LEM Products

Sentinel 3+ Battery Sensor Gen 3+, DIN Rail Mount Compact and versatile 3 in 1 Battery sensor for monitoring of critical battery systems, included Flooded Cell, and VLRA types. The Sentinel 3+ is a state of the art, System on Chip (SoC) digital transducer designed to monitor VRLA, gel or flooded stationary battery systems. Data is transmitted over a dedicated communication bus to proprietary and non-proprietary devices Features Din Rail Mount, Compact Design LED status indicator Temperature patch for direct battery measurement Communication interface isolation 2.16 kV Fast, simple fittings , Voltage, Temperature and True AC Impedance Measurement S-Bus Output (Interface with OEM equipment) Suitable for Transformerless UPS systems (may require Common mode Isolator) Isolated plastic case recognised according to UL94-V0 Advantages Excellent sensitivity, accuracy, and repeatability High current stimulation for secure impedance measurement Improved immunity to Common Mode transients in newer UPS topologies (ie. transformerless, using fast IGBTs and/or a floating battery with respect to earth ground). Applications UPS Telecommunications Battery supplied applications Application Domains Energy & Automation Industrial. Utilities Fire & Safety system Remote monitoring LEM Part Number BM Sentinel 3+ Technology SoC 3 in 1 sensor CE Approved Yes Supply Voltage 0.9 .. 16VDC @ 30mA Voltage Measurement Range 0.9 .. 16VDC @ 30mA Temperature Measurement Range -10°C / 70°C Output S-Bus Digital protocol Isolation 2.16kV (AC, 50Hz, 1 min) S-Bus Baud Rate 9600 bps Mounting Style Din Rail Mount Operating Temperature Range -10°C / 70°C Accuracy 0.5% Termination Style 6 Pin Connector (for BM CBL POW 0.4/0.6M) Unit Weight 70g Factory Pack Qty 6   Datasheet Used to monitor and measure battery Impedance, Voltage, and Surface Temperature. Product Datasheet S-Bus Protocol Information OEM Software Tools Sentinel 3 Commander Test Program Sentinel Troubleshooting Harsh EMC Application Notes In a UPS, the current drawn by the inverter contains line frequency harmonic components (mostly 2nd, 4th and 6th). Part of this ripple current flows through the battery, to which is connected the Sentinel. As the Sentinel itself uses an excitation current for the impedance measurement, so the presence of ripple current can interfere with the measurement and thus cause errors. The table below quantifies the additional error resulting from 1A rms of ripple current, for different combinations of ripple current harmonics and bloc voltage. Table 1: Additional errors for impedance measurement due to ripple current (See datasheet) Notes: The error values are the maximum, and are normalized for 1A rms of ripple current. The error is proportional to the ripple current; for example, if the ripple current was 2A rms the error will increase by factor 2.

Read more less

LEM RS232 SBUS Converter for LEM Battery Monitoring System Features Proprietary LEM SBUS String Interface For OEM Sentinel Communication Datasheet Product Datasheet

Read more less

5.0M Battery Monitoring Data Cable Delivery up to 8-10 weeks if not in stock

Read more less

2.0M Battery Monitoring Data Cable Delivery up to 8-10 weeks if not in stock

Read more less

1.0M Battery Monitoring Data Cable Delivery up to 8-10 weeks if not in stock

Read more less

0.4M Battery Monitoring S-Bus Serial Comminication cable

Read more less

LEM AT 50 B420L, AC Current Transformer, loop powered, 50 Amp Average RMS 4-20mA output, Features Average RMS Output Split Core 4-20mA Current Output Cable Mounting 20-30VDC Loop Powered Isolated plastic case recognised according to UL94-V0 Advantages Large aperture for cable up to ? 16mm High isolation between primary and secondary circuits Easy installation Applications Current Measurement Energy Management Motor Control Actuators Lamp Failure Specification LEM Part Number AT 50 B420L Technology AC Current Transformer Protection Class IP50 Supply Voltage 20-30VDC Loop Powered (10mA) Load Current (RMS) 50 Amp Output 4-20mA (Average RMS) Isolation 3.5kV (AC, 50Hz, 1 min) Bandwidth 55 - 65Hz Mounting Style Din Rail Mount Operating Temperature Range -10°C / 65°C Accuracy 1.5% Termination Style Screw Unit Weight 90g Factory Pack Qty 6 Datasheet Product Datasheet

Read more less

LEM AT 5 B5, Split Core AC Current Transformer, Self Powered, 5 Amp Avg RMS 0-5V outputFeatures Split Core 0-5V Average RMS Output Cable Mounting Self Powered Isolated plastic case recognised according to UL94-V0 Advantages Large aperture for cable up to ? 16mm High isolation between primary and secondary circuits Easy installation Applications Current Measurement Energy Management Motor Control Actuators Lamp Failure Specification LEM Part Number AT 5 B5 Technology AC Current Transformer Protection Class IP50 Supply Voltage Self Powered Load Current (RMS) 5 Amp Maximum Measurement Current (RMS) 6 Amp Output 0-5V (Average RMS) Isolation 3.5kV (AC, 50Hz, 1 min) Bandwidth 55 - 65Hz Mounting Style Din Rail Mount Operating Temperature Range -10°C / 65°C Accuracy 1.5% Aperture ? 16mm Termination Style Screw Approvals CE,UL,ROHS Unit Weight 90g Factory Pack Qty 6 Datasheet Product Datasheet

Read more less

LEM AT 150 B420L, AC Current Transformer, loop powered, 150 Amp, Average RMS, 4-20mA output Features Average RMS Output Split Core 4-20mA Current Output Cable Mounting 20-30VDC Loop Powered Isolated plastic case recognised according to UL94-V0 Advantages Large aperture for cable up to ? 16mm High isolation between primary and secondary circuits Easy installation Applications Current Measurement Energy Management Motor Control Actuators Lamp Failure Specification LEM Part Number AT 150 B420L Technology AC Current Transformer Protection Class IP50 Supply Voltage 20-30VDC Loop Powered (10mA) Load Current (RMS) 150 Amp Maximum Measurement Current (RMS) 180 Amp Output 4-20mA (Average RMS) Isolation 3.5kV (AC, 50Hz, 1 min) Bandwidth 45 - 65Hz Mounting Style Din Rail Mount Operating Temperature Range -10°C / 65°C Accuracy 1.5% Termination Style Screw Aperture ? 16mm Approvals CE,UL,ROHS Unit Weight 90g Factory Pack Qty 6 Datasheet Product Datasheet

Read more less

LEM AT 10 B5, Split Core AC Current Transformer, Self Powered, 10 Amp Average RMS 0-5V output Features Split Core 0-5V Average RMS Output Cable Mounting Self Powered Isolated plastic case recognised according to UL94-V0 Advantages Large aperture for cable up to ? 16mm High isolation between primary and secondary circuits Easy installation Applications Current Measurement Energy Management Motor Control Actuators Lamp Failure Specification LEM Part Number AT 10 B5 Technology AC Current Transformer Protection Class IP50 Supply Voltage Self Powered Load Current (RMS) 10 Amp Maximum Measurement Current (RMS) Output 0-5V (Average RMS) Isolation 3.5kV (AC, 50Hz, 1 min) Bandwidth 55 - 65Hz Mounting Style Din Rail Mount Operating Temperature Range -10°C / 65°C Accuracy 1.5% Aperture ? 16mm Termination Style Screw Approvals CE,UL,ROHS Unit Weight 90g Factory Pack Qty 6 Datasheet Product Datasheet

Read more less

LEM AHR 2000 B420, Hall Effect Current Transducer, 2000A, 4-20mA True RMS output, 20-50VDC supply Compact and versatile transducers for high AC and DC currents from 500 to 2000A True RMS with signal conditioning. Choice of output types: 4-20 mA, 0-5 V or 0-10 V, Bandwidth: DC 20..6000 Hz Features Split Core VFD and SCR waveforms current measurement True RMS output 4-20mA current output Busbar mounting Eliminates insertion loss Isolated plastic case recognised according to UL94-V0 Advantages Large aperture for cable or busbar up to 104 x 40mm High isolation between primary and secondary circuits Easy installation Applications -AC Power Supplies or Motors True RMS sensing - the most accurate way to monitor power supply or input power -VFD Controlled Loads VFD output indicates how the motor and attached load are operating -SCR Controlled Loads Accurate measurement of phase angle fired or burst fired(time proportional) SCR's and switch mode rectifiers. Current measurement gives faster response than temperature measurement. -Renewable Energy Installations or Backup Batteries Continuous condition monitoring allowing automatic failure detection and prediction -Application Domain Energy and Automation Specification LEM Part Number AHR 2000 B420 Technology Open Loop Hall Effect ROHS Yes Supply Voltage 20 - 50V Nominal Current (RMS + DC) 2000 Amp Maximum Measurement Current (Peak) 3000 Amp Output 4-20mA Isolation 5.8kV (AC, 50Hz, 1 min) Bandwidth 20-6000Hz Mounting Style Panel Mount Operating Temperature Range -40°C / 85°C Accuracy 1% Termination Style SFKC 2.5/4-ST-5.08-RF(Phoenix Contact) Unit Weight 650g Factory Pack Qty 6   Datasheet Product Datasheet Application Notes LEM Applications Manual 3rd Edition  

Read more less