Three Phase Mobile Transformer
Categories: Engineering Lab EquipmentDescriptionThe Three-phase Mobile Transformer is an essential tool for experiments and demonstrations of transformer theory. It consists of three identical transformers on a common core to create a th...
Product
Description
Description
The Three-phase Mobile Transformer is an essential tool for experiments and demonstrations of transformer theory. It consists of three identical transformers on a common core to create a three-limb, three-phase transformer. The transformer is inside a steel enclosure, which has small wheels for ease of mobility. The transformer has a selection of high-voltage (primary) and low-voltage (secondary) tappings to select a range of input and output voltages. All tappings are accessible, so students may link the windings to suit any of the common three-phase connections. All tappings connect to coloured, shrouded sockets for safety. To show transformer principles clearly, the transformers operate as one volt each turn. This means that the noload output voltage is the same as the number of turns on the secondary. For a typical test, students connect the primary and secondary winding to suit their experiments. They then connect a suitable variable supply to the primary windings and measure the output voltages, with or without loads – determined by the experiment. Thermocouples help to measure temperatures on the primary windings, the secondary windings and the core of one of the phases. The readings help the student to understand the temperature specification for materials used in transformers. Note: you need a suitable K-type measuring instrument (not supplied) to measure the outputs of the thermocouples. To allow a complete range of tests, we supply this product with three load banks; one resistive, one capacitive and one inductive
Learning Outcomes
Single-phase and three-phase experiments
Open and short-circuit tests to find iron and copper losses
Harmonics and unbalanced loading
Star-star, star-delta, delta-delta and delta-star connected transformers
Interconnected star (interstar or zig-zag) connection
Features
For use in single-phase or any three-phase configuration, including star, delta, interstar and others
Mobile, for easy use
One-volt-per-turn winding design for easy demonstration of transformer principles
Supplied with a set of load banks for a complete range of tests
Includes thermocouples for core and winding temperature measurements
Multiple tappings for selection of input and output voltages
Specifications
ATICO is committed to a programme of continuous improvement; hence we reserve the right to alter the design and product specification without prior notice.
Nett dimensions and weight:
340 mm wide x 900 mm long x 500 mm high and 100 kg
Approximate packed weight and volume:
200 kg and 0.3 m3
Nett and packed dimensions of Load banks :
Refer to separate datasheets.
Transformers:
• 3 kVA nominal (1 kVA each phase)
• Three-limb three-phase double-wound transformer
• Each primary has two sections, one with tappings at 18 V and 138 V. The other is mirrored at 120 V and 138 V.
• Each secondary has two sections, one with tappings at 40 V, 48 V, 50 V, 52 V, 60 V, and 69 V. The other is mirrored at 9 V, 17 V, 19 V, 21 V, 29 V and 69 V.
Thermocouples:
Three K-type thermocouples, each fitted to the primary, secondary and core of phase B transformer. Each thermocouple connects to K-type sockets on the connection plate of the transformer.
Operating Conditions
Operating Environment:
Laboratory
Storage Temprature Range :
–25°C to +55°C (when packed for transport)
Operating Temprature range:
+5°C to +40°C
Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at 40°C
quick overview :
Description
The Three-phase Mobile Transformer is an essential tool for experiments and demonstrations of transformer theory. It consists of three identical transformers on a common core to create a three-limb, three-phase transformer. The transformer is inside a steel enclosure, which has small wheels for ease of mobility. The transformer has a selection of high-voltage (primary) and low-voltage (secondary) tappings to select a range of input and output voltages. All tappings are accessible, so students may link the windings to suit any of the common three-phase connections. All tappings connect to coloured, shrouded sockets for safety. To show transformer principles clearly, the transformers operate as one volt each turn. This means that the noload output voltage is the same as the number of turns on the secondary. For a typical test, students connect the primary and secondary winding to suit their experiments. They then connect a suitable variable supply to the primary windings and measure the output voltages, with or without loads – determined by the experiment. Thermocouples help to measure temperatures on the primary windings, the secondary windings and the core of one of the phases. The readings help the student to understand the temperature specification for materials used in transformers. Note: you need a suitable K-type measuring instrument (not supplied) to measure the outputs of the thermocouples. To allow a complete range of tests, we supply this product with three load banks; one resistive, one capacitive and one inductive
Learning Outcomes
Single-phase and three-phase experiments
Open and short-circuit tests to find iron and copper losses
Harmonics and unbalanced loading
Star-star, star-delta, delta-delta and delta-star connected transformers
Interconnected star (interstar or zig-zag) connection
Features
For use in single-phase or any three-phase configuration, including star, delta, interstar and others
Mobile, for easy use
One-volt-per-turn winding design for easy demonstration of transformer principles
Supplied with a set of load banks for a complete range of tests
Includes thermocouples for core and winding temperature measurements
Multiple tappings for selection of input and output voltages
Specifications
ATICO is committed to a programme of continuous improvement; hence we reserve the right to alter the design and product specification without prior notice.
Nett dimensions and weight:
340 mm wide x 900 mm long x 500 mm high and 100 kg
Approximate packed weight and volume:
200 kg and 0.3 m3
Nett and packed dimensions of Load banks :
Refer to separate datasheets.
Transformers:
• 3 kVA nominal (1 kVA each phase)
• Three-limb three-phase double-wound transformer
• Each primary has two sections, one with tappings at 18 V and 138 V. The other is mirrored at 120 V and 138 V.
• Each secondary has two sections, one with tappings at 40 V, 48 V, 50 V, 52 V, 60 V, and 69 V. The other is mirrored at 9 V, 17 V, 19 V, 21 V, 29 V and 69 V.
Thermocouples:
Three K-type thermocouples, each fitted to the primary, secondary and core of phase B transformer. Each thermocouple connects to K-type sockets on the connection plate of the transformer.
Operating Conditions
Operating Environment:
Laboratory
Storage Temprature Range :
–25°C to +55°C (when packed for transport)
Operating Temprature range:
+5°C to +40°C
Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at 40°C
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