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The Joslyn SF6 load break switch has three position switches that allow close-open-ground or close-open-test ground switching. Applications include indoor, outdoor, subsurface, and padmount applications for systems rated 15kV and 27kV. Rated load break switching of 200 or 600 Amperes. The corrosion-resistant tank is constructed of stainless steel and is completely sealed. |
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Easy to Operate |  |
| Sequences are controlled by one single operating handle | ||
|
Three Positions | |
| Three phase, three position (close/open/test/ground position) with 2, 3, or 4 way configuration | ||
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Puffer Contact System | |
| Provides efficient arc extinction combined with an internal absorbent to limit by-product formation | ||
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Rugged Construction | |
| Coal tar epoxy stainless steel tank provides deadfront, compact, sealed construction and prevents corrosion | ||
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SCADA Compatible | |
| Manually operated with optional motor operators | ||
| Specifications |
| SF-6 Ratings | ||
| Maximum Design Voltage |
15kV
|
27kV
|
| Frequency |
50/60 Hz
|
50/60 Hz
|
| BIL Impulse Withstand |
95kV
|
125kV
|
| One Minute AC Withstand |
35kV
|
60kV
|
| Fifteen Minute DC Withstand |
53kV
|
78kV
|
| Corona Extinction @ 3PC |
11kV
|
19kV
|
| Load Interrupting & Load Switching |
600 Amps
|
600 Amps
|
| Transformer Magnetizing Interrupting |
21 Amps
|
25 Amps
|
| Capacitor & Line Charging Interrupting |
27
Amps
|
40
Amps
|
| Asymmetrical Momentary* |
22.5kA
|
22.5kA
|
| 3 Operation Fault Close* |
22.5kA
|
22.5kA
|
| Symmetrical 1 Second Rating* |
15kA
|
15kA
|
| Continuous Current Rating* |
600 Amps
|
600 Amps
|
| 8 Hour Overload Current* |
900
Amps
|
900
Amps
|
| Overload Interrupting Capability 10 Operations |
1400 Amps
|
1400 Amps
|
| Operations - 600 Amp Load Interrupting Endurance |
500
|
500
|
| Open Gap BIL Flashover Withstand |
145kV
|
145kV
|
| Mechanical Life Operations |
2000
|
2000
|
| SF-6 Gas Normal Operating Pressure |
2-15 PSIG
|
2-15 PSIG
|
| Maximum Gas Leakage cc/second |
10 - 7
|
10 - 7
|
| ASTM B-117 Corrosion Resistance in Hours |
2000
|
2000
|
| Fault Withstand Symmetrical "Phase-to-Phase" - 22 Cycles |
12kA
|
12kA
|
| Internal Fault Withstand Before Venting - 40 Cycles |
5kA
|
5kA
|
| *NOTE: When 200 amp elbow connections are specified, the continuous current, overload, momentary and one-second ratings will be derated. Typically 200 Amp accessories are rated 200 Amp continuous, 300 Amp 8 hour overload, 15kA ASYM momentary and 10kA for 1/2 second. |
| SF-6 Ordering Information | ||||
|
SWITCH
CONFIGURATION |
CATALOG NO.
|
MAXIMUM VOLTAGE
|
WEIGHT (lbs.) |
WIDTH (in.)
|
|
2 Way/1 Switched Way |
SG6TG-21-15
SG6TG-21-27 |
15.5kV
27kV |
450 lbs.
450 lbs. |
35"
35" |
|
2 Way/2 Switched Ways |
SG6TG-22-15
SG6TG-22-27 |
15.5kV
27kV |
500 lbs.
500 lbs. |
35"
35" |
| 3 Way/3 Switched Ways (right or left hand operation) |
SG6TG-33-15
SG6TG-33-27 |
15.5kV
27kV |
680 lbs.
680 lbs. |
50"
50" |
| 4 Way/4 Switched Ways (right or left hand operation) |
SG6TG-44-15
SG6TG-44-27 |
15.5kV
27kV |
900 lbs.
900 lbs. |
65"
65" |
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Options and Accessories |
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Viewing Windows - Allow visual confirmation of contact position |
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Ground Test Bushings - Provide convenient disconnecting, ground and test of incoming lines |
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Motor Operators - For remote operation (Available on multi-way switches) |
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Remote Supervisory - Control packages with battery back-up |
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Padmount - Enclosed padmount unit |
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电话:(86 21) 6432 9508(总机) 直线:(86 21) 6432 9506 传真:(86 21) 6432 9507 邮件: jane.chen@tnb.com |
