DAELIM GREEN EP TECH Operation & Maintenance Manual
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DAELIM GREEN EP TECH Operation & Maintenance Manual

Single phase & three phase pad-mount liquid compartmental transformer
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北 京 大 林 绿 源 环 保 科 技 有 限 公 司
BEIJING DAELIM GREEN EP TECH CO., LTD.
Operation & Maintenance Manual
Filled
SinglePhase & Three Phase Pad-mount Liquid
Compartmental Transformer
KVA: Up to 2500 KVA
Primary Voltage: Up to 34.5 KV
BIL: Up to 200 KV
No.4 Business Building-2707, China Central Place
Email:info@daelim-electric.com
Chaoyang District, Beijing-100021, China

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  • Page 1 北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Operation & Maintenance Manual Filled SinglePhase & Three Phase Pad-mount Liquid Compartmental Transformer KVA: Up to 2500 KVA Primary Voltage: Up to 34.5 KV BIL: Up to 200 KV No.4 Business Building-2707, China Central Place...

  • Page 2: Table Of Contents

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Contents Safety Information................................. 4 General Information..............................5 Acceptance and Inspection upon Receipt......................5 Proper Handling and Unloading...........................5 Moving transformers shippedon pallets..................... 5 Lifting transformers by crane or hoist......................
  • Page 3 北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Switching and Protection Devices..........................20 Tap Changers...............................20 Load Break Oil-Immersed Rotary Switches (LBOR)..................21 Two-Position LBOR Switch........................21 Four-Position LBOR Switch “Sectionalizing Switch”................22 Dual Voltage Switch.............................23...
  • Page 4 北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Routine Inspection...............................33 Dielectric Fluid Sampling............................ 34 No.4 Business Building-2707, China Central Place Email:info@daelim-electric.com Chaoyang District, Beijing-100021, China...

  • Page 5: Safety Information

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 1. Safety Information: Theinstructions in this manual are not intended asasubstituteforpropertrainingor adequateexperience in the safe operation of the equipment described. Only competent technicians who are familiar with this equipment should install, operate, and service it.

  • Page 6: General Information

    BEIJING DAELIM GREEN EP TECH CO., LTD. 2. General Information: 2.1 Acceptance and Inspection upon Receipt: All Daelim transformers are thoroughly tested and rigorously inspected before shipment from the factory to ensure the highest quality. Upon receipt: 1. Thoroughly check all materials against the bill of lading.

  • Page 7: Lifting Transformers By Crane Or Hoist

    Lifting transformers by crane or hoist Lifting lugs, welded to all transformer tanks, are designed and provided for lifting the complete unit as shipped.Daelim recommends lifting by these lugs as the primary means of movement. Care should be taken toensurestraps,chains,andcablesusedtolifttheunitsareinspectedpriortouse. Allstraps,chains,cables, and lifting devices should be in good working order with sufficient capacity to perform the job intended.

  • Page 8: Storage For More Than 90 Days

    3.3 Removable Radiators Daelim ships all transformers, when possible, completely assembled and ready for use. In the event that removableradiatorsareshippedseparatelytoaccommodateshippingorspacerequirements,radiator openings are shipped with temporary protective caps. Ensure these protective caps are tightly sealed before storage.

  • Page 9: Location Consideration

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 4.2 Location Consideration Theunitshouldnotbeplacedwithin36inchesofanyobstructionsandampleroomshouldbeprovidedforthe removal of cabinets,covers, andinspection hatches.Ample roomshould be available toperform periodic maintenance inspections and perform repairs as needed. Proper ventilation should be considered to prevent overheating of the unit.

  • Page 10: Ground Connection

    An energized tank is extremely dangerous. Contact with an energized tank can shock, burn, or cause death. Daelim transformers are equipped with at least two ground pads (Fig. 1) or two ground bosses (Fig. 2) depending on transformers size. One in the primary side and the other in the secondary side.

  • Page 11: Low Voltage Connection

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Low Voltage Connection Spade Terminals ranging from two holes to twenty holes are normally provided for low voltage connection to padmount transformers.

  • Page 12: Fill Plug/Filler Valve With Schrader Valve

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 5.2 Fill Plug/Filler Valve with Schrader Valve Fill Plug with Schrader Valve (Fig. 4 A) or Filler Valve with Schrader Valve (Fig. 4 B) is provided to facilitate addition of dielectric fluid and Nitrogen to the tank.

  • Page 13: Liquid Level Gauge

    Fig. 6 Daelim utilizes several different brands and models of liquid level gauges depending on the application. Transformers can be supplied with a standard gauge or more sophisticated models with either one or two SPDT (Single Pole Double Throw) alarm contacts to facilitate external monitoring.

  • Page 14: Temperature Gauge

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 5.5 Temperature gauge The temperature gauge (Fig. 7) is supplied to indicate the dielectric fluid temperature in degrees centigrade at the top of the oil column.

  • Page 15: Pressure Vacuum Gauge

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 5.6 Pressure Vacuum Gauge The pressure vacuum gauge (Fig. 8) indicates whether the head space pressure inside the tank is positive, negative or neutral.

  • Page 16: Pressure Relief Device (Prd)

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 5.7 Fault Pressure Relief Device (FPRD) Also commonly referred to as an Explosion Relief Device (Fig.9), this device facilitates the rapid release of gas pressure in the event of an internal fault.

  • Page 17: Rapid Pressure Rise Relay (Rprr) With Seal-In Relay

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 5.8 Rapid Pressure Rise Relay (RPRR) with Seal-in relay ThisRPRR(Fig.10)isadevicefordetectionofsuddenpressureeventsbasedontherateofpressurerisein The transformer. When a dangerous pressure rise has been detected, the rapid pressure rise relay (RPRR) will change state.

  • Page 18: Winding Temperature Indicator

    BEIJING DAELIM GREEN EP TECH CO., LTD. 5.9 Winding Temperature Indicator Daelim utilizes a digital winding temperature monitor (Fig. 11), this system consists of thermocouples wound into each coil of the transformer in strategic locations to accurately monitor the temperature inside the coil itself.

  • Page 19: Forced Air Cooling Fans

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 5.10 Forced Air Cooling Fans Forced Air Cooling Fans (Fig. 12) are provided optionally for units supplied with radiators to increase the KVA capacityofthetransformerbyupto25%withoutoverheatingorexperiencingdetrimentaleffects.Thesize...

  • Page 20: Current Transformers & Meter Sockets And Watt-Hour Meters

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 5.11 Current Transformers & Meter Sockets and Watt-Hour Meters. Padmount transformers may be equipped with CT’s for various reasons such as metering or relaying, they also may be equipped with meters mounted on the transformer.

  • Page 21: Switching And Protection Devices

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 6. Switching and Protection Devices ELECTRICAL SHOCK: Can cause severe injury, death, or damage to equipment. De-energize transformer Fromaremoteupstreamsourcebeforeoperatingno-loadtap-changers,dual-voltageswitches,or Delta-wye switches.

  • Page 22: Load Break Oil-Immersed Rotary Switches (Lbor)

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 6.2 Load Break Oil-Immersed Rotary Switches (LBOR) WARNING: Do not operate load break equipment if a fault condition is suspected. Doing so can cause an explosion or fire.

  • Page 23: Four-Position Lbor Switch "Sectionalizing Switch

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Four-Position LBOR Switch “Sectionalizing Switch” The Four-Position LBOR Sectionalizing Switch (Fig. 16 A & B) is provided optionally in loop-feed padmount transformerstoselectthefeedsource,openorclosethefeed-thruloopandopenorclosethetransformer.

  • Page 24: Dual Voltage Switch

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 6.3 Dual Voltage Switch WARNING:Excessive currentcancause damage totransformer winding.Tap-changers andother switches must be in the position shown on the transformer nameplate.

  • Page 25: Delta-Wye Switch

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 6.4 Delta-Wye Switch WARNING:Excessivecurrentcancausedamage totransformer winding.Tap-changers and other switches must be in the position shown on the transformer nameplate.

  • Page 26: Surge Arresters

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 6.5 Surge Arresters ELECTRIC SHOCK: Can cause severe injury, death, or damage to equipment. De-energize transformer from a remote upstream source before servicing or operating surge arresters or disconnect switches.

  • Page 27: Live Front Surge Arresters

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Live front Surge Arresters Live front Surge Arrester (Fig. 19 B) is a polymer that houses a metal oxide Varistor to provide overvoltage system protection to Live front padmount transformers.

  • Page 28: Fusing

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Fusing ELECTRIC SHOCK: Can cause severe injury, death, or damage to equipment. Use a hotstick to service a Bay-O-Netfuse.Donotinstallafusetocompleteanelectricalcircuit ifafault conditionissuspected.

  • Page 29: Bay-O-Net Fuse Replacement Instruction (Fig. 17 B)

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Bay-O-Net fuse replacement instruction (Fig. 20 B): 1. Reliefpressureinthetransformertankbypullingoutthepressurereliefvalvefor30secondsoruntil the hissing sound of the valve stops. 2. Repeat step 1 to insure any residual pressure is released.

  • Page 30: Non-Loadbreak Dry-Well Canister Fuse Replacement Instruction (Fig. 18 B)

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. Non-LoadbreakDry-WellCanisterFusereplacementinstruction(Fig.21 1. De-energize transformer from a remote upstream source 2. Disassemble by loosening 4 set screws 3. Attach a hot stick to the fuse holder eye and pull out 4.

  • Page 31: Dielectric Fluid

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 7. Dielectric Fluid 7.1 Type II MineralOil Padmount transformers filled with mineral oil that complies with ASTM D-3487, TYPE II.

  • Page 32: Factory Testing

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 8. Factory Testing CAUTION: The information below is not intended to be as a guideline for testing transformers, please refer to IEE/ANSI C57.12.90-2006 and...

  • Page 33: Dielectric Strength

    北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. operation.Impedancevoltageisusuallyexpressedinperunitorinpercentoftheratedvoltageofthewinding across which the voltage is applied and measured Dielectric Strength The dielectric test of the transformer is intended to check the ability of main insulation to earth, inter turn and line end insulation to earth.

  • Page 34: Audible Sound Level

    If paint damage or deterioration has occurred, touch-up or repaint the exterior of the unit as soon as possible to prevent further degradation.Daelim uses several different painting processes depending on the application. An inquiry to the factory, with the serial number of the unit, will determine the type and compatibility of the touch-up paint required.
  • Page 35 北 京 大 林 绿 源 环 保 科 技 有 限 公 司 BEIJING DAELIM GREEN EP TECH CO., LTD. 9.3 Dielectric Fluid Sampling Dielectric fluid samples should be taken at least on an annual basis and analyzed by DGA (Dissolved Gas Analysis).

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