As the leading vacuum solution supplier, EVP accumulated a lots experience with different application. For power transformer, we have much successful experience, there are two version vacuum system: Roots pump with piston vacuum pump, Roots pump with rotary vane vacuum pump.
ZJP2H and ZJPH series roots pump with piston vacuum pump system. ZJP2H is roots pump with double stage piston vacuum pump, its ultimate vacuum is 0.02Pa. ZJPH is roots pump with single stage piston vacuum pump, its ultimate vacuum is 0.1Pa (one roots pump), 0.02Pa (two roots pump). Below as the pump system before shipping:（ZJP1200+H-150G）
ZJPSV is another better solution we suggest. It include roots pump and rotary vane vacuum pump. Normally the capacity of SV rotary vane vacuum pump is 300m3/h at 50hz, 630m3/h at 50hz. These system used more widely than ZJP2H and ZJPH in power transformer! Below is photo before sending: (ZJP600+SV630）
Any more query of vacuum system in power transformer, Pls kindly contact with us, thank you!
Key words: power transformer, vacuum system, vacuum package
Edited by: Lany SHEN / Shanghai EVP Vacuum Technology Co., Ltd.