Millivolt-Ampere Reactive (mVAR) is a lesser-known unit often used in electrical engineering to measure reactive power in smaller-scale applications. Unlike active power, which does the actual work, reactive power is essential for maintaining voltage stability and transferring energy in AC circuits. Reactive power exists due to the phase difference between current and voltage in inductive or capacitive loads, causing energy to oscillate between source and load rather than being consumed.
The “milli” prefix denotes one-thousandth, making 1 mVAR equal to 0.001 VARs. Understanding and managing reactive power at this scale is crucial in sensitive electronics or communication systems, where even minor fluctuations can affect performance. It highlights the delicate balance within power systems that engineers must maintain for efficiency and reliability.
Kilovolt-Ampere Reactive (kVAR) is a unit that measures reactive power in an electrical system, which is essential for maintaining voltage levels necessary for the safe and efficient operation of electrical equipment. Unlike active power, which performs useful work, reactive power oscillates between the source and load, helping to sustain the magnetic and electric fields that spin motors and flow electricity.
Understanding kVAR is crucial in industries reliant on large motors and transformers, as it helps in optimizing power factor and reducing unnecessary power wastage. Managing kVAR can also lead to significant cost savings by minimizing energy losses and improving overall electrical system efficiency. This unit plays a vital role in ensuring that electrical systems are not only effective but also economically viable.
Millivolt-Amperes Reactive | Kilovolt-Amperes Reactive |
---|---|
0
mVAR
|
0
kVAR
|
10000
mVAR
|
0.01
kVAR
|
20000
mVAR
|
0.02
kVAR
|
30000
mVAR
|
0.03
kVAR
|
40000
mVAR
|
0.04
kVAR
|
50000
mVAR
|
0.05
kVAR
|
60000
mVAR
|
0.06
kVAR
|
70000
mVAR
|
0.07
kVAR
|
80000
mVAR
|
0.08
kVAR
|
90000
mVAR
|
0.09
kVAR
|
100000
mVAR
|
0.1
kVAR
|
110000
mVAR
|
0.11
kVAR
|
120000
mVAR
|
0.12
kVAR
|
130000
mVAR
|
0.13
kVAR
|
140000
mVAR
|
0.14
kVAR
|
150000
mVAR
|
0.15
kVAR
|
160000
mVAR
|
0.16
kVAR
|
170000
mVAR
|
0.17
kVAR
|
180000
mVAR
|
0.18
kVAR
|
190000
mVAR
|
0.19
kVAR
|
200000
mVAR
|
0.2
kVAR
|
210000
mVAR
|
0.21
kVAR
|
220000
mVAR
|
0.22
kVAR
|
230000
mVAR
|
0.23
kVAR
|
240000
mVAR
|
0.24
kVAR
|
250000
mVAR
|
0.25
kVAR
|
260000
mVAR
|
0.26
kVAR
|
270000
mVAR
|
0.27
kVAR
|
280000
mVAR
|
0.28
kVAR
|
290000
mVAR
|
0.29
kVAR
|
300000
mVAR
|
0.3
kVAR
|
310000
mVAR
|
0.31
kVAR
|
320000
mVAR
|
0.32
kVAR
|
330000
mVAR
|
0.33
kVAR
|
340000
mVAR
|
0.34
kVAR
|
350000
mVAR
|
0.35
kVAR
|
360000
mVAR
|
0.36
kVAR
|
370000
mVAR
|
0.37
kVAR
|
380000
mVAR
|
0.38
kVAR
|
390000
mVAR
|
0.39
kVAR
|
400000
mVAR
|
0.4
kVAR
|
410000
mVAR
|
0.41
kVAR
|
420000
mVAR
|
0.42
kVAR
|
430000
mVAR
|
0.43
kVAR
|
440000
mVAR
|
0.44
kVAR
|
450000
mVAR
|
0.45
kVAR
|
460000
mVAR
|
0.46
kVAR
|
470000
mVAR
|
0.47
kVAR
|
480000
mVAR
|
0.48
kVAR
|
490000
mVAR
|
0.49
kVAR
|
500000
mVAR
|
0.5
kVAR
|
510000
mVAR
|
0.51
kVAR
|
520000
mVAR
|
0.52
kVAR
|
530000
mVAR
|
0.53
kVAR
|
540000
mVAR
|
0.54
kVAR
|
550000
mVAR
|
0.55
kVAR
|
560000
mVAR
|
0.56
kVAR
|
570000
mVAR
|
0.57
kVAR
|
580000
mVAR
|
0.58
kVAR
|
590000
mVAR
|
0.59
kVAR
|
600000
mVAR
|
0.6
kVAR
|
610000
mVAR
|
0.61
kVAR
|
620000
mVAR
|
0.62
kVAR
|
630000
mVAR
|
0.63
kVAR
|
640000
mVAR
|
0.64
kVAR
|
650000
mVAR
|
0.65
kVAR
|
660000
mVAR
|
0.66
kVAR
|
670000
mVAR
|
0.67
kVAR
|
680000
mVAR
|
0.68
kVAR
|
690000
mVAR
|
0.69
kVAR
|
700000
mVAR
|
0.7
kVAR
|
710000
mVAR
|
0.71
kVAR
|
720000
mVAR
|
0.72
kVAR
|
730000
mVAR
|
0.73
kVAR
|
740000
mVAR
|
0.74
kVAR
|
750000
mVAR
|
0.75
kVAR
|
760000
mVAR
|
0.76
kVAR
|
770000
mVAR
|
0.77
kVAR
|
780000
mVAR
|
0.78
kVAR
|
790000
mVAR
|
0.79
kVAR
|
800000
mVAR
|
0.8
kVAR
|
810000
mVAR
|
0.81
kVAR
|
820000
mVAR
|
0.82
kVAR
|
830000
mVAR
|
0.83
kVAR
|
840000
mVAR
|
0.84
kVAR
|
850000
mVAR
|
0.85
kVAR
|
860000
mVAR
|
0.86
kVAR
|
870000
mVAR
|
0.87
kVAR
|
880000
mVAR
|
0.88
kVAR
|
890000
mVAR
|
0.89
kVAR
|
900000
mVAR
|
0.9
kVAR
|
910000
mVAR
|
0.91
kVAR
|
920000
mVAR
|
0.92
kVAR
|
930000
mVAR
|
0.93
kVAR
|
940000
mVAR
|
0.94
kVAR
|
950000
mVAR
|
0.95
kVAR
|
960000
mVAR
|
0.96
kVAR
|
970000
mVAR
|
0.97
kVAR
|
980000
mVAR
|
0.98
kVAR
|
990000
mVAR
|
0.99
kVAR
|
1000000
mVAR
|
1
kVAR
|
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