How to calculate the pressure of PVC steel hose machine?

Up to and including 5 kv cross-linked polyethylene insulating power Cable ultra-low Frequency (0.1 HZ) overvoltage withstand Test methods Very – Low – Frequency Wave (0.1 HZ) Voltage Test for described.properties power Cable Rared Up to 35 kv 1 scope this standard stimulates the ultra-low Frequency (0.1 HZ) after the pressure Test as running means of running status of cross-linked polyethylene insulated power Cable Test method. 2 the provisions contained in the following standards shall be referenced by reference to the provisions of this standard. In the publication of this standard, all versions are valid. All standards will be revised and all parties using this standard shall explore the possibility of using the latest version of the following