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  • Manufacturer or author: Provided By digicamel.com
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© 2020 Littelfuse, Inc. www.littelfuse.com/ Rev: 1-A-062716 Protection Relays Voltage Monitoring Relays www.littelfuse.com/201aau Rev: 2-A-061220

Description

The 201A-AU is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190–480 V ac, 50/60 Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200 V and 400 V range. Additional adjustment knobs allow the user to set a 1–30 second trip delay, a manual restart or 1–500 second restart delay and a 2–8% voltage unbalance trip point. The model 201A-AU includes advanced single LED diagnostics, where color and light patterns distinguish between faults and normal conditions. This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the 201A-AU’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels for a specified amount or restart delay time (or manual reset). Features & Benefits FEATURES BENEFITS Proprietary microcontroller based circuitry Constant monitoring of loss of any phase, low voltage, high voltage, voltage unbalance, phase reversal, rapid cycling, harmful power line conditions Compact design for 8-pin; DIN rail or surface mount Allows flexiblility in panel installation Auto-sensing wide voltage range Automatically senses system voltage between 190–480 V ac. Saves setup time. Advanced LED diagnostics Quick visual indicator for cause of trip. Adjustable voltage unbalance trip setting Allows compatibility with a variety of motors and reduces nuisance tripping. Adjustable trip & restart delay settings Prevent nuisance tripping due to rapidly fluctuating power line conditions. Accessories OT08PC Octal 8-pin Socket 8-pin 35 mm DIN rail or surface mount. Rated at 10A @ 600 V ac. Surface mounted with two #6 screws or snaps onto a 35 mm DIN rail.

Ordering Information

201A-AU 190–480 V ac DIN rail or surface mountable 201575-AU 475–600 V ac DIN rail or surface mountable 201A-AU-OT 190–480 V ac Sold with OT08PC socket 201-575-AU-OT 475–600 V ac Sold with OT08PC socket 3-Phase Voltage/Phase Monitor 201A-AU SERIES Wiring Diagram 201A-AU WITH MOTOR CONTROL 201A-AU WITH ALARM CONTROL LIGHT HORN TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU WITH MOTOR CONTROL TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU WITH ALARM CONTROL LIGHT HORN TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU WITH MOTOR CONTROL TYPICAL WIRING DIAGRAM FOR MODEL 201A-AU WITH ALARM CONTROL

© 2020 Littelfuse, Inc. www.littelfuse.com/ Rev: 1-A-062716 Protection Relays Voltage Monitoring Relays www.littelfuse.com/201aau Specifications Frequency 50/60 Hz Functional Characteristics Low Voltage (% of setpoint) Trip 90 % ±1 % Reset 93 % ±1 % High Voltage (% of setpoint) Trip 110 % ±1 % Reset 107 % ±1 % Voltage Unbalance (NEMA) Trip 2–8 % adjustable Reset Trip Setting Minus 1 % (5–8%) Trip Setting Minus 0.5 % (2–4%) Trip Delay Time High, Low and Unbalanced Voltage 1–30 seconds adjustable Single-Phasing Faults 1 second fixed Restart Delay Time After a Fault Manual, 1–500 seconds adj. After a Complete Power Loss Manual, 1–500 seconds adj. Output Characteristics Output Contact Rating (1-Form C) Pilot Duty 480 VA @ 240 V ac, B300 General Purpose 10 A @ 240 V ac General Characteristics Ambient Temperature Range Operating -40° to 70°C (-40° to 158°F) Storage -40° to 80°C (-40° to 176°F) Trip & Reset Accuracy ±1 % Maximum Input Power 5 W Relative Humidity 10–95 %, non-condensing per IEC 68-2-3 Terminal Torque 12 in.-lbs. (for OT08-PC socket) Wire Gauge 12-22 AWG solid or stranded 201A-AU SERIES Standards Passed Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6 kV contact, 8 kV air Radio Frequency Immunity, Radiated 150 MHz, 10 V/m Fast Transient Burst IEC 61000-4-4, Level 3, 3.5 kV input power and controls Surge IEC IEC 61000-4-5, Level 3, 4 kV line-to-line; Level 4, 4 kV line-to-ground ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a level of 6 kV line-to-line Hi-potential Test Meets UL 508 (2 x rated V +1000 V for 1 min.) Safety Marks UL (OT08PC octal socket required) UL 508 (File #E68520) Enclosure Polycarbonate Dimensions H 44.45 mm (1.75”); W 60.325 mm (2.375”); D 104.775 mm (4.125”) (with socket) Mounting Method DIN rail or surface mount (plug in to OT08PC socket) Socket Available OT08PC (UL Rating 600 V) The 600 V socket can be surface mounted or installed on DIN Rail. Note: Manufacturer’s recommended screw terminal torque for the OT Series Octal Sockets is 12 in.-lbs. Must use Model OT08PC socket for UL Rating! Rev: 2-A-061220