Exporting an existing product
Electrical and electronic products are most efficiently produced for both domestic and international markets when they are
initially designed for global marketplace. However in some cases, this is not possible because:
• A decision to export is made after the product was designed for North American markets and a redesign is not warranted or possible.
• The projected export volume is very small relative to
total production.
• Limited engineering capacity prevents an immediate redesign for international power requirements.
• The product is mature and a redesign for international
markets is not currently justified.
 In these situations, a transformer or voltage changer combined with the appropriate cord, circuit protector, and related
components, may be an attractive alternative to a complete
redesign of
the product’s power section. The transformer can be mounted in a separate enclosure or inside
the product, if the product has space for additional components. The voltage changer is best in
applications where it will be external to the equipment on which it is being used. Because the voltage changer includes a power switch,
a circuit protection device, a voltage selector, and an integral power input connector, it is most appropriate when an immediate solution
is needed.
It is essential to assure in advance that all components in the power section of the load are rated for 50Hz service. This
applies particularly to motors, fans, linear power supplies, and other transformers. The transformers and voltage changer in this section are all rated for both 50 and 60Hz service.
Isolation Transformers (Low Leakage) Back to the top
Interpower transformers are designed to make it easy for equipment manufacturers to adapt their products to work on power mains voltages common in foreign markets. The Interpower transformer family can be used in one of two ways: with North American equipment designed for shipment to 220–240VAC markets or with equipment produced abroad
for 220–240VAC power mains and imported into North American markets.
It is important to verify that all power system components
can operate successfully at both 50 and 60Hz. Foreign power mains are normally 50Hz systems. This is particularly
important with motors, other transformers, and solenoids.
Please note that transformers do not change frequencies.
Interpower transformers are intended for use on equipment in which the transformer can be mounted inside a protective enclosure. Interpower transformers are listed, certified, and approved by UL, CSA, and VDE for use in both information technology and medical applications. All transformers are designed for full rated use at either 50 or 60Hz.
Please note that Interpower Corporation’s transformers are isolation transformers. They provide isolation of primary and secondary circuits and low ground leakage current.
Interpower Voltage Changers Back to the top
The voltage changer is designed to accompany any 115VAC input product anywhere in the world. It is connected to the power mains via any of the world’s cordsets (see the International Cordset Kit, which includes nine different international cordsets). It converts 220–240VAC power to 120VAC but does not change frequency. Therefore, if the input frequency is 50Hz, the output frequency will also be 50Hz. The output is delivered through a standard North American NEMA 5-15R socket.
Interpower voltage
changers make it easy for equipment manufacturers
to adapt their products to work on power mains
voltages common in
foreign markets. Interpower voltage
changers are designed only for use on North American manufactured equipment intended for export. They are designed for service on either 50 or 60Hz circuits.
Generally, when equipment is intended for export, it will be designed right from the beginning to operate on foreign power mains voltages and frequencies. But, some products are intended primarily for domestic markets and are exported in such small quantities, that complete redesign for export is not practical. It is important, though, to verify that all loads used in conjunction with the Interpower voltage changer can
operate successfully at both 50 and 60Hz because
foreign power mains are normally 50 Hz systems. This is
of particular importance with motors, transformers,
and solenoids.
Please note that voltage changers do not change frequencies.
Voltage changers are intended for use with equipment in which an enclosed transformer is desirable. In addition to a transformer, the Interpower voltage changer also includes a power entry module with a power switch, a circuit protection device, and an input voltage selector.
Voltage changers from Interpower Corporation incorporate the isolation transformers described above.
Interpower voltage changers are equipped with an IEC 60320 C14 inlet. Interpower Corporation offers a full range of
cordsets with all of the world’s plugs and IEC 60320 C13
connectors that mate with the IEC 60320 C14 inlet.
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