PLM Series – Voltage Monitor シリーズ - Littelfuse PLM Voltage Monitoring Relays Provide Superior Protection

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The PLM series is a three-phase voltage monitor that continuously monitors each of the three phases. It monitors both delta and wye systems, and a connection to neutral is not required. The microcontroller circuit design protects against undervoltage, voltage unbalance, phase loss, and phase reversal. Protection is ensured when regenerated voltages are present.

動作

The output relay is energized and the LED glows green when all voltages are acceptable and the phase sequence is correct. Under and unbalanced voltages must be sensed for a continuous trip delay period before the relay de-energizes. Reset is automatic upon correction of the fault condition. The output relay will not energize if a fault condition is sensed as power is applied. The LED flashes red during the trip delay, then glows red when the output de-energizes. The LED flashes green/red if phase reversal is sensed.

Field Adjustment

Set the voltage adjustment knob at the desired operating line voltage for the equipment. This adjustment automatically sets the undervoltage trip point. Apply power. If the PLM fails to energize, (LED glows red) check wiring of all three phases, voltage, and phase sequence. If the phase sequence is incorrect, the LED flashes green/red. To correct this, swap any two line voltage connections at the mounting socket. No further adjustment should be required.

特長:

  • Quick octal 8-pin mounting
  • Proprietary microcontroller-based circuitry
  • LED diagnostics
  • Isolated, 10 A, SPDT output contacts
  • Adjustable, nominal voltage set point
  • Simple 3-wire connection for delta or wye systems
  • ASME A17.1 Rule 210.6
  • NEMA MG1 14:30, 14:35
  • IEEE C62.41-1991 Level B

商品仕様、各種認証情報、在庫のご確認、部品のご注文は以下をご覧ください

Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)Input AC Line Frequency (Hz)Input Phase SequenceInput TypeInput Voltage Maximum (V)Output Load Rating (VA)Output TypePhase LossPower ConsumptionReset Time (ms)StockSamplesCompare
カタログ番号入力
電圧 (V)
出力
フォーム
端子タイプ取付け方式寸法重量 (ポンド / g)Input AC Line Frequency (Hz)Input Phase SequenceInput Type最大入力電圧(V)Output Load Rating (VA)出力タイプPhase LossPower Consumptionリセット時間(ms)在庫サンプル比較する
PLM6405 200 - 240 Vac絶縁 SPDTOctal 8-pin plug-in rated 600 VacPlug-in socket3.2 H x 2.39 W x 1.78 D in. (81.3 x 60.7 x 45.2 mm)0 Kg50 / 100A; B; C3-phase delta or WYE with no connection to neutral27010 A resistive @ 240 Vac 277 Vac max; 1/2 hp @ 240 Vac; 1/4 hp @ 120 VacElectromechanical relay≥35%≤2 WAutomatic確認 Order
PLM6502 200 - 240 Vac絶縁 SPDTOctal 8-pin plug-in rated 600 VacPlug-in socket3.2 H x 2.39 W x 1.78 D in. (81.3 x 60.7 x 45.2 mm)0 Kg50 / 100A; B; C3-phase delta or WYE with no connection to neutral27010 A resistive @ 240 Vac 277 Vac max; 1/2 hp @ 240 Vac; 1/4 hp @ 120 VacElectromechanical relay≥35%≤2 WAutomatic確認 Order
PLM6805 200 - 240 Vac絶縁 SPDTOctal 8-pin plug-in rated 600 VacPlug-in socket3.2 H x 2.39 W x 1.78 D in. (81.3 x 60.7 x 45.2 mm)0 Kg50 / 100A; B; C3-phase delta or WYE with no connection to neutral27010 A resistive @ 240 Vac 277 Vac max; 1/2 hp @ 240 Vac; 1/4 hp @ 120 VacElectromechanical relay≥35%≤2 WAutomatic確認 Order
PLM8405 360 - 430 Vac絶縁 SPDTOctal 8-pin plug-in rated 600 VacPlug-in socket3.2 H x 2.39 W x 1.78 D in. (81.3 x 60.7 x 45.2 mm)0 Kg50 / 100A; B; C3-phase delta or WYE with no connection to neutral48010 A resistive @ 240 Vac 277 Vac max; 1/2 hp @ 240 Vac; 1/4 hp @ 120 VacElectromechanical relay≥35%≤3 WAutomatic確認 Order
PLM9405 400 - 480 Vac絶縁 SPDTOctal 8-pin plug-in rated 600 VacPlug-in socket3.2 H x 2.39 W x 1.78 D in. (81.3 x 60.7 x 45.2 mm)0 Kg50 / 100A; B; C3-phase delta or WYE with no connection to neutral53010 A resistive @ 240 Vac 277 Vac max; 1/2 hp @ 240 Vac; 1/4 hp @ 120 VacElectromechanical relay≥35%≤3 WAutomatic確認 Order
PLM9502 400 - 480 Vac絶縁 SPDTOctal 8-pin plug-in rated 600 VacPlug-in socket3.2 H x 2.39 W x 1.78 D in. (81.3 x 60.7 x 45.2 mm)0 Kg50 / 100A; B; C3-phase delta or WYE with no connection to neutral53010 A resistive @ 240 Vac 277 Vac max; 1/2 hp @ 240 Vac; 1/4 hp @ 120 VacElectromechanical relay≥35%≤3 WAutomatic確認 Order
PLM9805 400 - 480 Vac絶縁 SPDTOctal 8-pin plug-in rated 600 VacPlug-in socket3.2 H x 2.39 W x 1.78 D in. (81.3 x 60.7 x 45.2 mm)0 Kg50 / 100A; B; C3-phase delta or WYE with no connection to neutral53010 A resistive @ 240 Vac 277 Vac max; 1/2 hp @ 240 Vac; 1/4 hp @ 120 VacElectromechanical relay≥35%≤3 WAutomatic確認 Order
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