Measurement:
All models are single phase measurement. APFCR & NEWTON+ needs a CT input from the mains as well as from Capacitor Bank (For VAR mode operation). NANOVAR take only one current input from the mains, since they have only basic PF control option. Voltage input is taken from phase & neutral.

Ease of installation:
These controllers are user friendly and easy to program. There is no need to program C/K or bank sizes manually.

Low current operation:
In VAR mode operation (Available in APFCR and NEWTON+) these controllers can sense as low as of 1% of the main load and take corrective action. PF control option requires minimum 2.5% of mains current for Newton+(Fast) and 6% of mains current for others.

Intelligent Control:
The control parameter is VAR, and not PF. Target PF value is just used to calculate the capacitive VAR required to be added/removed to achieve the desired PF. e.g. If the target PF is unity, means that the target VAR in the system is zero. If system KVAR is 200 lagging, then the controller needs to add 200 KVAR of capacitor banks to reach zero VAR.

The calculation of the reactive power in the system is done by taking instantaneous samples of all voltage and current waveforms, in all four quadrants. These values are then subjected to DSP techniques to add a frequency independent 90° phase shift to current samples. The product of these voltage and current samples then generate signed VAR value.

VAR controller then takes into calculation the prevailing system KVAR, the prevailing bank KVAR and the bank sizes of each stage, and then switches ON/OFF the combination which is closest to the needed VAR.
This assumes a balanced loading of the electrical system. For unbalanced load conditions, Accuvar model is re-commanded.

NANOVAR

Measurement:

NANOVAR takes only one current input from the mains, since they have only basic PF control option. Voltage input is taken from phase & neutral.

Ease of installation:

These controllers are user friendly and easy to program. There is no need to program C/K or bank sizes manually.

Comparison Chart

Technical Specifications

Parameter
Type		Name	Statistics
Input		Supply	One Phase and Neutral of 3P4W system
		Voltage	Direct Voltage Input: Up to 300V L-N Burden: 0.5 VA
		Current	Secondary Current Input: 5A or 1A (To be specified at the time of Ordering) CT Ratio: Site Selectable (In APFCR & NEWTON+ only) Range of Reading: 0-5000A Burden: <1.0VA Overload: 5A CT = 6A RMS Continuous 1A CT = 1.2A RMS Continuous
		Power Supply	Wide operating Voltage SMPS : 80 VAC - 480 VAC, 50-60 Hz
Output		Relay	Switching Voltage: Max. 250 VAC Switching Power: Max. 1000W Expected Mechanical Life: >10 X 106 switching operations Expected Electrical Life: > 4 X 106 switching perations @ (Load = 200VA, Cosp = 0.5)
Optocoupler (Fast Newton+)		VCE(max)-40 VDC; Imax-30 mA
Measurement	True RMS Basic Parameters	Voltage (Volts L-N: VRN, VYN, VBN)	Accuracy: 0.5% of Reading
		Current (Amps IR, IY, IB)	Accuracy: 0.25% of Reading
		Capacitor Current	CT Ration: Site Selectable (In APFCR & NEWTON+ only) Accuracy: 1.0% of Reading
		Power Factor	Accuracy: 1.0% of Reading (IPFI>0.5) Range of Reading: 0.05 to 1.00 Lag/ Lead
Miscellaneous	Dimensions	Bezel	144 X 144 mm (APFCR), 96 X 96 mm (All other three models)
		Panel Cutout	138 X 138 mm (APFCR), 92 X 92 mm (All other three models)
		Depth of installation	55 mm
		Operating temp	10°C to 50° C
		Weight	0.730 Kgs (Approx.) for APFCR, 0.376 Kgs (Approx.) for all other three models
		Min. Operating Current	1% of CT primary in VAR mode, 2.5% in PF mode