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- Page 1 Release Date: Jan 2006 / Manual Revision: 1.10 EVR AUTOMATIC RECLOSER USER’S MANUAL ENTEC ENTEC ELECTRIC & ELECTRONIC CO., LTD Copyright © 2002 by ENTEC ELECTRIC & ELECTRONIC CO., LTD all right reserved. Forerunner Distribution & Automation...
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Page 3: Table Of Contents
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr TABLE OF CONTENTS GENERAL GUIDANCE......................5 1. INTRODUCTION ......................6 2. STANDARD RATINGS ....................7 3. CONSTRUCTION......................8 3.1. INTERRUPTER........................ 10 3.2. MAGNETIC ACTUATOR....................10 3.3. BUSHING ......................... 11 3.4. MANUAL TRIP/LOCKING DEVICE ................12 3.5. SF6 GAS ........................... 13 3.5.1. - Page 4 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 5.2.3. Contact life of vacuum interrupter................24 5.2.4. Resistance test on current carrying main circuit............. 24 5.2.5. High voltage insulation test ..................24 5.2.6. Operation test ......................25 5.2.7. Secondary current injection test ................25 5.3. INSTALLATION....................... 25 5.3.1-1.
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Page 5: General Guidance
If works need to be done after opening the control CUBICLE middle cover, turn the main circuit breaker (MCB) OFF to avoid any accident due to the high voltage. Avoid any flame work such as welding and brazing on EVR because the main tank is filled with SF6 gas for insulation. -
Page 6: Introduction
1. INTRODUCTION This manual contains the information required for installation, operation, and maintenance of ENTEC EVR Automatic Recloser. EVR is designed to be powered from AC 110/220V low voltage distribution line. EVR complies with the international standard specifications and ratings. -
Page 7: Standard Ratings
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 2. STANDARD RATINGS The standard ratings of EVR Recloser are as follows; Table 2-1. STANDARD RATINGS Maximum system voltage 15kV 27kV 38kV Rated frequency 50/60Hz 50/60Hz 50/60Hz Rated continuous current 630A 630A 630/800A Rated short circuit interrupting current 12.5/16kA... -
Page 8: Construction
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 3. CONSTRUCTION The Recloser can be mounted on an outdoor pole by assembling a mounting bracket connected to the top of main tank and also installed at substation with substation mounting frame. The vacuum interrupter, magnetic actuator, and current transformer (CT) are contained in the TIG-welded main tank and filled with SF6 gas for the insulation of recloser main tank. - Page 9 EVR is powered by AC 110/220V low voltage distribution line source without an additional transformer and is designed to consume low energy to operate reclosing and remote control. Thus EVR does not need any extra cost for installation of additional transformer, in case, low voltage source by utility is available.
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Page 10: Interrupter
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 3.1. INTERRUPTER The vacuum interrupter of the recloser can provides versatilities to operate trip/close with the ratings and capacity based on the fully capable of interruption. The closing status of the contacts is held by contact springs that provide the required force at all condition of contact wear. -
Page 11: Bushing
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr The permanent magnetic actuator mechanism has just one moving part. Thus the dramatic reduction in part gives a corresponding increase in reliability. Especially, as the actuator uses magnetic latching and uses trip and close coil separately, the actuator consists of the fewest components and can provides zero-maintenance operation. -
Page 12: Manual Trip/Locking Device
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 3.4. MANUAL TRIP/LOCKING DEVICE During control circuit faults or line repair, users can locally trip or lock the Recloser with the manual Trip/Locking device positioned on the front side of main tank. It can be manually operated by COS hot stick. -
Page 13: Sf6 Gas
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 3.5. SF6 GAS 3.5.1. General The high purity SF6 gas filled with 0.5bar gauge keeps the insulation of the equipment and prevent corrosion of the main tank components. 3.5.2. Specification of Sulphur Hexa Fluoride Gas (SF6) Table 3-1. -
Page 14: Sf6 Gas Pressure-Temperature Curve
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 3.5.3. SF6 gas pressure-Temperature Curve S a f t y d e v i c e o p e r a t i n g p r e s s u r e N o r m a l... -
Page 15: Battery And Battery Charger
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr Typical properties shows as follows; Table 3-3. Typical properties Typical properties Nominal pore diameter 9 angstrom(0.9㎜) Type of crystal structure hexagonal Bulk density 680g/ℓ Water content(as shipped) 1.5% wt (max) Heat of absorption(max) 4200kj/kg·water 2.5∼5㎜, 2∼3㎜, 1∼2㎜... -
Page 16: Control Cubicle
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 3.8. CONTROL CUBICLE The Recloser control cubicle is designed for outdoor pole mounted and substation operation which is made of anti-corrosion stainless steel. The door is locked with three position locking devise and sealed with replaceable urethane foaming packing. -
Page 17: Auxiliary Power Supply
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr The control cubicle must not installed outdoors without the sunshine shield cover in the places of solar heating. Detailed control and relay, Please refer to our separate EVRC2A manual. The control cubicle is shown in Figure 3-5 on previous page. - Page 18 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 110V OR 220V 500VA Epoxy Mold Transformer EARTH TERMINAL MOUNTING BRACKET EARTH CABLE CONTROL CABLE THE DIGITAL CONTROL CUBICLE OF RECLOSER Figure 3-6. Auxiliary power supply ENHANCED TECHNOLOGY...
- Page 19 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr AUX. TRANSFORMER EARTH TERMINAL 110V OR 220V 5KVA Tr. or MOUNTING BRACKET LOW VOLTAGE SOURCE SUPPLIED BY UTILITYE EARTH CABLE CONTROL CABLE THE DIGITAL CONTROL CUBICLE OF RECLOSER Figure 3-7. Auxiliary power supply ENHANCED TECHNOLOGY...
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Page 20: Gas Filling Valve
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 3.10. GAS FILLING VALVE This valve is on the side of the recloser tank and “CARE” must be paid, not to be opened with protection cap for preventing the gas leakage on the filling value. SF6 gas filling valve detail is shown in Figure 3-8. -
Page 21: Packing, Handling And Storage
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 4. PACKING, HANDLING AND STORAGE 4.1. PACKING AND DESPATCH Each recloser is normally packed in one non returnable case or wooden crate for exporting and in home is mounted on a transit pallet. The recloser is despatched in the closed position for convenience and filled with SF6 gas to the commissioning pressure before despatch. -
Page 22: Receiving
On receipt, the recloser should be checked for the contents of deficiency or damage during transportation. Please inform within 3 days to either the carriers, supplying agent or customer services department of the ENTEC Electric & Electronic Company., Ltd., if any damage was found. 4.4. STORAGE As the recloser is designed for outdoor use, it can be stored both outdoor and indoor but the recloser should not be stored in a wet place and should not stacked up doubled. -
Page 23: Installation
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 5. INSTALLATION 5.1. INSPECTION BEFORE INSTALLATION 5.1.1. General Upon receipt of the recloser, a visual inspection for damage during transportation should be paid for the followings. 1) Circuit breaker - Bushings - Bulkhead fitting and connectors... -
Page 24: Battery Check
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 1) If the gas pressure is above 0.1bar gauge, the filling of SF6 gas should be done directly with attaching the gas handling equipment and fill upto the required pressure. 2) If the gas pressure is below 0.1bar gauge, a vacuum must be drawn out of the tank before filling SF6 gas. -
Page 25: Operation Test
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr One minute dry withstand voltage supply should be applied across each phase of the open position and between each phase and earth in the closed position of the recloser. The recommended site test voltage is 75% of the factory test voltage. - Page 26 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr CAUTION: If the manual trip lever is pulled approximately 45 degrees, the recloser will trip and may either be returned to the horizontal for normal operation. If the Trip lever is pulled to the latched position(locking), without releasing the trip lever to normal, no close operation occurs.
- Page 27 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr Pole Mounting Bracket Hanger Band Control Cable Earth Cable Cable Cleats Control Cubicle Manual trip & locking device Figure 5-2. Pole Mounting Detail CAUTION: In Installation of recloser, Source Side of user system and recloser Source Side shall be matched in order to have a precise metering.
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Page 28: Substation Mounting Frame
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 5.3.1-2. Substation mounting frame If required, substation mounting frame can be supplied together with the recloser. Please assemble the mounting frame and adjust the height of mounting the recloser. Fasten tightly the recloser to the mounting frame with enclosed M16 bolts and nuts. -
Page 29: Surge Arrester Mounting Frame
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 5.3.1-3. Surge Arrester mounting frame Mounting brackets are supplied for Surge Arrester on the recloser tank, if required. LOCK TRIP TOP VIEW Figure 5-4. Surge Arrester mounting frame ENHANCED TECHNOLOGY... -
Page 30: Control Cubicle
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 5.3.2. Control cubicle The control cubicle should be lifted using the mounting bracket and mounted with similarities using the procedure for the tank. When the control cubicle and the tank is mounted to the pole securely, then the umbilical cable plug may be connected as shown in Figure 5-2 and Figure 5-3. -
Page 31: Earthing
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr The total length of the inter-connecting multi-core cable would be 6 meters as standard and the longer cable is available upon request by client as option. The fixing arrangement multi-core cable should be tightened by using tie band with every 1000㎜... - Page 32 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr AUX. TRANSFORMER RECLOSER EARTH TERMINAL EARTH TERMINAL EARTH CABLE CONTROL CABLE THE DIGITAL CONTROL CUBICLE OF RECLOSER EARTH TERMINAL EARTH TEE OFF Figure 5-6. Earthing layout ENHANCED TECHNOLOGY...
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Page 33: High Voltage Connection
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 5.3.4. High voltage connection Before installation, all terminals and connectors should be cleaned and prepared to be able to keep low resistance connection. Please refer to bushing assembly drawings shown in Figure 5-7. Porcelain Bushing The high voltage bare conductor should be placed in the hole of the universal clamp and fastened with nut upto tensile torque of 400kg-cm. - Page 34 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr Figure 5-7. Bushing assembly ENHANCED TECHNOLOGY...
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Page 35: Recloser Operation
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 6. RECLOSER OPERATION 6.1. GENERAL The recloser with the microprocessor-based digital control technology is designed to provide automatic distribution reclosing system for maximum continuity of electric service, please refer to EVRC2A manual in details. 6.2. OPERATION PROCEDURE 1) Ensure that all programmable settings of the relays meet the user's requirements. -
Page 36: Maintenance
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 7. MAINTENANCE 7.1. GENERAL 1) The recloser has been designed as a low maintenance unit and using single moving part as adopting magnetic actuator mechanism does not require major maintenance like overhaul. 2) The control and relay maintenance, please refer to operation and maintenance instructions for EVRC2A. - Page 37 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr Actually since most faults are considerably lower than the maximum fault current and number of faults are considerably fewer than the guaranteed number of faults. The service life is expected to be much longer than the contact life of vacuum interrupter calculated by the amount of contact wear.
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Page 38: Sf6 Gas Refilling
EVR AUTOMATIC RECLOSER http://www.entecene.co.kr 7.4. SF6 GAS REFILLING 7.4.1. General The recloser is filled with SF6 gas 0.5bar gauge pressure at 20℃. When the pressure of SF6 gas in the recloser tank is below 0.2bar gauge at 20℃, the instruction of refilling SF6 gas is as follows. - Page 39 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr Table. Replaceable spare parts (1/2) Part Supplier / Description Part No. Epoxy Bushing ENTEC EVR-SP0001 Epoxy Bushing clamp ENTEC EVR-SP0002 Clamp Packing ENTEC EVR-SP0003 Insulation Housing 500m/m (EPDM) ENTEC / 15kV EVR-SP0004 Insulation Housing 500 m/m (Silicon)
- Page 40 EVR AUTOMATIC RECLOSER http://www.entecene.co.kr Table. Replaceable spare parts (2/2) Part Supplier / Description Part No. Communication Cable (CC202) ENTEC EVR-SP0031 Communication Cable (CC203) ENTEC EVR-SP0032 Firmware Upgrade Tools ENTEC EVR-SP0033 ENHANCED TECHNOLOGY...
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