Interrupting no load transformer is the most serious case in vacuum circuit breaker switching overvoltage.
切除空载变压器是真空断路器操作过电压问题最严重的情况。
The sympathetic inrush may occur in the system transformer when no-load electric locomotive or traction transformer is switched, so the protection may be affected.
通过分析发现电力机车空载启动和牵引变空载合闸都会在系统变压器中造成和应涌流。
The principle, main design point and no load voltage ratio calculation method of resin insulation dry-type grounding transformer are introduced.
介绍了树脂绝缘干式接地变压器的工作原理、设计要点及空载电压比的计算方法。
We study the calculating method and program the calculating software to simulate the exciter flow current on the no-load switching-in of transformer.
对涌流瞬态过程进行了分析，研究计算办法并编制了计算软件，可以对变压器空载合闸时的励磁涌流进行计算模拟。
In this paper, the principle of core vibration was described, and a method extracting cores vibration signal without operating transformer at no load condition was introduced.
本文介绍了变压器铁心振动的起因，提出了一种不必空载运行变压器即可取得变压器铁心振动信号基频成分的方法。
In the no-load test of transformer, because of the low power factor and non-sinusoid current waveform, the high precision measurement is difficult.
变压器的空载试验中，由于功率因数低，空载电流不是正弦信号，高精度测量其有功功率具有一定的难度。
In this paper, some simulations of transformer are done when no-load closing under different conditions by using MATLAB. Results of the simulations also proved the priority of this principle.
文章最后借助MATLAB电力工具箱进行了变压器空载合闸和合闸于故障的仿真试验，通过对不同情况的仿真，对原理进行了验证。
Based on the results of no load and load test, the paper studies the analysis and judgment methods of power transformer faults, and gives some field examples.
介绍根据空载试验及负载试验结果分析判断变压器故障的方法，并给出若干实例。
Its main transformer is made of imported cold rolled silicon steel, So its power loss is little with low no-load current.
该系列点焊机，主变压器均为进口冷轨硅钢片，因此，主变压器功耗小，各型空载电流小。
Used for points and load current, closed loop current, no-load transformer and cable charging electric current, close short circuit current.
用于分合负荷电流，闭环电流，空载变压器和电缆充电电流，关合短路电流。
Used for points and load current, closed loop current, no-load transformer and cable charging electric current.
用于分合负荷电流、闭环电流、空载变压器和电缆充电电流。
Since under no-load state the dual stator winding motor was similar with the transformer, use transformer to prove the control system is feasible.
由于在空载情况下，定子双绕组电动机与双绕组变压器的运行情况相似，所以可以用变压器进行验证。
The no-load closing as one of the most common operations to transformer, its transient processes will bring more and more serious influences to power system with the number of operations increases.
空载合闸作为变压器最常见的操作之一，随着操作次数的增多，其暂态过程也将给电力系统带来越来越严重的影响。
It has many remarkable advantages such as simple auxiliary circuit, realizing ZVS in the wide load range, no voltage spike and surge of the transformer secondary side and easy to be controlled.
与基本ZVS三电平变换器相比，该变换器具有辅助网络简单、实现零电压范围宽、副边无电压过冲和占空比丢失以及控制方式灵活等优点。
Two practical methods are introduced to renovate the power transformer with no-load tap changer into that with on-load one.
配置有载调压的变压器在有载调压开关出现异常时，为抑制恶化趋势，避免突发故障，采取了减少调压开关动作次数的措施。
Two practical methods are introduced to renovate the power transformer with no-load tap changer into that with on-load one.
配置有载调压的变压器在有载调压开关出现异常时，为抑制恶化趋势，避免突发故障，采取了减少调压开关动作次数的措施。
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