Transcription
Buck–Boost TransformersSolaHD Buck-Boost Transformers are small, single phase,dry type distribution transformers designed and shipped asinsulating/isolating transformers. They have a dual voltageprimary and a dual voltage secondary. These transformerscan be connected for a wide range of voltage combinations.The most common use is to buck (lower) or boost (raise)the supply voltage a small amount, usually 5 to 27%.Buck-boost transformers are in compliance with NECArticle 210.9, Exception 1 when field connected asan autotransformer.The major advantages of buck-boost transformers are theirlow cost, compact size and light weight. They are also moreefficient and cost less than equivalent isolation transformers.When connected as an autotransformer, they can handleloads up to 20 times the nameplate rating. A buck-boosttransformer is the ideal solution for changing line voltage bysmall amounts.When a buck-boost has the primary and secondary windingsconnected, per recommended instructions, it becomes anautotransformer. Now, only the secondary windings aretransforming voltage and current. The majority of the kVAload passes directly from the supply to the load. This is thereason buck-boost transformers can supply a load with amuch larger kVA rating than the nameplate indicates.Low voltage lighting control applicationsSolaHD Buck-Boost Transformers are designed to supplypower to low voltage lighting circuits, control panels orother systems requiring 12, 16, 24, 32, or 48 Volts. Whenconnected as an insulating transformer (by following thewiring diagram located after the specification tables on theinside of the transformer case), the transformer’s capacitymatches the nameplate kVA rating.SolaHD Buck-Boost Transformers are also suited for lowvoltage landscape lighting. They are UL Listed for outdoorservice and their compact size makes them the perfectsolution for providing power to accent lighting applications.Electrical connection diagrams are shown at the end ofthis section.Use dimmers on the output of the transformer that aredesigned and rated for use with magnetic loads. We stronglyrecommend contacting the dimmer manufacturer for adviceon your specific lighting application.Certifications and Compliances 236Listed- UL 506- CSA C22.2 No. 66E77014Accessories Surge Protective Devices Active Tracking FiltersSelection Steps1. Input Line VoltageMeasure the supply voltage with a voltmeter.2. Voltage Required for the LoadCheck the load equipment to determine the voltagerequirement.3. kVA or Ampere Rating of the LoadFind either the load kVA or the load amperagerequirements. This information is listed on thenameplate of the load equipment.4. FrequencyEither 50 or 60 Hz. The frequency of the transformermust match the frequency of the load.5. Number of PhasesSingle or three phase line and load must match(a transformer cannot convert single to three phase.)A common application is to make a single phaseconnection from a three phase supply by using onephase of the three phase supply circuit. Be careful notto overload that phase of the three phase supply. Forbuck-boost applications the supply must provide loadkVA – not just the nameplate rating of the buck-boost.Refer to the Selection Tables on the following pages.Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersThree phase, buck-boost applications require two or threetransformers. Check the “Quantity Required” column of theThree Phase Selection Tables for the exact quantity.Fusing Buck-Boost TransformersFor determining the correct size of breaker or fuse for a givenrange of input or output ampere ratings, refer to Section450.4, of the National Electric Code (NEC).Where an overcurrent protection device is required, theelectrical connections and selection tables will referenceappropriately.Using the Selection Tables1. Determine if you are trying to Boost (raise) or Buck(lower) your voltage. Select an input/output voltagecombination that comes closest to matching yourapplication from the appropriate single or three phasecharts on the following pages.2. Move across your selected input/output voltage row tothe amperage or kVA rating closest to, but greater thanthe rating required by your load.3. Reading the top of the column will give you thecatalog number of the exact buck-boost transformeryou need. See the Specification Tables on thenext page.4. Connect the transformers according to the diagramindicated. See the Electrical Connections section at theend of this section. Connection diagrams are packedwith each transformer.Overcurrent devices OC-1a and OC-1b are shown correctly installedin accordance with NEC 450.4. Locating an overcurrent device in series withthe shunt winding anywhere between A and B is not permitted. The shuntwinding is the winding common to both the input and the output circuits.Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018237
Buck–Boost TransformersSpecification TablesGroup 1 – 120 x 240 Volt Primary, 12/24 Volt SecondaryMaximum Secondary AmperageKVACatalog Number12 V24 VHeightin (mm)Widthin (mm)Approx. ShipWeightlbs (kg)DesignStyleElecConn3.00 (76.2)2.0 (0.91)21Depthin (mm)Non-Encapsulated - 50/60 Hz, Single Phase0.05HS19B504.162.086.00 (152.4)4.00 (101.6)0.1HS19B1008.334.166.00 (152.4)4.00 (101.6)3.00 (76.2)4.0 (1.82)210.15HS19B15012.56.257.50 (190.5)4.00 (101.6)4.00 (101.6)5.0 (2.27)210.25HS19B25020.810.47.50 (190.5)4.00 (101.6)4.00 (101.6)8.0 (3.64)210.5HS19F500B41.620.810.00 (254.0) 6.00 (152.4)5.00 (127.0)22.0 (10.00)310.75HS19F750B62.531.210.00 (254.0) 6.00 (152.4)5.00 (127.0)27.0 (12.27)31HS19F1B83.341.610.00 (254.0) 6.00 (152.4)5.00 (127.0)28.0 (12.73)31Encapsulated - 60 Hz, Single Phase11.512562.512.00 (304.8) 10.00 (254.0) 7.00 (177.8)38.0 (17.27)41HS19F2A166.683.312.00 (304.8) 10.00 (254.0) 7.00 (177.8)45.0 (20.45)413HS19F3A25012512.00 (304.8) 10.00 (254.0) 7.00 (177.8)55.0 (25.00)415HS19F5A416.5208.317.00 (431.8) 14.00 (355.6) 9.00 (228.6)100.0 (45.45)41625312.517.00 (431.8) 14.00 (355.6) 9.00 (228.6)135.0 (61.36)41Approx. ShipWeightlbs (kg)DesignStyleElecConn27.5HS19F1.5AHS19F7.5AGroup 2 – 120 x 240 Volt Primary, 16/32 Volt SecondaryMaximum Secondary AmperageKVACatalog Number16 V32 VHeightin (mm)Widthin (mm)Depthin (mm)Non-Encapsulated - 50/60 Hz, Single Phase0.15HS20B1509.384.698.00 (203.2)4.00 (101.6)4.00 (101.6)6.0 (2.73)220.25HS20B25015.67.818.00 (203.2)4.00 (101.6)4.00 (101.6)8.0 (3.64)22Encapsulated - 60 Hz, Single Phase0.50.7511.5HS20F500B31.215.610.00 (254.0) 6.00 (152.4)5.00 (127.0)22.0 (10.00)32HS20F750B46.823.410.00 (254.0) 6.00 (152.4)5.00 (127.0)27.0 (12.27)32HS20F1B62.531.210.00 (254.0) 6.00 (152.4)5.00 (127.0)28.0 (12.73)32HS20F1.5A93.746.812.00 (304.8) 10.00 (254.0) 7.00 (177.8)38.0 (17.27)422HS20F2A12562.512.00 (304.8) 10.00 (254.0) 7.00 (177.8)45.0 (20.45)423HS20F3A187.593.712.00 (304.8) 10.00 (254.0) 7.00 (177.8)55.0 (25.00)42HS20F5A31215617.00 (431.8) 14.00 (355.6) 9.00 (228.6)100.0 (45.45)42HS20F7.5A46823417.00 (431.8) 14.00 (355.6) 9.00 (228.6)135.0 (61.36)4257.5Note: Weights and dimensions may change and should not be used for construction purposes.238Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersSpecification Tables – continuedGroup 3 – 240 x 480 Volt Primary, 24/48 Volt SecondaryKVACatalogNumberMaximum Secondary Amperage24 V48 VHeightin (mm)Widthin (mm)Depthin (mm)Approx. ShipWeightlbs (kg)DesignStyleElecConnNon-Encapsulated - 50/60 Hz, Single Phase0.15HS22B1506.253.138.00 (203.2)4.00 (101.6)3.00 (76.2)5.0 (2.27)230.25HS22B25010.45.28.00 (203.2)4.00 (101.6)3.00 (76.2)8.0 (3.64)23Encapsulated - 60 Hz, Single Phase0.50.7511.5HS22F500B20.810.48.00 (203.2)6.00 (152.4)5.00 (127.0)22.0 (10.00)33HS22F750B31.215.610.00 (254.0)6.00 (152.4)5.00 (127.0)27.0 (12.27)33HS22F1B41.620.810.00 (254.0)6.00 (152.4)5.00 (127.0)28.0 (12.73)33HS22F1.5A62.531.212.00 (304.8) 10.00 (254.0)7.00 (177.8)38.0 (17.27)432HS22F2A83.341.612.00 (304.8) 10.00 (254.0)7.00 (177.8)45.0 (20.45)433HS22F3A12562.512.00 (304.8) 10.00 (254.0)7.00 (177.8)55.0 (25.00)43HS22F5A20810417.00 (431.8) 14.00 (355.6)9.00 (228.6)100.0 (45.45)43HS22F7.5A31215617.00 (431.8) 14.00 (355.6)9.00 (228.6)135.0 (61.36)4357.5Note: Weights and dimensions may change and should not be used for construction purposes.Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018239
Buck–Boost TransformersElectrical Connections for Low Voltage Applications120 X 240 Volt Primary,12/24 Volt SecondaryTaps: None1 Earth Ground120 X 240 Volt Primary,16/32 Volt SecondaryTaps: None2240 X 480 Volt Primary,24/48 Volt SecondaryTaps: 2X4PrimaryVoltageInterconnectConnectLines ToPrimaryVoltageInterconnectConnectLines ToPrimaryVoltageInterconnectConnectLines To240H2 to H3H1 & H4240H2 to H3H1 & H4480H2 to H3H1 & H4120H1 to H3H2 to H4H1 & H4120H1 to H3H2 to H4H1 & H4240H1 to H3H2 to H4H1 & H4SecondaryVoltageInterconnectConnectLines ToSecondaryVoltageInterconnectConnectLines ToSecondaryVoltageInterconnectConnectLines To24X2 to X3X1 & X432X2 to X3X1 & X448X2 to X3X1 & X412-0-12X2 to X3X2 toX1-X2-X416-0-16X2 to X3X2 toX1-X2-X424-0-24X2 to X3X2 toX1-X2-X412X1 to X3X2 to X4X1 & X416X1 to X3X2 to X4X1 & X424X1 to X3X2 to X4X1 & X4HS19 and S19 Series240HS20 and S20 SeriesHS22 and S22 SeriesVisit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersDesign StylesStyle 2 - Non-EncapsulatedStyle 3 - EncapsulatedStyle 4 - EncapsulatedCustom Design StylesStyle 5 - EncapsulatedAvailable for all encapsulated kVA sizes (For Type 4, 12 and 4X)Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018241
Buck–Boost TransformersSelection Tables: Single PhaseTable 1: Using Group 1 (120 x 240 V Primary, 12/24 V Secondary) �dConnectionDiagram *ApplicationDataCatalog 0.250.50.751.252.53.755.0Load amps2.084.166.2510.420.831.241.6Fuse .510.0Load amps4.168.3312.520.841.662.583.3Fuse 64.336.498.65Load 045.060.0kVA0.871.732.64.338.6513.017.3Load amps4.168.3312.520.841.662.583.3Fuse Size1972081C1Fuse Size208218 .951.432.384.777.159.54Load amps2.084.166.2510.420.831.241.6Fuse 0.045.060.020.0Load ampsFuse SizekVA2292401C1Load ampsFuse .36.015.020.030.060.090.0110.0BUCKING132 **144 .0Load amps4.589.1613.7522.945.868.791.6Fuse 6.0Load amps2.55.07.512.52537.550.0Fuse 4.777.159.54Load 040.060.0Fuse Size252 **264 **24024011C2D2kVA1.042.13.155.2510.515.721.0Load amps4.348.7513.1321.843.765.687.5Fuse 55.58.2511.0Load 040.060.0Fuse Size* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).242Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersSelection Tables: Single PhaseTable 1: Using Group 1 (120 x 240 V Primary, 12/24 V Secondary) �dConnectionDiagram *ApplicationDataCatalog INGkVA1001201B1Load ampsFuse SizekVA109189197208218 0.0500.015.020.030.049.975.0Load amps125.0167.0250.0416.0625.0Fuse 4.9Load amps62.583.3125.0208.0312.0Fuse .0Load amps125.0167.0250.0416.0625.0Fuse 1.4Load amps62.583.3125.0208.0312.0450.0Fuse Size90.0125.0175.0300.0kVA15.020.030.049.974.9Load amps62.583.3125.0208.0312.0Fuse .0Load amps125.0167.0250.0416.0625.0Fuse Size175.0225.0350.0600.01000.0BUCKINGkVA132 **1201A216.522.033.054.982.5Load amps137.5183.3275.0457.6687.5Fuse Size175.0225.0350.0600.0800.0kVA144 **229252 **264 **1202082402401111B2D2C2D2Load e 4Load amps68.891.6137.5228.8343.2Fuse 7.5Load amps131.3174.9262.5436.8656.3Fuse .6Load amps68.891.6137.5228.8343.2Fuse Size80.0110.0175.0300.0400.0* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018243
Buck–Boost TransformersSelection Tables: Single PhaseTable 2: Using Group 2 (120 x 240 V Primary, 16/32 V Secondary) �dConnectionDiagram *ApplicationDataCatalog STING951201B1kVA0.60.91.92.83.8Load amps4.77.815.623.431.250.0Fuse d .24.96.5Fuse SizekVA1832081D1Load ampsFuse 515.025.045.070.090.0kVA1.11.83.75.57.4Load 511.215.0Load ampskVA2721D131.245.02.0Fuse Size240 **23.435.09.4Fuse Size24015.625.0kVAkVA2257.815.0Load ampsFuse Size2084.710.0Load ampsFuse INGkVA136 **152 **12012011A2B21.32.14.26.48.5Load amps10.617.735.453.270.8Fuse Size80.015.020.040.060.0kVA0.71.22.43.64.7Load 75.57.4Fuse SizekVA2362081D2Load amps5.38.917.726.535.4Fuse Size6.015.020.030.040.0kVA256 **272 **24024011C2D22.44.08.012.016.0Load amps10.016.633.350.066.7Fuse Size15.020.040.060.080.0kVA1.32.14.26.48.5Load amps5.38.817.726.535.410.015.020.030.040.0Fuse Size* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).244Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersSelection Tables: Single PhaseTable 2: Using Group 2 (120 x 240 V Primary, 16/32 V Secondary) �dConnectionDiagram *ApplicationDataCatalog 37.456.2Load 0.0Load 0Fuse Load 0.011.014.722.036.855.2Load amps46.862.593.7156.0234.0Fuse 3Load amps93.7125.0187.5312.0468.0700.0Fuse Size240 **28.046.8kVA23618.780.0Fuse Size20811.2Load ampskVA2087.5Fuse SizeFuse 3.6Load amps46.862.593.7156.0234.0Fuse kVA136 **1201A2Load amps106.2141.7212.5353.6530.4Fuse 152 **236256 **120208240111B2D2C2Load amps59.479.2118.8197.6296.4Fuse Load amps53.270.9106.4177.0265.5Fuse 8Load 0.012.817.025.542.463.6Fuse SizekVA272 **2401D212.7Load amps53.270.8106.3176.8265.2Fuse Size60.080.0125.0200.0300.0* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018245
Buck–Boost TransformersSelection Tables: Single PhaseTable 3: Using Group 3 (240 x 480 V Primary, 24/48 V Secondary) �dConnectionDiagram *ApplicationDataCatalog 52.503.744.99BOOSTING200230 **24027711B1B1kVA0.75Load amps3.105.2010.4015.6020.80Fuse 6Load 00kVA1.201.983.955.937.90Load amps3.105.2010.4015.6020.80Fuse .81Load amps6.3010.4020.8031.2041.60Fuse Size34636238038011D1C1Fuse Size378436458 302.164.336.498.65Load amps3.105.2010.4015.6020.80Fuse 8Load amps3.105.2010.4015.6020.80Fuse .97Load .00Fuse SizeBUCKING277 **39823038011B2C2kVA0.861.442.884.335.76Load amps3.806.2612.5318.7925.05Fuse .60Load .00kVA1.302.184.356.528.69Load amps3.405.7211.4017.2022.90Fuse 1.00Load amps6.6010.4021.8032.8043.70Fuse Size418 **504 **38048011D2C2Fuse Size528 2411.00Load amps3.405.7211.4417.1622.88Fuse Size6.0010.0015.0020.0030.00* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).246Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersSelection Tables: Single PhaseTable 3: Using Group 3 (240 x 480 V Primary, 24/48 V Secondary) �dConnectionDiagram *ApplicationDataCatalog 5.024.9637.44BOOSTINGkVA200230 **24027711B1B1Load amps31.241.662.5104.0156.0Fuse .21Load amps31.241.662.5104.0156.0Fuse 2831.241.662.5104.0156.0kVA3463801D1Load ampsFuse SizekVA3623801C1Load ampsFuse SizekVA3784161D1458 50.012.9817.3126.043.2664.9Load amps31.241.662.5104.0156.0Fuse 49.9274.88Load amps31.241.662.5104.0156.0Fuse .76Load amps62.583.3125.0208.0312.0Fuse 2Load amps37.650.175.3125.3187.9BUCKING277 **398418 *504 **528 **23038038048048011111B2C2D2C2D2Fuse Load amps65.487.1130.9217.9326.8Fuse 2Load amps34.345.868.8114.4171.6Fuse 2Load amps65.587.4131.3218.4327.6Fuse 4Load amps34.345.868.8114.4171.6Fuse Size40.060.080.0150.0200.0* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018247
Buck–Boost TransformersSelection Tables: Three PhaseTable 4: Using Group 1 (120 x 240 V Primary, 12/24 V Secondary) �dConnectionDiagram *ApplicationDataCatalog se Load ampsLoad ampsFuse SizekVA2082292F1Load ampsFuse Size208228 **22924032J1E1kVA1.653.34.968.2616.524.833.1Load amps4.168.3212.520.841.662.583.3Fuse 817.32634.6Load amps4.168.3212.520.841.662.583.3Fuse 299.4415.831.547.262.9Load 090.0110.0kVA1.653.314.968.2716.524.833Load 045.060.0Fuse Size4164583M1Fuse 4Load amps4.368.7213.121.843.665.587.2Fuse ad amps4.378.7413.121.843.765.687.4Fuse e 030.040.060.0kVA2292082F2Load ampsFuse Size252 **2402E2kVA264 **41824037823F2M2Load ampsLoad ampsFuse Size* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).248Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersSelection Tables: Three PhaseTable 4: Using Group 1 (120 x 240 V Primary, 12/24 V Secondary) ConnectionDiagram *ApplicationDataCatalog E1F1J1kVA22.5Load amps62.583.3125.0208.3312.5Fuse 5.2Load amps125.0166.6250.0416.6625.0Fuse 23.9Load amps62.583.3125.0208.3312.5Fuse 7.9Load amps125.0166.6250.0416.6625.0Fuse 9.8Load amps125.0166.6250.0416.6625.0Fuse Size175.0250.0350.0600.01000.0472.0kVA228 oad amps125.0166.6250.0416.6625.0Fuse 247.9Load amps62.583.3125.0208.3312.5Fuse 22E2F247.262.794.4157.3236.0Load amps131.0174.0262.0436.6655.0Fuse 3.9Load amps68.891.6137.6229.0344.1Fuse Size80.0110.0175.0300.0400.0kVA252 **264 **418240240378223E2F2M254.672.5109.1181.8272.8Load amps131.3174.3262.5437.4656.3Fuse 2.9Load amps68.891.5137.5228.8343.8Fuse 5.2Load amps68.891.6137.6228.9343.9Fuse Size80.0110.0175.0300.0400.0* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018249
Buck–Boost TransformersSelection Tables: Three PhaseTable 5: Using Group 2 (120 x 240 V Primary, 16/32 V Secondary) ConnectionDiagram *ApplicationDataCatalog 815.638.4411.3Load amps4.697.815.623.431.2Fuse d amps9.3815.631.246.962.5Fuse d amps4.697.815.623.431.2Fuse d amps9.3815.631.246.962.5Fuse Size15.025.045.070.090.03.96.513.019.526.0Load amps9.3815.631.246.962.5Fuse 402E1kVA41641644347133L1M1Load amps9.3815.631.246.962.5Fuse d amps4.697.815.623.431.2Fuse Size10.015.025.035.045.0BUCKING222236256 **272 8.024.0Load amps10.016.633.350.166.7Fuse d amps5.328.8517.726.535.4Fuse d amps10.116.633.350.066.7Fuse d amps5.328.8417.726.535.4Fuse d amps5.338.8717.726.635.5Fuse Size10.010.020.030.040.0* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).250Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersSelection Tables: Three PhaseTable 5: Using Group 2 (120 x 240 V Primary, 16/32 V Secondary) ConnectionDiagram *ApplicationDataCatalog ING18419520820822F1E1kVA16.922.533.856.384.4Load amps46.962.593.8156.0234.0Fuse .9Load ampsFuse 0225.0350.0kVA38.251.176.6127.7191.6Load 0.0kVA71.952.077.9129.9194.0Load 0.071.995.9143.9239.8359.7Load ampsFuse Size416312.0450.070.0Fuse Size443187.5250.0Load ampskVA416125.0175.0Fuse SizeFuse 0.0450.0700.0kVA38.251.076.5127.5191.2Load amps46.962.593.8156.0234.0Fuse 8208240222E2F2E236.048.172.1120.0179.9Load amps100.0133.4200.1333.0499.5Fuse .6Load amps53.270.9106.4177.0265.5Fuse .5Load ampsFuse Size272 0250.0400.0600.0kVA22.129.444.273.5110.2Load amps53.270.8106.3176.8265.2Fuse .1Load amps53.371.1106.6177.3266.0Fuse Size60.080.0125.0200.0300.0* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018251
Buck–Boost TransformersSelection Tables: Three PhaseTable 6: Using Group 3 (240 x 480 V Primary, 24/48 V Secondary) ConnectionDiagram *ApplicationDataCatalog STING1732082G1kVA1.12Load ampsFuse .521319.626.1Load amps6.2410.420.831.241.6Fuse Size10.015.030.045.060.0kVA2.253.757.511.315.0Load 8.6513.017.3kVA4805.631.3Fuse Size4003.753.12Load ampsFuse Size3621.88Load amps3.125.210.415.620.8Fuse Size10.015.020.025.035.0kVA2.594.338.651317.3Load amps3.125.210.415.620.8Fuse Size6.010.015.025.030.0kVA5.28.6617.326.034.6Load amps6.2410.420.831.241.6Fuse Size15.015.030.045.060.0kVA1.352.254.56.759.01Load 4.128.2312.316.5Load 2502082G2Fuse Size4573803K2Fuse SizekVA4994163K2Load ampsFuse Size504 **528 4.96.010.015.020.030.0kVA5.459.0818.227.236.3Load amps6.5610.921.832.843.7Fuse d amps3.435.7211.417.222.96.010.015.020.030.0Fuse Size* For alternate electrical connection diagrams, refer to the section immediately following the selection tables.** Shaded items are 60 Hz only (All other ratings shown are 50/60 Hz).252Visit our website at www.emerson.com or contact Technical Services at (800) 377-4384 with any questions. December 2018
Buck–Boost TransformersSelection Tables: Three PhaseTable 6: Using Group 3 (240 x 480 V Primary, 24/48 V Secondary) ConnectionDiagram *ApplicationDataCatalog 64804804922223322G1G1E1K1K1F1E111.315Load amps31.241.662.5104.0156.0Fuse Load amps31.241.662.5104.0156.0Fuse .6Load amps62.483.212520
Single or three phase line and load must match (a transformer cannot convert single to three phase.) recommend contacting the dimmer manufacturer for advice A common application is to make a single phase on your specific lighting application. connection from a three phase supply by using one phase of the th
