200SFMT
200SFMT
200SFMT
MODEL: 200-SFMT-40SE
200-SFMT-50SE
I n t ro d u c t i o n E vo l u t i o n a r y D e s i g n The SFMT breaker features isolated phase
Mitsubishi Electric Power Products, Inc. is an Thousands of SFMT breakers rated at dead tanks supported by a galvanized steel
affiliate of Mitsubishi Electric Corporation. transmission voltages through 1100kV have frame. Each tank houses a single-break
been installed and are operating reliably on puffer interrupter and supports two
Fa c t o r y T&D systems worldwide. Introduced in porcelain or composite bushings. The tanks
Mitsubishi Electric Power Products manufac- 1974, the design is based on proven and bushings are pressurized with SF6 gas.
turing facility is located in Warrendale, engineering principals and extensive
Pennsylvania, a suburb of Pittsburgh. This development and testing. The frame also supports the control cabinet.
location, along with an office in Los Angeles, It houses spring-type operating mechanisms,
California, serves as center for product linkages and the control circuits.
service and training.
Solutions for Surge Elimination by Conventional GCB vs. Synchronous Switching GCB
Load Conventional Practice Synchronous Switching
Transformer Closing Resistor Synchronous Closing
(Peak Voltage Point)
Line Closing Resistor Synchronous Closing
Surge Arrester (Zero Voltage Point)
Shunt Capacitor Closing Resistor Synchronous Closing
Series Reactor (Zero Voltage Point)
Surge Arrester Synchronous Opening
(Maximum Arcing Time)
Shunt Reactor Opening Resistor Synchronous Opening
Surge Arrester (Maximum Arcing Time)
> > T H E D E TA I L S T H AT R E D U C E M A I N T E N A N C E C O S T S < <
Closed Position
Open Position
S F6 G a s S y s t e m and monitoring while increasing safety. This seal points in combination with low static
A common SF6 gas system serves all three and monitoring while increasing safety. This seal points in combination with low static
pole units. Located in the control cabinet, monitoring system uses few components pressure, potential leak paths are greatly
the precise yet simple arrangement of the that can misoperate or fail causing false reduced.
system eases filling, evacuation, inspection alarms, and by using the fewest possible
PRESSURE VERSUS TEMPERATURE FOR NORMAL PRESSURE OF 586 kPag SF6 GAS
700
(101.5)
kPag 600 Saturation Curve
(psig) (87.0)
500
(72.5)
Lockout
400
(58.0) Alarm
PRESSURE
300
Normal
(43.5)
200
(29.0)
100
(14.5)
0
C -50 -40 -30 -20 -10 0 10 20 30 40 50 60
(0)
F -58 -40 -22 -4 14 32 50 68 86 104 122 140
TEMPERATURE
Pressure Gauge
Sampling Valve
Pressure Switch
C
F
D G G
A I
B H
Dimensions in inch / mm
TYPE 200-SFMT-40SE 200-SFMT-50SE
A 192 / 4864 192 / 4864
B 71 / 1793 71 / 1793
C 122 / 3089 122 / 3089
D 84 / 2125 84 / 2125
E 118 / 2989 118 / 2989
F 177 / 4484 177 / 4484
G 84 / 2135 84 / 2135
H 68 / 1717 68 / 1717
I 165 / 4193 165 / 4193