•1.General structure
•
•The product of type LW-170 HV SF6circuit breaker , with single break structure, adopts self energy arc interrupting principle in its interrupter . The operating mechanism is of three-phase electrical group operation. The three poles are install on one frame and controlled by one spring mechanism.
•The upper of the product is interrupter and the middle is support insulator bushing and frame, and the spring mechanism is in the middle of the frame.
•The electrical control device, density device and the mechanism energy store device are in the mechanism box.
• 2.Technical data
•Rated voltage 170kV
• Rated frequency 50HZ
• Rated current 3150A
•Rated short circuit breaking current 31.5kA ,40kA
•Rated short time withstand current 31.5kA , 40kA
•Rated short circuit making current 80 kA , 100kA
• Rated peak withstand current 80 kA , 100kA
• Power frequency withstand voltage for 1 min 325 kV
• Rated Lightning impulse withstand voltage 750 kV
• Rated SF6 gas pressure(200C) 0.6MPa (Required 0.64MPa)
•Total travel 180 MM
•Circuit breaker distance 145 MM
•Operation mechanism type CT20-III(X)P spring mechanism
| TECHNICAL SPECIFICATIONS CIRCUIT BREAKER |
| ITEM |
CHARACTERISTICS |
UNIT |
TOTORAS (1) ESMERALDAS (1) PORTOVIEJO(1) |
OFFERED TECHNICAL SPECIFICATIONS |
| TYPE - C |
| 1 |
TYPE OF CIRCUIT BREAKER REQUIRED |
|
|
|
| 1.1 |
Type (similar to) |
|
170 MHM-20 C |
LW-170 |
| 1.2 |
Detail type |
|
Tank Live, Single-Phase in SF6 |
Tank Live, Single-Phase in SF6 |
| 1.3 |
Use |
|
GeneraL |
GeneraL |
| 1.4 |
Opening |
|
Single-Phase |
Single-Phase |
| 1.5 |
Arc extinguishing medium |
|
SF6 |
SF6 |
| 2 |
REQUIRED QUANTITY |
|
3 |
3 |
| 3 |
INSTALLATION |
|
Outdoor |
Outdoor |
| 4 |
CHARACTERISTICS OF CIRCUIT BREAKER |
|
|
|
| 4.1 |
Number of Poles |
|
3 |
3 |
| 4.2 |
Nominal voltage |
kV |
170 |
170 |
| 4.3 |
Dielectric strength and atmospheric impulse at sea level |
kVpic |
750 |
750 |
| 4.4 |
Industrial frequency dielectric, a minute at sea level |
kV |
325 |
325 |
| 4.5 |
Minimum distance of contouring (pollution level III) |
mm |
3625 |
3625 |
| 4.6 |
Nominal frequency |
Hz |
60 |
60 |
| 4.7 |
Rated normal current |
A |
1250 |
1250 |
| 4.8 |
Nominal current interruption of line vacuum |
A |
63 |
63 |
| 4.9 |
Nominal current interruption of cable in vacuum |
A |
160 |
160 |
| 4.10 |
Rated short circuit interruption |
|
|
|
| |
-Effective value of the alternating component |
kArms |
20 |
20 |
| 4.11 |
Opening of the first polo factor |
|
1.3 |
1.3 |
| 4.12 |
Reason for increase of the recovery voltage to 100% of the rated breakig capacity |
kV/us |
2 |
2 |
| 4.13 |
Nominal capacity of closing short |
kA |
104 |
104 |
| 4.14 |
Rated operating sequence |
|
O- 0.3"/CO- 3'-CO |
O- 0.3"/CO- 3'-CO |
| 4.15 |
Rated duration of short circuit |
s |
1 |
1 |
| 4.16 |
Rated interruption in discordance of Poles |
kA |
10 |
10 |
| 4.17 |
Maximum total interrupt time |
ms |
50 |
50 |
| 4.18 |
Mechanism of operation (closing - Shooting) |
|
Engine - Spring |
Engine - Spring |
| 4.19 |
Drive mechanism |
|
Single-Phase |
Single-Phase |
| 4.20 |
Number of circuits independent of firing 125 Vdc |
|
2 |
2 |
| 4.21 |
Mechanical strength (standard IEC 62271-100) class |
|
M2 |
M2 |
| 4.22 |
Kind of electrical resistance (standard IEC 62271-100) |
|
E2 |
E2 |
| 4.23 |
Voltage control and engine |
VDC |
125 |
125 |
| 4.24 |
Voltage of auxiliary services |
VAC |
120 |
120 |
| 4.25 |
Terminal connector for AAC 1033 kcmil conductor |
YES/NO |
Yes |
Yes |
| 4.26 |
Insulators material |
|
Porcelain |
Porcelain |
| 4.27 |
Metal support structure |
YES/NO |
Yes |
Yes |
Audited Supplier 
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