HLM Series – Voltage Monitor 系列 - Littelfuse HLM Voltage Monitoring Relays Provide Superior Protection

系列: HLM Series – Voltage Monitor
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The HLM (HLMU) series is a universal voltage, encapsulated, three-phase voltage monitor. This monitor continuously measures the voltage of each of the three phases with microcontroller accuracy and compares the value to preset trip points. It separately senses phase reversal and loss; over, under and unbalanced voltages; and over or under frequency. Protection is ensured during periods of large average voltage fluctuations or when regenerated voltages are present. The unit trips within 200 ms when phase loss is detected. Adjustable time delays are included to prevent nuisance tripping and short cycling of sensitive equipment. The isolated, 10 A, DPDT relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage unbalance, and time delays are knob adjustable. The phase loss setpoint and the acceptable frequency range are fixed. Both delta and wye systems can be monitored - no connection to neutral is required.
See datasheet for operation details.

功能与特色

  • Proprietary microcontroller-based circuitry
  • Universal line voltage range
  • DIN-rail (35mm) or surface mounting
  • LED指示
  • Encapsulated
  • Finger-safe terminal blocks

产品文献

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Catalog #Input
Voltage (V)		Output
Form		Termination TypeMounting MethodDimensionsWeight (lbs/g)HumidityInput AC Line Frequency (Hz)Input Phase SequenceInput TypeInput Voltage Maximum (V)Output Load Rating (VA)Output TypeOver/Under Frequency (%)Overvoltage Reset Voltage (%)StockSamplesCompare
产品号输入
电压（V）		输出
型式		端接类型安装方法尺寸规格重量（磅/克）湿度Input AC Line Frequency (Hz)Input Phase SequenceInput Type最大输入电压 (V)Output Load Rating (VA)输出类型Over/Under Frequency (%)Overvoltage Reset Voltage (%)库存样品比较
HLMUDLAAA 200 - 240 Vac; 340 - 420 Vac; 400 - 480 VacDPDTScrew terminal connection for up to #12 AWG (3.3 mm²) wire表面安装式，带一个#10 (M5 x 0.7)螺丝3 H x 2 W x 1.64 D in. (76.7 x 50.8 x 41.7 mm)0公斤95% non-condensing50 / 60 automatically detected; 240 V ac: 50 / 60; 380 V ac: 50; 480 V ac: 60A; B; C; L1; L2; L33-phase delta or WYE with no connection to neutral55010 A resistive @ 240 Vac; 8 A resistive @ 277 Vac; NO-1/4 hp @ 120 Vac; 1/3 hp @ 240 VacIsolated electromechanical relay±4%; Reset ±3%; 50 / 60 Hz≅-3% of the trip voltage查看 Order
HLMUDN0405N 200 - 240 Vac; 340 - 420 Vac; 400 - 480 VacDPDTScrew terminal connection for up to #12 AWG (3.3 mm²) wire表面安装式，带一个#10 (M5 x 0.7)螺丝3 H x 2 W x 1.64 D in. (76.7 x 50.8 x 41.7 mm)0公斤95% non-condensing50 / 60 automatically detected; 240 V ac: 50 / 60; 380 V ac: 50; 480 V ac: 60A; B; C; L1; L2; L33-phase delta or WYE with no connection to neutral55010 A resistive @ 240 Vac; 8 A resistive @ 277 Vac; NO-1/4 hp @ 120 Vac; 1/3 hp @ 240 VacIsolated electromechanical relay±4%; Reset ±3%; 50 / 60 Hz≅-3% of the trip voltage查看 Order
HLMUDNAAN 200 - 240 Vac; 340 - 420 Vac; 400 - 480 VacDPDTScrew terminal connection for up to #12 AWG (3.3 mm²) wire表面安装式，带一个#10 (M5 x 0.7)螺丝3 H x 2 W x 1.64 D in. (76.7 x 50.8 x 41.7 mm)0公斤95% non-condensing50 / 60 automatically detected; 240 V ac: 50 / 60; 380 V ac: 50; 480 V ac: 60A; B; C; L1; L2; L33-phase delta or WYE with no connection to neutral55010 A resistive @ 240 Vac; 8 A resistive @ 277 Vac; NO-1/4 hp @ 120 Vac; 1/3 hp @ 240 VacIsolated electromechanical relay±4%; Reset ±3%; 50 / 60 Hz≅-3% of the trip voltage查看 Order
HLMUDRAAA 200 - 240 Vac; 340 - 420 Vac; 400 - 480 VacDPDTScrew terminal connection for up to #12 AWG (3.3 mm²) wire表面安装式，带一个#10 (M5 x 0.7)螺丝3 H x 2 W x 1.64 D in. (76.7 x 50.8 x 41.7 mm)0公斤95% non-condensing50 / 60 automatically detected; 240 V ac: 50 / 60; 380 V ac: 50; 480 V ac: 60A; B; C; L1; L2; L33-phase delta or WYE with no connection to neutral55010 A resistive @ 240 Vac; 8 A resistive @ 277 Vac; NO-1/4 hp @ 120 Vac; 1/3 hp @ 240 VacIsolated electromechanical relay±4%; Reset ±3%; 50 / 60 Hz≅-3% of the trip voltage查看 Order
产品编号 零件描述 RoHS 无铅 RoHS (2015/ 863/EU)认证 REACH（SVHC's）声明 无卤素 REACH（SVHC's） IPC-材料声明
HLMUDRAAA 3 PHASE VOLTAGE MONITOR RoHS 否 03/08/2021 PbFree 否 03/08/2021 CoC_RoHS9_HLMUDRAAA Yes
03/08/2021
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