Gigavolt-Ampere Reactive Hour (GVARh) might sound like a mouthful, but it’s an essential unit in the world of electrical engineering. It measures reactive energy, which is the energy consumed in creating electric and magnetic fields in inductive and capacitive components of an alternating current (AC) system, such as transformers and motors. Unlike active energy, which performs actual work, reactive energy is crucial for maintaining voltage levels necessary for the efficient functioning of an electrical grid.
Reactive power isn’t wasted energy; instead, it balances the active power and allows for stable power delivery. To manage the “invisible” but critical aspect of reactive power, businesses employ power factor correction techniques to optimize energy efficiency. Understanding GVARh can help engineers design better systems and ensure the uninterrupted supply of power across large networks.
The megavolt-ampere reactive hour (MVARh) is an intriguing unit that measures reactive energy, which often goes unnoticed in everyday electrical consumption. Unlike active power measured in kilowatt-hours (kWh), which does real work like lighting a bulb, reactive power is vital for maintaining voltage levels necessary to keep the electrical system stable. It’s the unsung hero ensuring the efficiency and safety of power distribution networks.
Reactive power doesn’t perform tangible tasks, but it is essential for the AC power system’s health. In large-scale operations like factories, an adequate balance of reactive power can lead to significant cost savings by reducing the need for additional transmission capacity. It’s a concept that highlights the unseen complexities behind the convenience of flipping a switch.
Gigavolt-Amperes Reactive Hour | Megavolt-Amperes Reactive Hour |
---|---|
0
GVARh
|
0
MVARh
|
0.1
GVARh
|
100
MVARh
|
0.2
GVARh
|
200
MVARh
|
0.3
GVARh
|
300
MVARh
|
0.4
GVARh
|
400
MVARh
|
0.5
GVARh
|
500
MVARh
|
0.6
GVARh
|
600
MVARh
|
0.7
GVARh
|
700
MVARh
|
0.8
GVARh
|
800
MVARh
|
0.9
GVARh
|
900
MVARh
|
1
GVARh
|
1000
MVARh
|
1.1
GVARh
|
1100
MVARh
|
1.2
GVARh
|
1200
MVARh
|
1.3
GVARh
|
1300
MVARh
|
1.4
GVARh
|
1400
MVARh
|
1.5
GVARh
|
1500
MVARh
|
1.6
GVARh
|
1600
MVARh
|
1.7
GVARh
|
1700
MVARh
|
1.8
GVARh
|
1800
MVARh
|
1.9
GVARh
|
1900
MVARh
|
2
GVARh
|
2000
MVARh
|
2.1
GVARh
|
2100
MVARh
|
2.2
GVARh
|
2200
MVARh
|
2.3
GVARh
|
2300
MVARh
|
2.4
GVARh
|
2400
MVARh
|
2.5
GVARh
|
2500
MVARh
|
2.6
GVARh
|
2600
MVARh
|
2.7
GVARh
|
2700
MVARh
|
2.8
GVARh
|
2800
MVARh
|
2.9
GVARh
|
2900
MVARh
|
3
GVARh
|
3000
MVARh
|
3.1
GVARh
|
3100
MVARh
|
3.2
GVARh
|
3200
MVARh
|
3.3
GVARh
|
3300
MVARh
|
3.4
GVARh
|
3400
MVARh
|
3.5
GVARh
|
3500
MVARh
|
3.6
GVARh
|
3600
MVARh
|
3.7
GVARh
|
3700
MVARh
|
3.8
GVARh
|
3800
MVARh
|
3.9
GVARh
|
3900
MVARh
|
4
GVARh
|
4000
MVARh
|
4.1
GVARh
|
4100
MVARh
|
4.2
GVARh
|
4200
MVARh
|
4.3
GVARh
|
4300
MVARh
|
4.4
GVARh
|
4400
MVARh
|
4.5
GVARh
|
4500
MVARh
|
4.6
GVARh
|
4600
MVARh
|
4.7
GVARh
|
4700
MVARh
|
4.8
GVARh
|
4800
MVARh
|
4.9
GVARh
|
4900
MVARh
|
5
GVARh
|
5000
MVARh
|
5.1
GVARh
|
5100
MVARh
|
5.2
GVARh
|
5200
MVARh
|
5.3
GVARh
|
5300
MVARh
|
5.4
GVARh
|
5400
MVARh
|
5.5
GVARh
|
5500
MVARh
|
5.6
GVARh
|
5600
MVARh
|
5.7
GVARh
|
5700
MVARh
|
5.8
GVARh
|
5800
MVARh
|
5.9
GVARh
|
5900
MVARh
|
6
GVARh
|
6000
MVARh
|
6.1
GVARh
|
6100
MVARh
|
6.2
GVARh
|
6200
MVARh
|
6.3
GVARh
|
6300
MVARh
|
6.4
GVARh
|
6400
MVARh
|
6.5
GVARh
|
6500
MVARh
|
6.6
GVARh
|
6600
MVARh
|
6.7
GVARh
|
6700
MVARh
|
6.8
GVARh
|
6800
MVARh
|
6.9
GVARh
|
6900
MVARh
|
7
GVARh
|
7000
MVARh
|
7.1
GVARh
|
7100
MVARh
|
7.2
GVARh
|
7200
MVARh
|
7.3
GVARh
|
7300
MVARh
|
7.4
GVARh
|
7400
MVARh
|
7.5
GVARh
|
7500
MVARh
|
7.6
GVARh
|
7600
MVARh
|
7.7
GVARh
|
7700
MVARh
|
7.8
GVARh
|
7800
MVARh
|
7.9
GVARh
|
7900
MVARh
|
8
GVARh
|
8000
MVARh
|
8.1
GVARh
|
8100
MVARh
|
8.2
GVARh
|
8200
MVARh
|
8.3
GVARh
|
8300
MVARh
|
8.4
GVARh
|
8400
MVARh
|
8.5
GVARh
|
8500
MVARh
|
8.6
GVARh
|
8600
MVARh
|
8.7
GVARh
|
8700
MVARh
|
8.8
GVARh
|
8800
MVARh
|
8.9
GVARh
|
8900
MVARh
|
9
GVARh
|
9000
MVARh
|
9.1
GVARh
|
9100
MVARh
|
9.2
GVARh
|
9200
MVARh
|
9.3
GVARh
|
9300
MVARh
|
9.4
GVARh
|
9400
MVARh
|
9.5
GVARh
|
9500
MVARh
|
9.6
GVARh
|
9600
MVARh
|
9.7
GVARh
|
9700
MVARh
|
9.8
GVARh
|
9800
MVARh
|
9.9
GVARh
|
9900
MVARh
|
10
GVARh
|
10000
MVARh
|
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