TVI - Load Break Switching with Integral Ground and Fault Interrupting

G&W Electric model TVI padmount switches include load break and fault interrupting capability. The load break switch features visible break and integral ground position. The integral ground position eliminates the need to handle any high voltage connections to ground the cable connected to the load break ways. The fault interrupters provide electronically controlled, resettable over current protection in a totally sealed, dead front device. The TVI can be configured to provide 1-phase or 3-phase operation of the fault interrupting ways. The switches are designed for use on 3-phase systems with voltages up to 38kV, 630A load break and continuous current, with 12.5kA or 20kA symmetrical fault interrupting ratings. The TVI is one of G&W Electric’s most versatile switch styles because it can be ordered with front accessible switch operators and bushings (front access) as well as front and back access to replace existing pad mount air gear installations

The switches are designed to IEEE C37.72, C37.74, and C37.60 for load break and fault interrupting capability. Padmount enclosures are designed and tested to IEEE C57.12.28 and C57.12.29.

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Features and Benefits

Configurations Chart for TVI Front Access
# of WaysOne-line Diagram (Horizontal)Voltage Class (kV)Catalog Number
Approximate
Width* in. (mm)Wt. w/SF6 lbs (kg)
6F
15TVI32-376-12-6F67.9 (1725)1700 (773)
25TVI32-386-12-6F71 (1803)1550 (705)
35TVI32-396-12-6F80 (2032)1350 (612)
9F
15TVI42-376-12-9F92 (2337)2200 (1000)
25TVI42-386-12-9F
35TVI42-396-12-9F112 (2845)2400 (1090)
52F
15TVI52-376-12-52F113 (2870)2450 (1112)
25TVI52-386-12-52F
35TVI52-396-12-52F143 (3632)2850 (1294)
62F
15TVI62-376-12-62F134(3404)2700 (1226)
25TVI62-386-12-62F
35TVI62-396-12-62F173 (4394)3400 (1544)
Configurations Chart for TVI Front & Rear Access
# of WaysOne-line Diagram (Horizontal)Voltage Class (kV)Catalog Number
Approximate
Width* in. (mm)Wt. w/SF6 lbs (kg)
5
15TVI21-376-12-544.5 (1130)850 (432)
25TVI21-386-12-5
35TVI21-396-12-5
6
15TVI32-376-12-674 (1880)1799 (773)
25TVI32-386-12-6
35TVI32-396-12-6
7
15TVI31-376-12-774 (1880)2000 (909)
25TVI31-386-12-7
35TVI31-396-12-7
8
15TVI41-376-12-874 (1880)2300 (1045)
25TVI41-386-12-8
35TVI41-396-12-8
9
15TVI42-376-12-974 (1880)2300 (1045)
25TVI42-386-12-9
35TVI42-396-12-9
10
15TVI44-376-40-1074 (1880)2200 (1000)
25TVI44-386-40-10
35TVI44-396-40-10
11
15TVI43-376-12-1174 (1880)2200 (1000)
25TVI43-386-12-11
35TVI43-396-12-11
12
15TVI41-376-12-1274 (1880)2400 (1091)
25TVI41-386-12-12
35TVI41-396-12-12
13
15T33-376-40-1374 (1880)2000 (908)
25T33-386-40-13
35T33-396-40-13
14
15TVI42-376-12-1474 (1880)2000 (908)
25TVI42-386-12-14
35TVI42-396-12-14
Configurations Chart for VTVI Front Access
# of WaysOne-line Diagram (Horizontal)Voltage Class (kV)Catalog Number
Approximate
Width* in. (mm)Wt. w/SF6 lbs (kg)
6F
15VTVI32-376-12-6F72 (1829)1300 (590)
25VTVI32-386-12-6F1425 (648)
35VTVI32-396-12-6F81 (2057)1525 (693)
9F
15VTVI42-376-12-9F93 (2362)1700 (771)
25VTVI42-386-12-9F
35VTVI42-396-12-9F102 (2591)
52F
15VTVI52-376-12-52F114 (2896)1825 (830)
25VTVI52-386-12-52F
35VTVI52-396-12-52F123 (3124)2000 (909)
62F
15VTVI62-376-12-62F135 (3429)2025 (920)
25VTVI62-386-12-62F
35VTVI62-396-12-62F144 (3658)2500 (1136)
Approximate height of tank minus frame: 29" (737mm), Approximate depth: 32.4 (823mm)
Ratings Chart for TVI Front Access
Voltage Class15kV25kV35kV
Maximum design voltage15.5kV27kV38kV
Impulse level (BIL)110kV125kV150kV
One minute withstand35 AC kV60 AC kV70kV
One minute withstand, production test rating34 AC kV40 AC kV50kV
15 minute withstand53 DC kV78 DC kV103kV
Continuous and load break current630 Amps630 Amps630 Amps
Momentary current40kA asym40kA asym40kA asym
Fault close current, (3 times)32kA asym32kA asym32kA asym
One second current25kA asym25kA asym25kA asym
Fault interrupting ratings12kA or 20kA sym12kA or 20kA sym12kA or 20kA sym
Mechanical endurance, operations200020002000
EEE C37.60 Fault Interrupting Duty
Total number of fault interruptions: 116
Percent of Maximum Interrupting RatingNo. of Fault Interruptions
15 – 20%44
45 – 55%56
90 – 100%16
Ratings Chart for TVI Front & Rear Access
Voltage Class15kV25kV35kV
Maximum design voltage15.5kV27kV38kV
Impulse level (BIL)110kV125kV150kV
One minute withstand35 AC kV60 AC kV70kV
One minute withstand, production test rating34 AC kV40 AC kV50kV
15 minute withstand53 DC kV78 DC kV103kV
Continuous and load break current630 Amps630 Amps630 Amps
Momentary current40kA asym40kA asym40kA asym
Fault close current, (3 times)32kA asym32kA asym32kA asym
One second current25kA asym25kA asym25kA asym
Fault interrupting ratings12kA or 20kA sym12kA or 20kA sym12kA or 20kA sym
Mechanical endurance, operations200020002000
EEE C37.60 Fault Interrupting Duty;
Total number of fault interruptions: 116
Percent of Maximum Interrupting RatingNo. of Fault Interruptions
15 – 20%44
45 – 55%56
90 – 100%16
Ratings Chart for VTVI Front Access
Voltage Class15kV25kV35kV
Maximum design voltage15.5kV27kV38kV
Impulse level (BIL)110kV125kV150kV
One minute withstand35 AC kV60 AC kV70 kV
One minute withstand, production test rating34 AC kV40 AC kV50 kV
15 minute withstand53 DC kV78 DC kV103 kV
Continuous and load break current630 Amps630 Amps630 Amps
Momentary current40kA asym40kA asym40kA asym
Fault close current, (3 times)32kA asym32kA asym32kA asym
One second current25kA sym25kA sym25kA sym
Fault interrupting ratings12kA or 20kA12kA or 20Ka12kA or 20kA
Mechanical endurance, operations200020002000
EEE C37.60 Fault Interrupting Duty
Total number of fault interruptions: 116
Percent of Maximum Interrupting RatingNo. of Fault Interruptions
15 – 20%44
45 – 55%56
90 – 100%16
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