STS

Static load switchers GE Digital EnergySTS are developed to load two independent electric power supply sources.

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On the contrary to traditional ALT, a static switcher provides quick switch (as a rule, not less than 1/4 of a unit period) that provides continuous work of sensible electronic equipment. Switch of the load to a priority takes place almost instantaneously (as a rule, during 0.1 ms).

Main application of STS is developing automation systems for power generation sector, electric power supply systems in petrochemical and oil refinery industry, computer and telecommunication centres, automated and safety systems of "Smart Buildings" as well as other equipment sensible to power failures. High overload capability and switching algorithms provide selectivity of protection systems at short circuits in the load. As a consequence, voltage is immediately fed to other consumers. Integrated protection against impulse noise of thyristor keys provides additional protection of consumers.

The static switcher consists of double-headed thyristor keys for every phase shift as well as control and safety systems. 4-pole models have also a neutral switch. If priority input fails, STS checks the state of backup input and transfers the load to it when the parameters are within the tolerance.

Switching may be caused by interferences or switching-off of priority input, input overloads, manual or remote alteration of input priority.

If two inputs are synchronized (difference in phase less than critical meaning) and have valid parameters, manual or remote switching is accomplished less than during 0.2 ms. The time of switching caused with failure of priority input is defined with the state of the priority input. If the inputs are synchronized the switching is performed with a delay not exceeding 6 ms at permissible phase difference. Absence of synchronization causes an additional delay before switching, a delay duration is set by the user.

During the whole service life all equipment produced by GE is comprehensively supported by assistance department rendering services on prevention maintenance or efficient repair twenty four hours a day.


Features and Benefits
  • The adjustable voltage range for flexible equipment protection against different disturbances of electric power supply
  • Three backed-up electric power supply units provide high reliability
  • Fault-tolerant complementary MOS logic for rapid and reliable control of STS state
  • Easy installation and maintenance
  • Backed-up cooling system provides operability even if a fan fails
  • Protection against impulse noises to avoid damages of STS and equipment connected
  • Switch blocking at short circuit prevents switching-off other consumers
  • Manual switch for uninterrupted load switching while servicing
  • Dry contacts to transfer information about the state and emergencies into other control systems
  • Integrated 19" cabinet for easy integration into other systems
  • User-friendly interface of control panel ensures easy monitoring
  • 200% cross-section neutral area compared with a rated assembly to operate under unbalanced loads
25А
3-pole, floor-mounted cabinet (H х W х D), mm:  1100 x 800 x 400
3-pole, 19’’ case (H х W х D), mm:  710 x 483 x 465
4-pole, floor-mounted cabinet (H х W х G), mm:  1100 x 800 x 400
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  60
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  32 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS
40А
3-pole, floor-mounted cabinet (H х W х D), mm:  1100 x 800 x 400
3-pole, 19’’ case (H х W х D), mm:  710 x 483 x 465
4-pole, floor-mounted cabinet (H х W х G), mm:  1100 x 800 x 400
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  68
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  32 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS
63А
3-pole, floor-mounted cabinet (H х W х D), mm:  1100 x 800 x 400
3-pole, 19’’ case (H х W х D), mm:  710 x 483 x 465
4-pole, floor-mounted cabinet (H х W х G), mm:  1100 x 800 x 400
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  72
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  32 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS
100А
3-pole, floor-mounted cabinet (H х W х D), mm:  1100 x 800 x 400
3-pole, 19’’ case (H х W х D), mm:  710 x 483 x 465
4-pole, floor-mounted cabinet (H х W х G), mm:  1900 x 800 x 500
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  195
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  8 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS
150А
3-pole, floor-mounted cabinet (H х W х D), mm: 
3-pole, 19’’ case (H х W х D), mm: 
4-pole, floor-mounted cabinet (H х W х G), mm: 
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  195
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  8 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS
250А
3-pole, floor-mounted cabinet (H х W х D), mm:  1900 x 800 x 500
3-pole, 19’’ case (H х W х D), mm: 
4-pole, floor-mounted cabinet (H х W х G), mm:  1900 x 1200 x 500
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  195
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  15 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS
400А
3-pole, floor-mounted cabinet (H х W х D), mm:  1900 x 1200 x 500
3-pole, 19’’ case (H х W х D), mm: 
4-pole, floor-mounted cabinet (H х W х G), mm:  2100 x 1200 x 600
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  280
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  25.5 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS
630А
3-pole, floor-mounted cabinet (H х W х D), mm:  2100 x 1200 x 600
3-pole, 19’’ case (H х W х D), mm: 
4-pole, floor-mounted cabinet (H х W х G), mm:  2300 x 1200 x 600
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  280
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  39 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS
Model
25А
3-pole, floor-mounted cabinet (H х W х D), mm:  1100 x 800 x 400
3-pole, 19’’ case (H х W х D), mm:  710 x 483 x 465
4-pole, floor-mounted cabinet (H х W х G), mm:  1100 x 800 x 400
4-pole, 19’’ (H х W х D), mm:  710 x 483 x 465
Weight (approximatey), kg:  60
Color:  RAL 7032
Rated input voltage:  3 х 400 V
Input voltage range:  -25% / +20%
Rated frequency:  50 Hz
Frequency range:  -9% / +6%
Efficiency coefficient:  > 99% at cos? = 0,8
Allowable cross ratio:  3,5 : 1
Power factor (max. cos?):  0.5 – 1.0 (delay /advance)
Overload capability:  125% - hour, 400% - 5 seconds, 800% - 0.4 sec, 1000% - 0.2 sec, 1500% - 20 msec
Short circuit current:  32 kA
Time of switch (manual /automatic):  <0.1 ms / <6 ms (typical 3 ms)
Level of increased voltage:  + 6 / 9 / 13 / 16 / 20%
Level of decreased voltage:  - 8 / 12 / 16 / 20 / 24%
Phase difference (for synchronized inputs):  8 / 12 / 16 / 20 / 24 degrees
Switch at current overload:  block is absent / 3 / 4,5 / 6 / 7,5 / 9-fold overload
Switch delay (without synchronization):  13 / 17 / 25 / 50 msec
Delay of reset to priority input:  0,8 / 1 / 8 / 25 sec
Conditions: Temperature 0 - 40°C
Conditions: Relative humidity <95% without condensation
Conditions: Level above sea 1000 m (more than 1000 m power reduce by 5%) / 500 m / not more than 3000 m
Conditions: Cooling back-up fans
Conditions: Noise level <55 dBA
Conditions: IEC EN50022 level B, EN60555-23
Conditions: Design IP20 (floor-mounted cabinets), IP00 (19’’ case)
Alarm: Dry contacts 300 V or 250 V-/ 0,3 A = 4 or A-(at 220)
Alarm: Status Information manual switch, return blockage, main/back-up input ОК, main/back-up input ON
Alarm: Notifications main/back-up of input out of tolerance, no synchronization, manual mode
Alarm: Emergency alarms overload, overheat, fuse actuated, internal accident of STS