489-P1-LO-A20 发电机管理继电器
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489- p1 - lo - a20是由GE Multilin制造的Multilin 489发电机管理继电器。该发电机继电器具有1a相CT次级。LO控制电源为20 ~ 60vdc, 20 ~ 48vac, 48hz ~ 62hz。该继电器上的模拟输出为4至20 mA。这个继电器有一个基本的显示。这种发电机管理继电器没有保护适形涂层,以防止化学环境。如果您对这部分有任何疑问,请联系AX Control。
继电器上的跳闸保护功能包括电闭锁模拟输入1至4,热过载,RTDs(定子,轴承,环境,其他),低正向功率,反电机反向功率,无功功率(kvar)用于场损失,距离元件(2个保护区域),励磁损失(2个阻抗圈),中性欠压(三次谐波),中性过压(基频),过频(两步),过频(两步),过频(两步),高定相过流,接地方向、相位差百分比、接地过流、负序过流、带电压抑制的相过流、误通电、启动时脱机过流保护和7个可分配的数字输入。
继电器上的报警保护功能包括irigs - b故障、服务(自检故障)、模拟输入1至4、发电机运行小时、需求(电流MW、Mvar、MVA)、VT熔断器故障、脱扣计数器、热过载、开路RTD、短/低RTD、RTD(定子、轴承、环境、其他)、低正向功率、反向功率、无功功率(kvar)、中性点欠压(三次谐波)、中性点过电压(基频)、过频、过频、每赫兹电压、过压、欠压、接地方向,接地过流,负序,过载,和7个可分配的数字输入(一般输入和转速表)。
489-P1-LO-A20 发电机管理继电器
489-P1-LO-A20 is a Multilin 489 generator management relay that is manufactured by GE Multilin. This generator relay has 1 A phase CT secondaries. The LO control power is 20-60 VDC and 20-48 VAC at 48-62 Hz. The analog outputs on this relay are 4 to 20 mA. This relay has a basic display. This generator management relay does not have a protective conformal coating to protect against chemical environments. If you have any questions about this part, please contact AX Control.
The trip protection features on the relay include electrical lockout analog inputs 1 to 4, thermal overload, RTDs (stator, bearing, ambient, other), low forward power, reverse power for anti-motoring, reactive power (kvar) for loss of field, distance element (2 zones of protection), loss of excitation (2 impedance circles), neutral Undervoltage (3rd harmonic), neutral overvoltage (fundamental), over frequency (two-step), under frequency (two-step), high-set phase overcurrent, ground directional, percentage phase differential, ground overcurrent, negative-sequence overcurrent, phase overcurrent with voltage restraint, inadvertent energization, offline overcurrent protection during startup, and seven assignable digital inputs.
The alarm protection features on the relay include IRIG-B failure, service (self-test failure), analog inputs 1 to 4, generator running hours, demand (current MW, Mvar, MVA), VT fuse failure, trip counter, thermal overload, open RTD, short/low RTD, RTD (stator, bearing, ambient, other), low forward power, reverse power, reactive power (kvar), neutral Undervoltage (3rd harmonic), neutral overvoltage (fundamental), over frequency, under frequency, volts per hertz, overvoltage, Undervoltage, ground directional, ground overcurrent, negative sequence, overload, and 7 assignable digital inputs (general input and tachometer).
489-P1-LO-A20 发电机管理继电器
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