Auto Recloser
AUTO RECLOSERS
SEQUENT GLOBAL INC is an ISO 9001:2015 certified organization in market for the manufacturing of PMA unique
Structure mounted suitable for outdoor application, 3 Phase Vacuum Auto Recloser that are
Electric in power design
distribution and gang operated. The product is designed to meet allthe demands of Medium Voltage system. The Product is available in both 12kV as well as 36kV range. These are suitable for application in Primary Power Distribution / Secondary areas. Distribution both in urban and rural areas.
TECHNICAL PARAMETERS
| Main Characteristics | |||
|---|---|---|---|
| 1 | Unique single-box solution | 14 | Frequent switching suitability |
| 2 | Unit consists of gang-operated 3-pole vacuum auto recloser with CTs,control cabinet, PMA controller, battery & charger |
15 | Suitable for unmanned substations / locations |
| 3 | Operating mechanism with permanent magnetic actuator (PMA) |
16 | Suitable for urban / rural power distribution |
| 4 | 20,000 mechanical operations | 17 | Suitable for primary / secondary power distribution |
| 5 | Maintenance-free | 18 | Minimized downtime |
| 6 | Highly insulated hydrophobic cycloaliphatic epoxy resin cast bushings |
19 | Least lifecycle cost |
| 7 | Terminal connector suitable for overhead conductor / cable |
20 | Reduced total cost of ownership |
| 8 | Mechanical trip & lock-out facility | 21 | Increased availability |
| 9 | Compact with best space utilization | 22 | Increased revenue |
| 10 | Suitable for any kind of outdoor environment |
23 | Advantageous dry type CTs compared to oil CTs |
| 11 | Suitable for single, double pole or structure mounting |
24 | Advantage of multi-shot rapid auto-reclosing |
| 12 | Minimum installation time | 25 | Optionally used as a sectionaliser or feeder breaker |
| 13 | Enhanced electrical & mechanical life | 26 | Designed to suit SCADA / DMS compatibility |
| Protection Characteristics |
|---|
| 1. Directional / Non-directional 3-stage overcurrent protection |
| 2. Multiple trip curves for fast / delayed phase & earth fault |
| 3. 50 types of customised trip curves (IEC / ANSI) |
| 4. Definite time element |
| 5. Negative sequence overcurrent protection |
| 6. Sensitive earth fault (SEF) protection |
| 7. Cold load pick-up (CLPU) protection |
| 8. Inrush restraint element |
| 9. Sequence coordination |
| 10. Broken conductor protection |
| 11. Check synchronising element |
| 12. Auto reclosing facility up to 5 times |
| 13. 4 setting groups |
| 14. Automatic setting group change based on power flow direction |
| Control / Status Characteristics |
|---|
| 1. Local / Remote & Open / Close |
| 2. Recloser ON / OFF |
| 3. Protection ON / OFF |
| 4. Earth fault protection ON / OFF |
| 5. Reset |
| 6. Battery test |
| 7. Recloser status ON / OFF |
| 8. Control position – Local / Remote |
| 9. Fault indication (R, Y, B, N, SEF, Directional) |
| 10. Broken conductor |
| 11. Synchronisation fail |
| 12. Hot line |
| 13. Inrush detected |
| 14. Mechanical lock-out |
| Measurement / Storage / Communication Characteristics |
|---|
| 1. Source side voltage |
| 2. Load side voltage (optional) |
| 3. Current |
| 4. Active power (kW) |
| 5. Reactive power (kVAr) |
| 6. Apparent power (kVA) |
| 7. Active energy (kWh) |
| 8. Reactive energy (kVArh) |
| 9. Power factor |
| 10. Frequency |
| 11. Phase angle |
| 12. Harmonics (up to 32nd) |
| 13. Total harmonic distortion (THD) |
| 14. Over 20,000 event records |
| 15. Waveform record & fault recorder (up to 4 faults) |
| 16. Maximum demand – current |
| 17. Maximum demand – power |
| 18. SCADA: DNP 3.0, IEC 60870-5-101 / 104 (optional) |
| 19. Setting: MODBUS |
| Additional Salients |
|---|
| 1. External PT |
| 2. Lightning arrestors (on the incoming side) |
| 3. Lightning arrestors (on the outgoing side) |
| 4. Lightning arrestors (both sides) |
| 5. Internal / External CTs |
| 6. Tariff meter |
| 7. External FRTU |
| 8. MODEM |
| 9. Auto reclosers with 15 kV & 38 kV (60 Hz), IEEE / ANSI ratings – Optional |
| Mechanism Controller |
|---|
| 1. Micro-controller based |
| 2. In-built SMPS for capacitor charging |
| 3. High-capacity MOSFET for switching |
| 4. Operates on a wide range of auxiliary supply |
| 5. In-built trip circuit supervision |
| 6. In-built self-diagnosis |
| 7. In-built high-energy capacitor banks for closing / tripping |
| 8. PWM output to close / trip coils |
| 9. Optional output contacts for trip circuit healthy & PMA controller healthy |
| General Technical Particulars (GTP) | |||
|---|---|---|---|
| Sl.No. | Parameter | 12kV AR | 36kV AR |
| 1 | Rated Voltage | 12kV | 36kV |
| 2 | Rated Frequency | 50 / 60 Hz | 50 / 60 Hz |
| 3 | Rated one minute power frequency withstand voltage (wet) (kVrms) | 28 kV rms | 70 kV rms |
| 4 | Rated lightning impulse withstand voltage (1.2/50µs) (kVp) | 75 kV peak | 170 kV peak |
| 5 | Rated Current | 1250A | 1250A |
| 6 | Rated short circuit breaking capacity (kA) | 20kA | 20kA |
| 7 | Rated short circuit making capacity (kAp) | 50kA peak | 50kA peak |
| 8 | Rated short time withstand current for 3 sec. (kA) | 20kA / 3 sec | 20kA / 3 sec |
| 9 | Rated operating sequence | O–0.5sec–CO–2sec–CO–5sec–CO | |
| 10 | Closing time | < 65 ms | |
| 11 | Opening time | < 45 ms | |
| 12 | Mechanical life | 20,000 operations | |
| 13 | Electrical life at rated current | 20,000 operations | |
| 14 | Electrical life at 100% short circuit breaking capacity | 100 operations | |
| 15 | Auxiliary contact | 4 NO + 4 NC | |
| 16 | Interrupting medium | Vacuum | |
| 17 | Insulation medium | Solid dielectric | |
| 18 | Operating mechanism | Permanent magnetic actuator | |
| 19 | Degree of protection (switching unit) | IP55 | |
| 20 | Degree of protection (control cabinet) | IP55 | |
| 21 | Auxiliary voltage | 230V AC / 24V DC | |
| 22 | Standard | IS / IEC 62271-111 | |