They provide system security and immediate reliable low level ground fault detection on three-phase AC resistance grounded or grounded electrical distribution systems.

此类继电器能够增加系统安全性，并对三相交流接地电阻或接地配电系统进行可靠的低级接地故障检测。

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It is suggested that high resistance grounded method and automation arc blow-out coil parallel resistance grounded method should be used for power distribution system.

建议选择高阻接地方式及自动调谐消弧线圈并联电阻接地方式。

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Thus, the proposed adaptive criterion can effectively improve the sensitivity of generator protection is improved while the single-phase of stator winding is grounded via transition resistance.

因此，自适应判据有效提高了保护在定子绕组经过渡电阻单相接地情况下的灵敏度。

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In New York state, the resistance to fracking is grounded in communities most threatened by it.

CNN: Don't let America get 'fracked'