 4H, V4H 5A, 10A, 15A, 25A, 35A, 50A 5A, 10A, 15A, 25A, 35A, 50A 5A, 10A, 15A, 25A, 35A, 50A Name Definition Coil Rating (V)4H-A (V)4H-B (V)4H-C Type 4H or Type V4H, A curve Type 4H or Type V4H, B curve Type 4H or Type V4H, C curve 5A, 10A, 15A, 5A, 10A, 15A, 5A, 10A, 15A, Type L Name Definition Coil Rating L-A L-B L-C L-D Type L, A curve Type L, B curve Type L, C curve Type L, D curve Type V4L, V4E Name Definition Coil Rating V4L(E)-A V4L(E)-B V4L(E)-C V4L(E)-D Type V4L or Type V4E, A curve Type V4L or Type V4E, B curve Type V4L or Type V4E, C curve Type V4L or Type V4E, D curve Type E 15A, 25A, 35A, 50A, 15A, 25A, 35A, 50A, 15A, 25A, 35A, 50A, 15A, 25A, 35A, 50A, Name Definition Coil Rating E-A E-B E-C E-D Type E, A curve Type E, B curve Type E, C curve Type E, D curve Type 4E 5A, 10A, 15A, 5A, 10A, 15A, 5A, 10A, 15A, 5A, 10A, 15A, Name Definition Coil Rating 4E-A Type 4E, A curve 50A, 4E-B Type 4E, B curve 50A, 4E-C Type 4E, C curve 50A, 4E-D Type 4E, D curve 50A, 9

10 User Interface LCD screen Mode selector lever User configurable LCD screen and mode selector lever. Springs help guide lever to the desired position; colored labels provide visual confirmation. NR mode engaged as shown: upper label completely exposes and lower labels (down position) align. Available LCD Screen Items Screen Name Description Primary Normal Screen Four operating parameters are displayed: Vacuum Interrupter Status (Open or Closed); Mode Selector Status (Auto or NR); Overload Indicator at the bottom left corner (Symbol "X"); and Service Soon Indicator at the bottom right corner (Symbol " "). The Overload Indicator will appear when TripSaver II has dropped open due to an overload. The Service Soon Indicator will appear when the vacuum interrupter reaches 10% of its remaining contact wear. Secondary Normal Screen Three operating parameters are displayed: Vacuum Interrupter Status at the upper left corner (Symbol "O" for Open, Symbol "I" for Closed); Number of Open Operations at the upper right corner; and Remaining Contact Wear in bar chart format at the bottom of the screen. (A full blue bar indicates 100% remaining contact wear. The blue bar shortens in length leftwards as remaining contact wear decreases.). Blue Screen A blue screen is displayed. Load Current The load current in primary amperes is displayed. Last Fault Magnitude The fundamental-frequency magnitude of the last fault current in primary amperes, measured just prior to the opening of the vacuum interrupter, is displayed. Vaccum Interrupter Status The state of the vacuum interrupter: either Open or Closed, is displayed. Mode Selector Status The mode of operation: either Auto or NR, is displayed. 10

11 Available LCD Screen Items continued Screen Name Description Number of Open Operations The number of vacuum interrupter open operations registered, is displayed. Remaining Contact Wear in % The remaining vacuum interrupter contact wear, in percent, is displayed. LCD Screen Temperature The temperature of the LCD screen, in Celsius degrees, is displayed. TCC #0 (Initial Trip) The short name for the Initial Trip curve is displayed. TCC #1 (Test 1) The short name for the Test 1 curve (2nd TCC curve) is displayed. TCC #2 (Test 2) The short name for the Test 2 curve (3rd TCC curve) is displayed. TCC #3 (Test 3) The short name for the Test 3 curve (4th TCC curve) is displayed. Sectionalizing Mode Counts The number of counts for sectionalizing mode is displayed. This screen is automatically skipped if sectionalizing mode is disabled. Interrupting Rating The interrupter ratings of the device in ka is displayed. Max Rated Voltage The rated max voltage of the device: either 15.5kV or 29kV, is displayed. System Frequency The frequency of the electrical system the TripSaver II device is configured for, in Hz is displayed. Software Versions Three pieces of information about software version are displayed: Application; Bootloader; and Radio Frequency MicroController Unit. 11

12 Service Center Configurable New Our latest offering, TripSaver II Service Center Configurability feature, provides customers with flexibility to reconfigure their devices and read event logs using S&C IntelliLink TS-II Setup Software. S&C IntelliLink TS-II Setup Software Intuitive Graphic-User-Interface makes the configuration process quick, easy, and enjoyable. Software also allows users to view status-related information, read event logs, and perform functional tests. Service Center Configuration Kit Portable configuration kit includes a universal power supply to power up TripSaver II, and a USB Transceiver for a computer to communicate with the device. Extension cord Power module USB transceiver AC adapter 12

13 TripSaver II Styles Base Catalog Numbers or Complete Overhead Pole-Top Style TripSaver II rated 15 kv nominal; 15.5 kv maximum; 110 kv BIL; 100 amperes continuous; or amperes interrupting, RMS, symmetrical; 8½ inches (216 mm) leakage distance to ground; porcelain mounting. Base Catalog Numbers or Complete Overhead Pole-Top Style TripSaver II rated 25 kv nominal; 29 kv maximum; 125 kv BIL; 100 amperes continuous; or amperes interrupting, RMS, symmetrical; 11 inches (279 mm) leakage distance to ground; porcelain mounting. Base Catalog Numbers or Complete Overhead Pole-Top Style TripSaver II rated 25 kv nominal; 29 kv maximum; 150 kv BIL; 100 amperes continuous; or amperes interrupting, RMS, symmetrical; 17 inches (432 mm) leakage distance to ground; porcelain mounting. Base Catalog Numbers E or E. Complete Branch-Feeder Style TripSaver II rated 15 kv nominal; 15.5 kv maximum; 150 kv BIL; 100 amperes continuous; or amperes interrupting, RMS, symmetrical; 24¼ inches (616 mm) leakage distance to ground; Cypoxy insulators. 13

14 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. 14

15 Specifications Voltage Ratings 15 kv Nominal Operating Voltage (kv)...15 Maximum Design Voltage (kv) Basic Insulation Level (BIL) of mounting kv Nominal Operating Voltage (kv)...25 Maximum Design Voltage (kv)...29 Basic Insulation Level (BIL) of mounting...125/150 Current Ratings Continuous Current (amperes) All models Symmetrical Interrupting Current (amperes) All models /6 300 Overload Capability 40 C) All models 125 amperes (125%)... more than 5 hours 150 amperes (150%)...50 minutes Half-Second Short-Time Withstand Current, Symmetrical (amperes) All models 100 amperes Duty Cycle Percent of Maximum Circuit Interrupting Rating Mechanical Life Minimum X/R Ratio Number of Unit Operations Total 68 Minimum Number of Operations Weight, lbs. (kg) 15 kv (110 kv BIL)...23 (10.5) 25 kv (125 kv BIL or 150 kv BIL)...25 (11.3) 15

16 Printed in U.S.A. Descriptive Bulletin June 2, 2014 Offices Worldwide