3-Phase voltage/phase monitor from Littelfuse

Littelfuse 201A Voltage/Phase Monitor 

from Sords Electric

For a quote, please contact us HERE!

The 201A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V range. The 201A includes advanced single LED diagnostics, where color and different 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’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. 

Littelfuse 201A 3-Phase Voltage/Phase Monitor

 

 

 

 

 

 

 

 

 

 

Features and Benefits

Proprietary microcontroller based circuitry 

Constant monitoring of single-phase, low voltage, voltage unbalance, phase reversal, harmful power line conditions. High voltage monitoring optional. 

 

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 - 480VAC. Saves setup time. 

 

Advanced LED diagnostics 

Quick visual indicator for cause of trip. LED indications include: normal operation, power-up restart delay, reverse-phase trip, unbalance/single-phase trip, high/low voltage trip

Specifications  

Frequency 50/60Hz

Functional Characteristics

Low Voltage (% of setpoint)

Trip 9 0% ±1% 

Reset 9 3% ±1%Voltage Unbalance (NEMA)Trip 6%Reset 4.5% 

Optional High Voltage (% of setpoint) Trip 110 % ±1% Reset 10 7% ±1% 

Trip Delay Time >> High/Low Voltage Fault 4 seconds 

Unbalance & Phasing Faults >>  2 seconds 

Restart Delay Time 

After a Fault >>  2 seconds 

After a Complete Power >>  Loss 2 seconds 

Output Characteristics 

Output Contact Rating (SPDT)

Pilot Duty 480VA @ 240VAC 

General Purpose >> 10A @ 240VAC 

General Characteristics

Temperature Range >> -20° to 70°C (-4° to 158°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 

Transient Protection (Internal) >>  2500V for 10 ms

Standards Passed

Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV airRadio 

Frequency Immunity (RFI), Radiated15 0MHz, 10V/m 

Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power & controls 

Surge 

Immunity IEC IEC 61000-4-5, Level 3, 4kV line-to-line;Level 4, 4kV line-to-ground 

ANSI/IEEEC62.41 Surge and Ring Wave Compliance to a level of 6kV line-to-line 

Hi-potential Test Meets UL508 (2 x rated V + 1000V for 1 min.) 

Safety Marks 

UL   (OT08PC octal socket required) UL508 (File #E68520)

CE   IEC 60947-6-2 

Dimensions H 44.45 mm (1.75”); W 60.33 mm (2.38”); D (with socket) 104.78 mm (4.13”)  

Weight 0.7 lbs. (11.2 oz., 317.51 g) 

Mounting Method >> DIN rail or surface mount (plug in to OT08PC socket) 

Socket Available Model OT08PC (UL Rating 600V)

 

For a quote, please contact us HERE!

Sords Electric

216-765-4230

www.sordselectric.com

 

Littelfuse 201A...Littelfuse 201A...Littelfuse 201A...Littelfuse 201A

3=Phase Voltage/Phase Monitor from Littelfuse

202/202-RP Series - 3-Phase Voltage/Phase Monitor from Littelfuse 

from Sords Electric

For a quote, please Contact us HERE!

The 202 series is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-600VAC, 50/60Hz motors regardless of size. The 202-RP monitors the phase rotation of 3-phase systems and trips on reverse phase only. Critical applications include fan motors, scroll compressors, grinders, conveyor systems, elevators and escalators. Both products provide a user selectable nominal voltage set point and some models automatically select between the 200V and 400V range.

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 202 series’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. The 202 series includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions. The 202-RP monitors the phase rotation of 3-phase systems and trips on reverse phase only. Critical applications include fan motors, scroll compressors, grinders, conveyor systems, elevators and escalators. The status light turns green and the relay is activated when rotation is correct.

Littelfuse 202/202-RP phase/voltage relays

 

 

 

 

 

 

 

 

Features & Benefits

Compact, quick mounting design >> 1-screw mounting saves time and space. Small footprint ideal for assembly into panels. 

Proprietary microcontroller based circuitry>>Constant monitoring of single-phase, low voltage, high voltage, voltage unbalance, phase reversal, harmful power line conditions.  

Auto-sensing wide voltage range (202 & 202-RP) >> Automatically senses system voltage between 90 - 480VAC. Saves setup time. 

Advanced LED diagnostics >> Quick visual indicator for cause of trip. LED indications include: normal operation, restart delay, reverse-phase trip, fault 

Adjustable trip delay (202) >> Prevent nuisance tripping due to rapidly fluctuating power line conditions. 

 Models:

202  190-480 VAC  Trips on low/high voltage and voltage unbalance. 

202-RP  190-480 VAC  Trips on reverse-phase only

202-575-RP  475-600 VAC  Trips on reverse-phase only

 

Specifications  

Frequency  50 */ 60 Hz 

 

Functional Characteristics 

 

Phase Sequence >> ABC

Low Voltage (% of setpoint) >>Trip 90% & Reset 93% 

 

High Voltage (% of setpoint) 

Trip 110 %  >> Reset 107% 

 

Voltage Unbalance (NEMA) >> Trip 6% & Reset 4.5% 

Trip Delay Time High and Low Voltage >> 4 seconds 

Unbalance & Phasing Faults >> 2 seconds 

Restart Delay Time After a Fault Manual >> 2-300 seconds adj. 

After a Complete Power Loss Manual >> 2-300 seconds adj.

 

Output Characteristics 

 

Output Contact Rating (SPDT) 

Pilot Duty >> 480VA @ 24 0VAC 

General Purpose10A @ 240VAC 

 

General Characteristics 

 

Temperature Range >> -40° to 70°C (-40° to 158°F) 

Trip & Reset Accuracy >>  ±1% 

Repeatability  ±0.5% 

Maximum Input Power >>  5 W 

Relative Humidity >> 95%, non-condensing 

Transient Protection >>  IEC 61000-4-5, ±4kV 

Hi-potential >> Test Meets UL508 (2x rated V+1000V for 1 minute) 

Termination >> 0.25” male quick connect 

 

Safety Marks 

 

UL Recognized >> UL508 (File #E68520)

Dimensions >>  H 63.5 mm (2.5”); W 63.5 mm (2.5”); D 35.56 mm (1.4”) 

Weight >>  0.5 lb. (8 oz., 226.8 g) 

Mounting Method >> 1/4” socket head cap screw(customer supplied) 

 

*Note: 50Hz will increase all delay timers by 20%. CE Pending

 

For a quote, please Contact us HERE!

Sords Electric

216-765-4230

www.sordselectric.com

 

Littelfuse 202...Littelfuse 202...Littelfuse 202...Littelfuse 202...

TRC Digital Power Monitor

Sords Electric Stocks the TRC Digital Power Monitor
Electra Check!  TRC Part Number is AECM20020

Contact Sords Electric HERE!

This compact, easy to use instrument is made with advanced microelectronics and provides accurate testing and monitoring of electrical outlets and systems. Constantly monitors voltage and grequency indications potential inproper polarity and ground wiring.  Its small size and rugged construction allows for convenient installation in an electrical outlet or use as a portable service tool.

Intallation of the AECM20020 Digital Monitor is for use in a standard 120V/a5A outlet.  It is suitable for continuous or occasional use.  The viewing angle of the LCD display is optimized for viewing at a 12:00 viewing position.  Looking directly at or down at the unit while mounted in a low outlet gives the best viewing contrast.
The voltage is measured is RMS which is much more precise that AC average.  RMS metering is the only method tat can accurately measure all AC power sources.  THE RMS voltage and frequency readings are ideal for monitoring modified sine waves, such as solid-state generators, inverters and Uninterruptible Power Supply (UPS) products.
Operation
The digital monitor display will alternate between line voltage in RMS and line Frequency in Hertz. The LCD display shows an F in front of the reading to denote frequency.

Voltage range is 85-150 VAC RMS.
Over voltage arm is at 135 VAC RMS
Frequency range is 40 Hz to 80 Hz
Under frequency is 55 Hz
Power rating is 2 watts
Operating current is .02 amps

Call for pricing on the TRC Voltage Monitor AECM20020
Contact page is HERE!


Sords Electric
216-765-4230
www.sordselectric.com

ATC SLM Voltage Monitor

Sords Electric sells the ATC SLM series 3 Phase Voltage Monitor

The SLM Series Microprocessor-based Three-Phase Monitor from the ATC Diversified Electronics division of Marsh Bellofram Corporation is a microprocessor based 3 phase monitor. This device protects 3 phase equipment from under voltage, over voltage, phase loss, phase reversal, phase unbalance, phase shift and frequency shift. Models available up to 690 vac and comes complete with automatic or manual reset, delay-on-make timer, LED indicators for fault conditions and last fault memory.

ATC Diversified Voltage Monitor SLM

Features

Models available to 690 VAC

Automatic or Manual Reset

Delay-On-Make Timer

LED Indicators for Fault Conditions

Last Fault Memory

Screw Driver Adjustment for Time Delay, 

Voltage and Mode of Operation

The ATC Diversified voltage monitor 

SLM series protects against :

Under Voltage

Over Voltage

Phase Loss

Phase Reversal

Phase Unbalance

Phase Shift

Frequency Shift

Part Numbers are :

SLM-120-ASE (Max Voltage is 143)
SLM-230-ASE (Max Voltage is 275)
SLM-380-ASE (Max Voltage is 457)
SLM-440-ASE (Max Voltage is 540)
SLM-575-ASE (Max Voltage is 690)


Sords Electric
216-765-4230
www.sordselectric.com