The basis of the program is the cable calculation. The user enters a value for the motorshaft power or the current generated by the
load at the cable end. With a motor at the cable end, the program takes the standard Nema motor values and calculates the appropriate current and, with this, the minimum cable cross-section.

The calculation is done via metric or AWG tables, which determine via the ampacity the possible thermic load, and it also calculates voltage loss and short-circuit length. This length is calculated in relation to the selected safety device and also to the selected (10 kV) transformer as well as the calculated capacitor battery. Furthermore, the length depends on whether or not the cable is armoured.
As the basic input for the calculation, the user enters the motor shaft power (in kW) or the initial current (A).
Kabelberekening If the power value is chosen, the program selects a standard motor, calculates its efficiency, and considers the starting current
depending the method of starting. The user can choose between a direct online motor, a star-delta starter, a softstarter, or frequency converter.

The short-circuit current is calculated and presented graphically on a separate form.
The required cable, resulting from the calculation, is given in mm2,AWG, BSW, kcmils.

Kabel++ calculates what other cable calculations don’t:

-  the nominal and starting currents of the motor
   (for instance, the voltage drop due to the starting current must not exceed 15%, and may not shut off the safety release).

-  the influence of the type of circuitry scheme, (for instance, a frequency converter gives a higher ampacity load, a better safety release,    and a different power factor than a direct online one).

-  the short-circuit current that precisely depends on the safety release, the attenution of a feeding cabinet cable or transformer, thus    safeguarding the cable as it should.

Cables in parallel
If one cable is too small because of the load carried, the voltage loss, or the short-circuit current or starting current, then the program selects the minimum number of cables that are needed in parallel. It also signals whether or not the voltage drop at the busbar
system – due to a short-circuit at the cable end - is too great in relation to the chosen or calculated transformer.

Help texts
By means of the help texts on the fly (extended hints), the user is guided to the best suitable cable in terms of price and load.

50/60 Hz
The motor kW-ranges vary with the chosen frequency. Furthermore, the impedance of the cable (L and C) is calculated with the
relevant frequency.

AWG versus metric [mm2]
The program has a conversion for metric cable size to AWG cable codes. The different cross-section size in the mm2 is correctly computed (ampacity, voltage loss) in the calculations, and the corresponding AWG size is presented. Also incorporated are the British Imperial Standard S.W.G. And the American Brown & Sharpe B&S.

Several fuses and safetydevices are integrated in the package
-  For safety's it follows several characteristics according to norms and some factoryspecific devices.
-  For the circuitbreakers the normcharacteristics such as B, C, D and the K characteristics are present.

Also there are some special devices such as
-  the Pro-tec for guarding cable for lighting along public roads,
-  further differentialsafety's for guarding generators are foreseen,
-  for f.i. transfomatoren the inverse time characteristics according BS 142.1966 and IEC 60255-3 are present,
-  and for motors the NEMA thermic time characteristics are present.

Several types of cable are taken in the program, mainly build upon copper and aluminium for the cores, and for the isolation XLPE,
PVC and rubber. Normalized codes build upon these materials are about: HO7, HO5, HD604, N2XH-O/J, N2X, NY, and rubbertypes as HO&RN, HO7BQ, NSSHOU, and MPRX for on board of ships.
Of course also middle voltage cables are in the program.

Light version
There is also a light version which is only available in Dutch at this moment. However, this version lacks most options. In this presentation, the Dutch light version is not further covered.

Short circuit
The short-circuit current is right after the short circuit moment, asymmetrical and large. Via the subtransiente current, the current reduces to the static short circuit current value. In addition, does it matter whether the short circuit exists between the phases, between phase and earth or neutral and whether or not it concerns a smaller earth or neutral conductor than the phase conductor. Also, account should be taken of the retrospective effect of running machines whereby the short-circuit current increases.

Solarpanels and Windmills
Wenn applying solarcells or a windmill you use the advanced version.
The software handles the problem that a solarpanel hardly hasn't any shortcircuitpower.

Solar panels
Solarpanel, PV-installations A solarpanel including a convertor, cannot deliver a shortcircuitcurrent. In Kabel++ you may choose for PV setups so the programm doesn't reckon with the shortcircuitlength. Also it then calculates the designcurrent from the enterd panelpower and efficiency. In the cabledatabase a sufficient solarcable is hold (halogen and leadfree, and suitable for ozon and UV).