Glossary
- Alternating current
Current which periodically changes direction in an electrical circuit.[Back]
- Autotransformer
A transformer with primary and secondary windings that have a common part.[Back]
- Current limitor on switching
Limits the high supply currents when switching on a transformer.[Back]
- Diëlectric strength
Corresponds with the difference of phase to which a certain medium can resist without it becoming a conductor (breaking down), eg. 3750 Vac can be connected between the Primary and Secondary side of a transformer without it breaking down. [Back]
- Direct current
Current which only flows in one direction in an electrical circuit.[Back]
- Earthing
A terminal which enables earthing of accessible or non-accessible metall parts of a device. [Back]
- Fuse link
Protection device which trips at a specific current, temperature and time and thus interrupts the circuit.[Back]
- Frequency
Number of oscillations per second of eg. alternating voltage. [Back]
- Isolating transformer
A transformer that has primary and secondary windings electrically isolated bij means of basic insulation, so as to limit, in the circuit fed by the secondary winding, the risks in the event of accidental simultaneous contact with earth and live parts. [Back]
- Junction box
Connection box for round and flat cables.[Back]
- LED
LIGHT EMITTING DIODE is a semi-conductor device that emits a single colour of light when an electrical current is applied.[Back]
- No-load
Functioning of a device without consumer, eg. transformer without lamp.[Back]
- Potentiometer
Controllable resistance. Can be connected in such a way that any part of the available voltage can be divided. Voltage distributor.[Back]
- Power factor
Relation between active and apparent power. For sinusoidal waves the cos Phi corresponds with the difference of phase between current and tension. [Back]
- Primairy
The connection side of an electronic convertor or the winding of transformer to which the supply voltage is connected.[Back]
- Protection class
Classification of protection against electrical shocks. [Back]
- Protection transformer
An isolating transformer that has primary and secondary windings electrically isolated by means of double or reinforced insulation. [Back]
- Rectifier
Device for transforming alternating and direct current.[Back]
- Reversible
Possibility to connect the supply voltage on the secondary winding(s) of a transformer and a consumer on the primary windings.[Back]
- Safety transformer
A protection transformer to supply safety extra-low voltage circuits (safety voltage smaller than or equal to 50Vms).[Back]
- Secondairy
The connection side of an electronic convertor or the winding of a transformer to which the consumer is connected.[Back]
- Temperature class
Indicates the maximum temperature up to which insulation materials and systems keep their specific isolating characteristics.[Back]
- Voltage regulator
Device which stabilises the voltage.[Back]
- Wire-endsleeves
Metal sleeve covering the end of a flexible conductor to facilitate a terminal connection. [Back]
