Rockwill auto recloser patents includes manual closing device,magnetic actuator, VI technology, VS technology, operating logics, software technology, insulation design, IS technology.
Rockwill owned many patents for auto recloser
----Patents information:
1. Manual closing device
2. Magnetic actuator
3. VI technology
4. VS technology
5. Operating logics
6. Software technology
7. Insulation design
8. IS technology
Technical Service:
ROCKWILL®, China. Provide with best support
Tel: 0086-577-27869969
Email: barry@rockwill.cn
● Summary
ROCKWILL ® Electric strives to bring our customers the latest technology and competitive pricing and best service for distribution automatic.
The RCW series automatic circuit reclosers can use on overhead distribution lines as well as distribution substation applications for all voltage classes 11kV up to 38kV at 50/60Hz power system. and it’s rated current can reach 1250A.
The RCW series automatic circuit reclosers integrates the functions of control, protection, measurement, communication, fault detection, on-line monitoring of closing or opening.
● Service environment
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
●Offering With optional classes for rated current range:
--Type RCW12, Rating 6-12 kV with 630A, 16 kA up to 1250A, 20kA;
--Type RCW15, Rating15-20 kV with 630A, 16 kA up to 1250A, 20kA;
--Type RCW27, Rating22-27 kV with 630A, 16 kA up to 1250A, 20kA;
--Type RCW38, Rating30-40.5 kV with 630A, 16 kA up to 800A, 20kA;
With optional classes for different grid application installation: Single phase & Three phase.
With optional relay protection& logics for user choice:
+Instantaneous over-current protection.
+Timing over-current protection
+Negative sequence over-current protection.
+Directional over-current protection(*).
+Over-voltage protection./Under voltage protection.
+Programable protection relay curves total 10 nos ANSI/IEC curves.
+Cold load pickup protection TCC +Hot line tag
+Earth protection EF/SEF +Zone Sequence Co-ordination
+More relay functions can be customized.
With optional communication protocols & I/O port for user choice:
RS-232 and RS-485 ports supporting.
DNP3.0 communication protocol support(*).
Modbus communication protocol is optional(*).
IEC 60870-5-101 communication protocol support.
IEC 60870-5-104 communication protocol support.(*).
The recloser can communicate through GPRS(Or GSM) modem with English or Specified language (*).
With optional functions for user.
Rated currents, System phase current.
Rated voltages, System phase voltage& secondary low voltage power supply voltage. Frequency, power(kWh),
reactive power(kV arh), power factor .
With optional reclosing interval for user pre-program:
Reclosing times setting support.
Dead time setting support.
With events recording function:
SOE 10000 operations record.
Fault record and normal operation record.
Note: (*) mean should customized by manufacturer if needed.
●Time-Overcurrent Curves 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.
| IEC Curves: | |
 |
C1 (Standard Inverse) C2 (Very Inverse) C3 (Extremely Inverse) C4 (Long-Time Inverse) C5 (Short-Time Inverse) |
| U.S. Curves: | |
 |
U1 (Moderately Inverse) U2 (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
● Recloser feature a)Outline of recloser:
The RCW series vacuum recloser is mainly combined with integration terminal, current transformer, permanent magnetic actuator and it’s recloser controller.
b)The recloser tank feature:
The Vacuum recloser tanks are manufactured from 304# grade stainless steel and are powder coated a light grey colour. Whole recloser IP67 protection class, equipped with a auxiliary plug to connect with recloser controller by control cable, Diameter Max22mm, 6 M length (8M for special).
It’s can performance serve more than 20 years long term under heavy duty circumstance.
● Main new advantages of RCW
Visible ON/OFF indicatorIP67 class waterproof plug connector
| 1.Apply ANSOFT design the high performance magnetic actuator,high reliable and free maintenance |
| 2.Manual closing device |
| 3.Automatic Blocking Device for Manual opening |
| 4.Mechanical locking device |
| 5.Electronic locking device |
| 6.Mechanical counter |
| 7.Electronic counter |
| 8.Visble on the ground reflector material mechanical open/closer indicator |
| 9.IP67 inflatable tank SF6 Gas insulation,Pneumatic value,barometer |
| 10.Integral type tank .Lifting lug, Earthing bolt |
| Note:The above parts are optional devices.Please provide requirement before placing an orde |
| Primacy incomer terminal (directly connect to interrupter reduce power lost) Current sensor (external modular design easy for quality control and maintenance) Accuracy: ±0.5% Ratio:800/1 |
|
Vacuum interrupter(Adopt the APG technology,increasing the whole insulation and weathering performance) |
| Internal Voltage sensors incorporated within the vacuum interrupter module It's equipped with two voltage sensors,one for measuring the voltage of incoming side,and another one for measuring the voltage of outgoing side. |
|
shielded 4-conductor cable connection Accuracy:±0.2% Voltage Sensor Ratio:500/1 or 1000/1 |
● Creepage Distances of RCW
| Description | 12kV BIL 75/95kV |
15kV BIL 95/110kV |
27kV BIL125/150kV |
38kV BIL 170/200kV |
| Terminal to terminal creepage | 600mm | 840mm | 1250mm | 1380mm |
| Terminal to ground creepage | 510mm | 760mm | 1200mm | 1300mm |
● Main technical data
| N | Item | Unit | Data | ||||
| 1 | Rated max voltage | kV | 12 | 15 | 27 | 38 | |
| 2 | Rated current | A | 630/800/1250 | ||||
| 3 | Rated frequency | HZ | 50/60 | ||||
| 4 | Power frequency 1min | Dry | kV | 45 | 55 | 65 | 95 |
| Wet | 30 | 45 | 55 | 80 | |||
| 5 | Lightning impulse withstand voltage(peak) | kV | 75/95* | 95/100* | 125/150* | 170/200* | |
| 6 | Rated short circuit breaking current | kA | 12.5/16/20/25* | ||||
| 7 | Rated short current switching current(peak) | kA | 31.5/40/50/63* | ||||
| 8 | Rated peak value withstand current | kA | 31.5/40/50/63* | ||||
| 9 | 4S short time withstand current | kA | 12.5/16/20/25* | ||||
| 11 | Rated operating circulate | O-0.5S-CO-2S-CO-2S-CO | |||||
| 10 | Breaking current frequency under rated short circuit | time | 200 | ||||
| 12 | Mechanism life | time | 10000 | ||||
| 13 | Secondary loop 1 min power frequency withstand | kV | 2 | ||||
| 14 | Auxiliary voltage supply | Vac | 220±20% | ||||
| 15 | Battery bank | Vdc | 12×2 | ||||
| 16 | Capacitor unit | Vdc | 220 | ||||
●Accessories of RCW
All above insulating components for BIL 200kV expanding using. Any question please contact with our engineer.
Upper voltage shield 3 pcs/set
Standard made of T2 copper material, for 630/1250A rated current using. With expanding range.
Terminal 6 pcs/set
Map guide&location Monitoring&Controlling
Setting & Modification Event Records
●Master software for Distribution Automation Management
