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交流避雷器用监测器工频电流试验方法探讨

Dianci bileiqi
为了提高避雷器用监测器工频电流试验的准确性，研究了采用高压工频电压源并在监测器前端串接多柱并联电阻片作为辅助试验元件以及采用D030-I型三用表校准仪作为低压工频电压源串接kΩ级线性电阻的两种试验方法测量流过监测器的工频电流有效值。试验结果表明两种试验方法准确性高且具有等价性；流过监测器的电流波形畸变是影响试验结果的主要原因。最后指出：整流测量原理的监测器仅可对正常电压下避雷器全电流进行相对准确的测量；当避雷器承受过电压时，整流系监测器全电流测量误差较大；数字化、高精度 ...
余龙龙
doaj  

Influencing factors of early activity in patients with acute ischemic stroke based on social ecological model: A qualitative study. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023
Tang G, Lei J, Zhang Q, Zeng H, Liu Y, Yan P.   +5 more
europepmc   +1 more source

[Emphasis on multidisciplinary collaboration in clinical diagnosis and treatment of autoimmune disease-related ulcers]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2022
Yu JA, Zhao JC.
europepmc   +1 more source

[Multicentric reticulohistiocytosis: A case report]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban, 2021
Zhai L, Qiu N, Song H.
europepmc   +1 more source

[Simultaneous identification and detection of four novel isoxazoline drugs in bovine-origin foods using ultra-high performance liquid chromatography coupled to quadrupole/linear ion trap mass spectrometry]. [PDF]

Se Pu
Yang C, Zhu WX, Liu YF, Wei W, Zhao F, Hu K, Zhao WJ.   +6 more
europepmc   +1 more source

[National expert consensus on the aeromedical trans- portation of burn patients (2022 version)]. [PDF]

Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2022
Chinese Burn Association.
europepmc   +1 more source

[Clinical advances in Ilizarov technique for foot and ankle trauma]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Cai P, Fang X, Li J, Li Y, Zhang H.
europepmc   +1 more source

[Study on bone microstructure and pathology of type L2 and L3 osteonecrosis of the femoral head specimens classified by China-Japan Friendship Hospital classification based on "three-columns structure"]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022
Gao R, Xia X, Liu J, Yuan Z, Huan D, Shen J.   +5 more
europepmc   +1 more source

[The peptide toxin components and nucleotide metabolites in <i>Macrothele raveni</i> venom synergistically inhibit cancer cell proliferation by activating the pro-apoptotic pathways]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Xie T, Wang Y, Guo T, Yuan C.
europepmc   +1 more source

[Screening of effective antioxidant components from Trichosanthes extract and assessment of their antioxidant activity]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao, 2022
Sun M, Zou C, Yan H.
europepmc   +1 more source