-This is a high standard design SF6 gas load break switch which is suit for pole mounted.
-RPS type load break switch is KEMA type tested.
-RPS type load break switch can combined as below different functions switchgear:
Manual type load break switch
Motorize type load break switch
Remote control load break switch
RPS load break switch with options for porcelain bushing or silicone rubber bushing or extentional cables
-24kV class RPS load break switch specification:
ROCKWILL® Electric strives to bring our customers the latest technology and competitive pricing and best service for distribution automatic.
RPS is an SF6-insulated, outdoor pole mounted load break switch family for overhead lines and specifically designed for use in modern remote controlled distribution automation systems. The RPS offers reliable maintenance free operation even in the most demanding climatic conditions including salt laden atmospheres, corrosive industrial pollution, snow and ice. It has excellent load breaking and fault making capacity and satisfies the isolation requirements specified for load break switch. The earthed metal tank prevents all possible leakage currents across an open switch. RPS can be manually operated or motor operated for local and remote electric control, upgraded.
● Service environment
1.Air temperature: Maximum temperature: +85℃; Minimum temperature:-45℃
Humidity: Monthly average humidity 95%; Daily average humidity 90% .
Altitude above sea level: Maximum installation altitude: 2500m or more higher.
Ambient air not apparently polluted by corrosive and flammable gas, vapor etc. No frequent violent shake
With optional classes for rated current range:
--Type RPS 15, Rating6-20 kV with 400A, 16 kA up to 1250A, 20kA;
--Type RPS 27, Rating22-27 kV with 400A, 16 kA up to 1250A, 20kA;
--Type RPS 38, Rating30-40.5 kV with 400A, 16 kA up to 1250A, 20kA;
With optional classes for different grid application installation:
Section function (Section)
50 Instantaneous/Definite-Time Overcurrent(P.OC)
51 Phase Time-Overcurrent(P.Fast curve/P.Delay curve)
Overload (N.Fast curve/N.Delay curve)
50N Residual Ground Instantaneous/Definite-Time Overcurrent(G.OC)
51N Residual Ground Time-Overcurrent (G.Fast curve/G.Delay curve)
50SEF Sensitive Earth Fault (SEF)
51c Cold Load(Cold load)
59 Over Voltage（L.Over volt）
27 Under Voltage (L.Under volt)
Primary/Secondary Phases and Earth Currents
Primary/Secondary Line and Phase Voltages
Apparent Power and Power Factor
Real and Reactive Power
Historical Demand Record
Positive Phase Sequence Voltage & Current
Negative Phase Sequence Voltage & Current
Zero Phase Sequence Voltage
Binary Input/Output status
Trip circuit healthy/failure
Time and date
The following information describes the curve timing for the curve and time dial settings made for the time-overcurrent elements The time-overcurrent relay curves in conform to IEEE C37.112-1996 IEEE Standard Inverse-Time Characteristic Equations for Overcurrent Relays.
C1 (Standard Inverse)
C2 (Very Inverse)
C3 (Extremely Inverse)
C4 (Long-Time Inverse)
C5 (Short-Time Inverse)
U1 (Moderately Inverse)
U3 (Very Inverse)
U4 (Extremely Inverse)
U5 (Short-Time Inverse)
● PC software for controller Testing, Setting, programing, Update.
Human friendship interface Programmable Time-Overcurrent curve
● RPS feature
The high quality 3 mm stainless steel are used for tank, which is designed for its maximum robustness and minimum welding line to minimize corrosion, and specifically to guarantee the safety of the operation personnel even with the internal arc faults at the maximum fault capacity of the tank the RPS can withstands an internal fault without venting hot gases.
The independent spring operation mechanism adopt ROCKWILL® patent spiral spring, provides a guaranteed load break fault make capability by ensuring the opening and closing speed of the switch.
The RPS is provided with light reflecting position indicator which are directly connected to the switch operating shaft providing clear and unambiguous switch position indication. Indicator made of light reflecting material, which is easily visible from ground level even at night in driving rain.
● Main new advantages of RPS
ROCKWILL® Supply special design manual closing device technology with own patent, It applied for normal and abnormal situation closing. It’s closing speed(time) comply with IEC62271-100.
This function can offset from magnetic actuator fault which when actuator can’t work will cause the major accident.
Corrosion resistant, Composite bushingManual lock-out mechanism (including hook stick) Reliable housing groundO/C indicator (made of light reflecting material), Operation counter, Gas density gauge which are easily visible from ground level.
Advanced and Integrated helium leakage detecting and filling equipment, which ensuring SF6 leakage of each switch is less than 0.1% strictly per year.
Motor drive, which easily retrofitted on site to manually operated units.
● Creepage Distances of RPS
|Terminal to ground creepage||15kV BIL 95/110kV||27kV BIL125/150kV||38kV BIL 170/200kV|
●Current transformer and Voltage sensor
Note: Current transformers and voltage sensors can be customized according to requirements.
●Standards for reference
IEC 62271-1 IEC 62271-102 IEC 62271-103
High-voltage switchgear and controlgear. Part 103: switches for rated voltage above 1 kV up to and including 52 kV
|Power frequency withstand voltage, 50 Hz|
|- to earth and between phases||kV||28||50||70|
|- across the isolating distance||kV||32||60||80|
|Lightning impulse withstand voltage|
|- to earth and between phases||kV||75||125||170|
|- across the isolating distance||kV||85||145||195|
|Rated normal current||A||400/630/800/1250|
|Mainly active load breaking current||A||400/630/800/1250|
|Number of breaking operations CO||times||400|
|Line-charging breaking current||A||1||1.5||2|
|Cable-charging breaking current||A||10||16||20|
|Earth fault breaking current||A||50||50||130|
|Cable charging breaking current|
|under earth fault conditions||A||28||28||80|
|No-load transformer breaking current||A||20|
|Short-time withstand current, Ik||kA/s||20 kA/4 s||20 kA/4 s||20 kA/4 s|
|Peak withstand current||kA||50||50||50|
|Short-circuit making current||kA||50||50||50|
|Number of making operations|
|- main switch 50 kA (CL E3)||times||5||5||5|
|- main switch 31.5 kA (CL E3)||times||10||10||10|
|- earthing switch 50 kA (CL E2)||times||3||3||3|
|- earthing switch 31.5 kA (CL E3)||times||5||5||5|
|Ambient air temperature limits||-40°C...+60°C|
|Mechanical endurance (number of CO operations)|
|- main switch||times||5000||5000||5000|
|- earthing switch||times||2000||2000||2000|
|Filling pressure (+20°C)||bar (abs)||1.4-1.5||1.4-1.5||1.8-1.9|
|Alarm pressure (+20°C)|
|- density switch||bar (abs)||1.2||1.2||1.65|
|- density gauge||bar (abs)||1.2||1.2||1.6|
|- low gas lock-out mechanism||bar (abs)||1.1||1.1||1.6|
|Degree of protection of the mechanism box||IP67|
1, Map guide&location 2, Protection setting&Modification 3, Monitoring&Controlling
●Master software for Distribution Automation Management