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Supplier: Block USA, Inc.
Description: Input rated voltage 3 x 690 Vac Output rated voltage 3 x 400 Vac Rated power 650 - 1386 VA Ambient temperature +60° C Protection index IP 00 Autotransformer to: VDE 0570 Part 2-13, DIN EN 61558-2-13, EN 61558
- Maximum Primary Voltage Rating: 690 volts
- Maximum Secondary Voltage Rating: 400 volts
- Operating Frequency Range: 50 to 60 Hz
- Power Rating (VA): 650 VA
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Description: 1000 kVA and meet the requirements of U.S. DOE 10 CFR Part 431 (NEMA TP1) efficiency standards. Non-linear load and harmonic mitigating transformers are designed for electrical systems with high levels of harmonic currents. Acme also offers the C3 POWERWISE energy efficiency transformer,
- Cooling Method: Dry-type / Air Cooled
- Features: NEMA Enclosure
- Maximum Primary Voltage Rating: 480 to 600 volts
- Maximum Secondary Voltage Rating: 380 to 480 volts
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Supplier: Block USA, Inc.
Description: Teil 2-13, DIN EN 61558-2-13, EN 61558-2-13, IEC 61558-2-13 Autotransformer for example for setting the speed of single phase blower motors.
- Maximum Primary Voltage Rating: 400 volts
- Maximum Secondary Voltage Rating: 140 to 310 volts
- Operating Frequency Range: 50 to 60 Hz
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Supplier: Powertronix Inc.
Description: 3-Phase Auto Transformers offer a significant size and weight reduction as well as lower cost. Auto Transformers are for voltage step up or step down when there is no requirement for electrical isolation. APPLICATIONS Automation Marine
- Mounting / Form Factor: Other
- Power Rating (VA): 2000 to 120000 VA
- Standards / Compliance: RoHS Compliant, UL
- Type: Three Phase / Polyphase Transformer
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Description: Acme's single phase transformers are design for use in industrial and commercial application. Transformers rated up to 25 kVA are enclosed within an encapsulated, NEMA 3R enclosures. Standard transformers rated from 37.5 to 250 kVA are enclosed in ventilated, NEMA 2 enclosures
- Cooling Method: Dry-type / Air Cooled
- Features: NEMA Enclosure
- Maximum Primary Voltage Rating: 240 volts
- Maximum Secondary Voltage Rating: 120 to 240 volts
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Supplier: Block USA, Inc.
Description: Rated input voltage 3 x 400 Vac Rated output voltage 3 x 130 - 3 x 240 Vac (5 stages) Rated current 3 x 1.5 - 3 x 15 A Insulation class E Maximum ambient temperature 40 °C Degree of protection IP 00 Autotransformer
- Maximum Primary Voltage Rating: 400 volts
- Maximum Secondary Voltage Rating: 130 to 240 volts
- Operating Frequency Range: 50 to 60 Hz
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Supplier: Selectric, Inc.
Description: NEMA 3R enclosure, splitter block, 3 magnetic contactors, transition timer
- AC Motor Phase: Three Phase Motor
- Device: AC Motor Starter
- Device Technology: Electromechanical
- Manual Starter: Yes
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Supplier: Selectric, Inc.
Description: Terminal block for remote control device (i.e., low pressure switch)
- AC Motor Phase: Three Phase Motor
- Device: AC Motor Starter
- Device Technology: Electromechanical
- Manual Starter: Yes
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Supplier: Selectric, Inc.
Description: Auto transformer, adjustable thermal overload, fused control circuit
- AC Motor Phase: Three Phase Motor
- Device: AC Motor Starter
- Device Technology: Electromechanical
- Manual Starter: Yes
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Supplier: RS Components, Ltd.
Description: From Carroll & Meynell, these 3 phase autotransformers have been designed for use as European supply conversion transformers for 380 V, 400 V and 415 V. These autotransformers can be used to operate machinery on one standard EU voltage from either of the other two
- Core Type: Other
- Maximum Primary Voltage Rating: 380 to 415 volts
- Maximum Secondary Voltage Rating: 380 to 415 volts
- Power Rating (VA): 30000 VA
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Supplier: RS Components, Ltd.
Description: From Carroll & Meynell, these 3 phase autotransformers have been designed for use as European supply conversion transformers for 380 V, 400 V and 415 V. These autotransformers can be used to operate machinery on one standard EU voltage from either of the other two
- Maximum Primary Voltage Rating: 380 to 415 volts
- Maximum Secondary Voltage Rating: 380 to 415 volts
- Mounting / Form Factor: Other
- Operating Frequency Range: 50 Hz
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Supplier: Mirus International, Inc.
Description: A 3-phase, low zero sequence impedance autotransformer, which when connected near to and in parallel with the harmonic generating non-linear loads (usually connected at the distribution panel), provides an alternate path for 3rd, 9th, & 15th current harmonics (triplens)
- Maximum Primary Voltage Rating: 600 volts
- Power Rating (VA): 750000 VA
- Standards / Compliance: CSA, UL, Other
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Supplier: Mirus International, Inc.
Description: A 3-phase, low zero sequence impedance autotransformer, which when connected near to and in parallel with the harmonic generating non-linear loads (usually connected at the distribution panel), provides an alternate path for 3rd, 9th, & 15th current harmonics (triplens)
- Maximum Primary Voltage Rating: 600 volts
- Power Rating (VA): 750000 VA
- Standards / Compliance: CSA, UL, Other
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Supplier: Mirus International, Inc.
Description: A 3-phase, low zero sequence impedance autotransformer, which when connected near to and in parallel with the harmonic generating non-linear loads (usually connected at the distribution panel), provides an alternate path for 3rd, 9th, & 15th current harmonics (triplens)
- Maximum Primary Voltage Rating: 600 volts
- Power Rating (VA): 750000 VA
- Standards / Compliance: CSA, UL, Other
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Supplier: Hubbell Incorporated
Description: DISTRIBUTION, DRY TYPE 19.4 INCH 24.4 INCH 25.5 INCH 50/60 HZ FREQUENCY RATING 3 PHASE(S) UL, CSA APPROVAL INDUSTRIAL, COMMERCIAL APPLICATION NEMA 3R ENCLOSURE 150/120 KVA POWER RATING 600/480 VAC
- Features: NEMA Enclosure
- Maximum Primary Voltage Rating: 480 to 600 volts
- Maximum Secondary Voltage Rating: 380 to 480 volts
- Operating Frequency Range: 50 to 60 Hz
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Supplier: Hubbell Incorporated
Description: DISTRIBUTION, DRY TYPE 19.4 INCH 24.4 INCH 25.5 INCH 50/60 HZ FREQUENCY RATING 3 PHASE(S) UL, CSA APPROVAL INDUSTRIAL, COMMERCIAL APPLICATION NEMA 3R ENCLOSURE 112.5/90 KVA POWER RATING 600/480 VAC
- Features: NEMA Enclosure
- Maximum Primary Voltage Rating: 480 to 600 volts
- Maximum Secondary Voltage Rating: 380 to 480 volts
- Operating Frequency Range: 50 to 60 Hz
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Supplier: Hubbell Incorporated
Description: DISTRIBUTION, DRY TYPE 9.03 INCH 20.3 INCH 18.86 INCH 50/60 HZ FREQUENCY RATING 3 PHASE(S) UL, CSA APPROVAL INDUSTRIAL, COMMERCIAL APPLICATION NEMA 2 ENCLOSURE 75/60 KVA POWER RATING 600/480 VAC
- Features: NEMA Enclosure
- Maximum Primary Voltage Rating: 480 to 600 volts
- Maximum Secondary Voltage Rating: 380 to 480 volts
- Operating Frequency Range: 50 to 60 Hz
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Supplier: Hubbell Incorporated
Description: DISTRIBUTION, DRY TYPE 5.13 INCH 5.5 INCH 11.62 INCH 60 HZ FREQUENCY RATING 1 PHASE(S) UL, CSA APPROVAL INDUSTRIAL, COMMERCIAL APPLICATION NEMA 3R ENCLOSURE 3 KVA POWER RATING 240 VAC PRIMARY VOLTAGE
- Features: NEMA Enclosure
- Maximum Primary Voltage Rating: 240 volts
- Maximum Secondary Voltage Rating: 120 to 240 volts
- Operating Frequency Range: 60 Hz
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Supplier: RS Components, Ltd.
Description: Range of high efficiency low heat loss 3 phase auto transformers Common input and output windings. Easy installation-mountin g holes provided. Screw terminal connections. Reverse operation posible. Transformers tested to EN 61558-2-13. BLOCKIMPEX vacuum impregnation Primary Voltage
- Core Type: Other
- Maximum Primary Voltage Rating: 440 to 460 volts
- Maximum Secondary Voltage Rating: 400 volts
- Mounting / Form Factor: Chassis Mount
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Supplier: RS Components, Ltd.
Description: Range of high efficiency low heat loss 3 phase auto transformers Common input and output windings. Easy installation-mountin g holes provided. Screw terminal connections. Reverse operation posible. Transformers tested to EN 61558-2-13. BLOCKIMPEX vacuum impregnation Primary Voltage
- Core Type: Other
- Maximum Primary Voltage Rating: 220 to 230 volts
- Maximum Secondary Voltage Rating: 400 volts
- Mounting / Form Factor: Chassis Mount
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Supplier: CSA Group
Description: Scope Replacement: This International Standard deals with all aspects of safety such as electrical, thermal and mechanical. This part 2-13 of IEC 61558 applies to stationary or portable, single-phase or polyphase, aircooled (natural or forced), independent or associated
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Description: base rated as follows: 833 kVA and above single-phase, 750 kVA and above three-phase. This standard applies to all liquid-immersed power transformers and autotransformers that do not belong to the following types of apparatus: instrument transformers, step voltage and induction
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Supplier: Siemens Energy Sector
Description: In the power range above 200 MVA, generator and network intertie transformers with off-load or on-load tap changers, or a combination of both, are recommended. Depending on the onsite requirements, they can be designed as multiwinding Power Transformers or autotransformers, in
- Mounting / Form Factor: Pad-Mounted
- Other Transformer Types / Applications: Power Transformer
- Winding Turns: Step-Up Transformer, Step-Down Transformer
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Supplier: Radwell International
Description: AUTOTRANSFORMER, 18-PULSE MITIGATOR, 125HP 3PHASE, 600VAC 60HZ, 1-9 RECTIFIED OUTPUT. FREE 2 YEAR RADWELL WARRANTY
- Transformer Category: Power / Power System / Distribution Transformer
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Supplier: Radwell International
Description: DISCONTINUED BY MANUFACTURER, AUTOTRANSFORMER, 1 PHASE, PRI: 0.78AMP 400-440-460-480-500V , SEC: 1.3AMP 230V. FREE 2 YEAR RADWELL WARRANTY
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Supplier: SMC International
Description: section in a substation. The regulation system is based on a continuously variable autotransformer (Variac) that supplies to a power transformer that delivers the high current outputs and isolate the main supply from the load. A built-in ammeter and a timer gives the information about the
- Form Factor: Stand Alone / Bench
- Phase: Single Phase
- Standards / Compliance: CE Marking
- Test Variable: AC
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Supplier: Solcon Solutions LLC
Description: The RVS-AX provides an optimal solution for small to medium size motors and is an ideal cost effective replacement for Star-Delta and Auto-Transformer type starters. It is easy to install and operate with built-in Current Limit and Motor Protection, integral bypass and 3-phase
- AC Motor Phase: Three Phase Motor
- Continuous Current: 8 to 170 amps
- Device: AC Motor Starter
- Low Voltage Protection: Yes
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Description: IEC 60076-15:2015 applies to three-phase and single-phase gas-filled power transformers (including auto-transformers) with the exception of certain categories of small and special transformers such as: - single-phase transformers with rated power less than 1 kVA and
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and test equipment announces a New 4X4 BUTLER Matrix with broadband frequency coverage from 2.4 to 7.25 GHz. A Butler matrix is a beamforming network used to feed a phased array of antenna elements. Its purpose is to control the direction of a beam, or beams, of radio transmission. KRYTAR’s (read more)
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custom power transformers to meet the requirements of virtually every power application. We offer customers a wide array of transformer products, including: 3-phase transformers Audio transformers Autotransformers Buck-boost transformers (read more)
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Finally fiber optic sensing of power transformer “Hotspots” is paying off
… the early 1980s a successful project was completed by General Electric Co. (GE), Public Service Electric & Gas Co.(PSE&G), and Luxtron Corporation by installing direct winding temperature sensors using Flouroptic® thermometers, in an operational 3 phase autotransformer rated 230kV to 69kV …
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Hybrid UPS Based on Supercapacitor Energy Storage and Adjustable Speed Generator
3 Phase Autotransformer Pn=5kVA CONVI .
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Design, installation, and field experience with a real-time portable transformer monitoring system
An example of this can be seen in Fig. 8 which was generated by exporting monitored data to the same spread sheet file as data from a loading algorithm for a 3001336 MVA, 230kV, 3 phase autotransformer .
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Testing Contaminated Insulators at Project UHV for Voltage Levels of the Future
If lower voltages are required they are available by use of a 40 MVA, 3 phase auto- transformer with a maximum 400 kV output (700 kV 1-1) which also can be used in combination with the regu- lating transformer to provide …
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EHV Application of Autotransformers
If the 3 - phase autotransformer or the bank of three single-phase units does not have a tertiary winding, the zero-sequence im- pedance, ZT;O, will vary in magnitude as shown in Fig. 3.
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Interconnection of Power Sources having Small Frequency Difference
Fig.3 shows a 3 - phase autotransformer connected in delta.
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Standard Handbook for Electrical Engineers, Sixteenth Edition > TRANSFORMERS
It may be a two-winding unit with a delta-connected secondary winding and a Y-connected primary winding which provides the neutral for grounding purposes, or it may be a single-winding 3 - phase autotransformer with windings in interconnected Y or …
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http://vbn.aau.dk/ws/files/14765739/sigrid_bolik.pdf
THE 2-WINDINGS 3 - PHASE AUTOTRANSFORMER .............................................................................................61 4.4 .
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http://www.thescipub.com/pdf/10.3844/ajassp.2005.1305.1308
Figure 3 shows a 3 - phase autotransformer connected .
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Comparison of Voltage Sag Generators for Wind Power System
According to the work principle of transformer and bidirectional switches based VSG mentioned above, an experimental prototype is built with 3 - phase autotransformer , the bidirectional switches are composed of relay, thyristor and IGBT respectively, and experimental comparison is carried out for three …