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

 

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