Non Inherently Short-Circuit Proof - Transformers
means the transformer is equipped with an internal "thermal protection device" to provide overload protection.CSA
IEC
Abbreviation for: Canadian Standards Association.
Intrinsic heating
Heating up which is caused by power losses.
High voltage test
Method of inspection to prove the withstand voltage of an insulation between two windings.
Abbreviation for: "Internationale Electrotechnical Commission".Small transformer, definition.
A small transformer with a power less 16 kVA, a primary voltage until 1000 Volt and a secondary voltage less than 1000 Volt is a so-called small transformer.Conventional transformers
Magnetically shielded winding
These types of transformers are made with laminated cores. The core plates been inserted into a bobbin carrying the windings.
The magnetical shieldings do reduce the other magnetic leakage field.No-load output voltage
Non load power losses
do define the output voltage of the transformer w/o load at rated input voltage and rated frequency.
do define the active power loses at rated input voltage and rated frequency w/ load.Rated Power
Rated ambient temperature
Do define the sum of all output voltages.
do define the max. ambient temperature which shall not be exceeded during normal continuous operation.
Non-short-circuit proof transformer
Specify a transformer w/o internal protective device. Appropriate external protective equipment has to be installed.Primary winding
is designed to be connected to the AC power line.Toroidal transformer
A tape wound insulated steel core where the magnet wire is directly wound on the core by use of special machines.Protection class I
Transformer classified to protection class I provide connection to protective earth neutral (PEN).Protection class II
Static screen
Transformer classified to protection class II provide protection against dangerous currents are double or reinforced insulated and do not provide connection to a protective earth neutral (PEN).
Secondary winding
are windings designed to be connected to the load.
Static shielding
made by a layer of metallic tape (usually made by copper tape) between two windings to reduce transmission of electrostatic interference. The static shielding distinguishes from the magnetic shielding.
Protective Screen
Seperation of dangerous active parts via intercostals metal part which is connected to the outer protective earth neutral (PEN).
The static screen is used to suppress interferences from the AC power line.
Symbols - Directory- Volt[V]Ampere[A]Voltampere[VA]Hertz[Hz]Safety insulation transformer. Non-short-circuit proof.
Safety insulation transformer. Non -inherently -short-circuit proof.
Insulation transformer. Non-short-circuit proof.
Insulation transformer. Non -inherently -short-circuit proof.
Power transformer. Non-short-circuit proof.
Power transformer. Non- inherently-short-circuit proof.
Protective insulation (Protection class II)