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    • 1. 发明公开
    • 교란된 라인의 루프 테스트용 방법 및 장치
    • 干扰线环路测试的方法和布置
    • KR1020060012602A
    • 2006-02-08
    • KR1020057021512
    • 2004-04-08
    • 텔레폰악티에볼라겟엘엠에릭슨(펍)
    • 로젠베르그조나스
    • H04B17/00H04M3/30G01R31/08H04B3/46
    • G01R27/04H04B3/46H04M1/24H04M3/305H04M3/306
    • The invention refers to single-ended test of a loop (2, 3). A test device (TD1) is connected to a remote device (3) via a line (2). The remote device is powered on and transmits intermittently handshake signals (HS1), which can disturb the loop test. A receiving and calculating unit (RE1) detects the handshake signals (HS1) and orders a sending unit (SD1) to send a halting signal (NAK-EF) to the remote device. The latter is halted for predetermined silent period of time, during which the test or a part of it is performed. If required the halting of the handshake signals is repeated. The test device sends a broadband loop test signal (S1) and receives a reflected signal (S2) during the silent period. A frequency dependent echo transfer function is generated from the signals (S1, S2) and is used for generating desired properties of the line (2) such as its length (L).
    • 本发明涉及环路的单端测试(2,3)。 测试设备(TD1)经由线路(2)连接到远程设备(3)。 远程设备通电并间歇性发送握手信号(HS1),这可能会干扰环路测试。 接收和计算单元(RE1)检测握手信号(HS1),并命令发送单元(SD1)向远程设备发送停止信号(NAK-EF)。 后者在预定​​的静止时间段停止,在此期间执行测试或其一部分。 如果需要,重复握手信号的停止。 测试设备在静默期间发送宽带环路测试信号(S1)并接收反射信号(S2)。 从信号(S1,S2)产生与频率相关的回波传递函数,并且用于产生线(2)的期望特性,例如其长度(L)。
    • 5. 发明公开
    • 지중케이블 선로 임피던스 측정용 전원 공급 장치
    • 用于测量地下电缆线路阻力的电源单元
    • KR1020040032483A
    • 2004-04-17
    • KR1020020061647
    • 2002-10-10
    • 주식회사 엘에스
    • 하체웅김정년
    • G01R27/26
    • G01R27/04G01R27/16H01F27/34H01F27/385H01F29/02H01F30/02
    • PURPOSE: A power supply unit for measuring impedance of an underground cable line is provided to transform voltages of power sources to the same voltage level by using a transformer control tap to control plural autotransformers, simultaneously. CONSTITUTION: A power supply unit for measuring impedance of an underground cable line includes an input terminal part(2), a plurality of autotransformers(3), a transformer control tap(4), a plurality of 3-harmonics attenuating transformers(5), and an output terminal part(7). The input terminal part(2) includes a plurality of input terminals(1). The autotransformers(3) are connected to the input terminals(1) of the input terminal part(2), respectively. The transformer control tap(4) is connected to the autotransformers(3). The 3-harmonics attenuating transformers(5) are connected to the autotransformers(3), respectively. The output terminal part(7) includes a plurality of output terminals(6) connected to the 3-harmonics attenuating transformers(5), respectively.
    • 目的:提供用于测量地下电缆线路阻抗的电源单元,用于通过使用变压器控制抽头同时控制多个自耦变压器来将电源的电压转换为相同的电压电平。 构成:用于测量地下电缆线的阻抗的电源单元包括输入端子部分(2),多个自耦变压器(3),变压器控制抽头(4),多个3-谐波衰减变压器(5) ,和输出端子部(7)。 输入端子部分(2)包括多个输入端子(1)。 自耦变压器(3)分别连接到输入端子部分(2)的输入端子(1)。 变压器控制抽头(4)连接到自耦变压器(3)。 3谐波衰减变压器(5)分别连接到自耦变压器(3)。 输出端子部分(7)分别包括与3个谐波衰减变压器(5)连接的多个输出端子(6)。
    • 8. 发明授权
    • 지중케이블 선로 임피던스 측정용 전원 공급 장치
    • 在娱乐场所和机场之间
    • KR100442340B1
    • 2004-07-30
    • KR1020020061647
    • 2002-10-10
    • 주식회사 엘에스
    • 하체웅김정년
    • G01R27/26
    • G01R27/04G01R27/16H01F27/34H01F27/385H01F29/02H01F30/02
    • Disclosed is a power supply for measuring the line impedance of an underground cable, which includes an input terminal section having a plurality of input terminals, a plurality of autotransformers, a transformer adjustment tap, a plurality of 3rd-harmonics cancellation transformers, and an output terminal section having a plurality of output terminals. The autotransformers are connected respectively to the input terminals. The transformer adjustment tap is connected to all of the autotransformers. The 3rd-harmonics cancellation transformers are connected respectively to the autotransformers. The output terminals are connected respectively to the 3rd-harmonics cancellation transformers. The autotransformers are simultaneously controlled by the transformer adjustment tap so as to uniformly boost the powers supplied respectively to the autotransformers, and 3rd-harmonics of the powers are cancelled in the 3rd-harmonics cancellation transformers to remove noise, so that the powers are stably applied respectively to the phases of the underground cable.
    • 本发明公开了一种用于测量地下电缆的线路阻抗的电源,其包括具有多个输入端子的输入端子部分,多个自耦变压器,变压器调节分接头,多个三次谐波对消变压器以及输出端 端子部分具有多个输出端子。 自耦变压器分别连接到输入端子。 变压器调节抽头连接到所有自耦变压器。 三次谐波消除变压器分别连接到自耦变压器。 输出端子分别连接到三次谐波对消变压器。 自耦变压器同时由变压器调节抽头控制,以便均匀地提升分别供给自耦变压器的功率,并且在三次谐波消除变压器中消除功率的三次谐波以消除噪声,从而稳定地施加功率 分别针对地下电缆的各相。
    • 10. 发明公开
    • 고주파 측정장치 및 고주파 측정장치의 교정방법
    • 高频测量装置及其校准方法
    • KR1020120033978A
    • 2012-04-09
    • KR1020110094792
    • 2011-09-20
    • 가부시키가이샤 다이헨
    • 타나카료헤이
    • G01R27/08G01R25/04
    • G01R35/005G01R27/04G01R27/28
    • PURPOSE: A high frequency measuring apparatus and a method for correcting the same are provided to correct a voltage value and a current value, which are detected, with high precision. CONSTITUTION: A current transformer(31) detects the current according to the high-frequency current flowing in a transmission line(5) and outputs the detected current to a transforming circuit(32). An effective value calculating circuit(35) produces an effective value of current from current signals inputted from a current converting circuit and outputs the effective value of current to a correcting circuit(38). The correcting circuit corrects the effective value of current, and the effective value of voltage, and the phase difference inputted from a phase difference detecting circuit(37) and the corrected the effective value of current, effective value of voltage, and phase difference to an impedance calculating circuit(39).
    • 目的:提供一种高频测量装置及其校正方法,以高精度校正检测出的电压值和电流值。 构成:电流互感器(31)根据在传输线(5)中流动的高频电流来检测电流,并将检测到的电流输出到变换电路(32)。 有效值计算电路(35)从当前转换电路输入的电流信号产生电流的有效值,并将电流的有效值输出到校正电路(38)。 校正电路校正电流的有效值和电压的有效值以及从相位差检测电路(37)输入的相位差,并将电流的有效值,电压有效值和相位差校正为 阻抗计算电路(39)。