Question

What is the typical gas pressures in GIS equipment ?

Short answer

The current is controlled by the PWM converter in the type 4 generator.

Step-by-step solution

Define the gas insulated substation. 

The GIS is defined as gas insulated substation is the substation that operates at high voltage such that all the major components of the substation are placed in a sealed environment. The sealed components are subjected to the SF6 gas that works as the insulation.

Determine explanation for the answer. 

Consider the gas pressure range in the GIS equipment is as follows:

Table 1

Gas mixture nitrogen	Gas mixture SF6	Pressure in MPa
95	5	1.3
90	10	0.94
80	20	0.71
100	0	0.4

Therefore, the data for gas pressure is Table 1