NOVAR 300 Operation & Maintenance Manual NOVAR_CM
Page 3 of 29
1. INTRODUCTION
There is a warning symbol on the equipment, an exclamation mark within a triangle. This
warns the user to refer to the operation and maintenance manual before commissioning,
installing or operating the equipment.
WARNINGS
1. Installation, commissioning and maintenance should only be carried out by suitably
qualified personnel.
2. Terminations exposed during installation, commissioning and maintenance may
present a hazard unless the equipment is electrically isolated.
3. The equipment should only be operated as intended e.g. with the covers in place,
and within the specified electrical and environmental limits.
1.1 APPLICATION
Many power utilities world wide apply financial penalties to industrial consumers of electrical
energy when inductive loads are connected. The established solution for compensating
inductive loads is to apply power factor correction (PFC) by switching capacitors on to the
system. To optimise the operation of PFC, and realise maximum benefits and cost savings,
a means of controlling the capacitor switching is necessary.
NOVAR 300 works by continuously measuring the system's kvar component and then
switching the optimum quantity of capacitor compensation in, or out, to achieve the desired
power factor.
NOVAR 300 uses true rms measuring techniques together with appropriate mathematical
calculations in preference to mean sensing and zero crossing detection which has proved
inaccurate on systems with distorted waveforms.
The NOVAR 300 should be connected to the system as shown in the appropriate diagrams
(Figures 1 and 2).
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