Capacity coefficient compensation


Complex compensating devices.


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Elmark offers complex compensating devices: capacitor batteries for reactive energy – they can be be used both for passive and active compensation; controllers for automatic regulation of the capacity factor (cosφ regulator) and harmonic filters and metal boards for building complex compensating systems.

Browse all products of this category and full technical information here:

What types of capacity compensations are there

To better understand the job that a capacity coefficient compensator does, we first need to understand what types of compensations there are. In terms of their involvement, there are tree general types as they are as follows:

Passive compensation

A passive compensation is when the system has a constant supply of reactive power. In the case where this is true, the system does not react to changes in the harmonic components, nor the size or nature of any such changes. It forgoes a reaction when there is a change in the reactive energy as well.

Most often these systems are individual capacitors which have limited control.

Reactive compensation is when there is an addition or an injection of VAr’s both negative or positive. The goal of this reactive compensation is to attain control of the voltage and to safeguard the system.

It also provides energy loss compensation and is most often applied in the transport and operation of lines and devices on the grid. It is meant to provide voltage stability to those consumers and to also improve the overall voltage.

Active compensation

This is when there is a constant flow of current from the source to the load in an electrical circuit. It differs from reactive in that it does not return the power to the source, but rather only focuses it at the load within the electric circuit.

Active compensation generally has a broader spread and it entails that the system controls the form of the consumed current. Its task it to generate different capacity depending on changes in the load of the system.

What sort of reactive, passive and active components do we provide

We provide single unit capacitor batteries for reactive energy compensation all of which are rated for passive and reactive compensation. These are 3 phase, 3 capacitors with a highly primitive filling based on vegetable resins which are highly conductive and provide a high level of security due to the lack of toxicity.

There is an added safety feature built-in into the capacitor batteries – in case there is a failure caused due to current overload or heat, the cap where the connector is located, will be automatically disconnect to prevent further damage. This is due to a special valve which is installed in that critical location and it is utilized to prevent critical failure of the capacitor.

There are several different products based on the HY11A platform like the HY11A5 which is rated at 450V and has a battery capacity of 5.0 kVArs. There is also the HY111A100 which is also rated at 450V, however has a kVAr of 100.0.

There is also the HY11A25 rated at 690V, with 25.0 kVArs. If you are building a complex capacitor system and you are uncertain what sort of components are best suited for it, then feel free to contact the team and we will be more than happy to assist you.