Littelfuse SE-134C Series - Ground-Fault Ground-Check Monitor

Littelfuse SE-134C and SE-135 Ground Fault Monitor

from Sords Electric

The Littelfuse SE-134C/SE-135 is a microprocessor-based, combination ground-wire monitor and ground-fault relay for resistance-grounded or solidly grounded systems. It continuously monitors the integrity of the ground conductor to protect portable equipment from hazardous voltages caused by ground faults. The Littelfuse SE-134C/SE-135 is field proven in monitoring trailing cables on large mobile equipment such as drag-lines, mining shovels, shore-to-ship power cables, dock-side cranes, stacker-reclaimers, submersible pumps, and portable conveyors.

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Features & Benefits

Adjustable pickup (0.5 - 12.5 A for SE-CS10)(2 - 50 A for SE-CS40) 

Unit can be used on a wide variety of trailing cable applications 

 

Adjustable time delay(0.1 - 2.5 s) 

Adjustable trip delay for quick protection and system coordination 

 

Output contacts 

Separate annunciation of ground-fault and ground-check faults

 

Ground-check LED indication 

Indication of open or short ground-check wire makes it easier to find faults

 

CT-loop monitoring

Alarms when CT is not connected

 

High-induced-ac rejection 

Makes unit suitable for applications with high voltages and long cables 

 

DFT (Harmonic) filter 

Prevents false operation

 

Zener-characteristic termination assembly 

Provides reliable ground-check loop verification 

 

Fail-safe circuits 

Ensures ground-check and ground-fault circuits remain safe even in the event of equipment failure 

 

Conformal coating 

Additional coating protects circuit boards against harsh environment 

 

XGC option

Increases maximum cable length for ground-check monitoring (10 km typical)

 

Littelfuse Ground Fault Check Monitor

 - SE-134C & SE-135

 

 

 

 

 

 

 

 

Specifications

IEEE Device Numbers     Checking or Interlocking Relay (3GC), Ground fault (50G/N, 51G/N)

Input Voltage   65-265 V ac; 85-275 V dc; 18-72 V dc 

Dimensions   H 213 mm (8.4"); W 99 mm (3.9"); D 132 mm (5.2"); 

Trip Level Settings   0.5-12.5 A for SE-CS10, 2 - 50 A for SE-CS40 

Trip Time Settings   0.1-2.5 s 

Contact Operating Mode   Selectable fail-safe or non-fail-safe

Harmonic Filtering   Standard feature 

Test Button     Standard feature 

Reset Button   Standard feature

Output Contacts   Isolated Form A and Form B, Two Form C 

Approvals    CSA certified, UL Listed (E340889), RCM (Australia)(3), CE(3) 

Conformally Coated    Standard feature 

Warranty   5 years 

Mounting   Panel, Surface  

GC Trip Resistance   28 Ω (Standard), 45Ω (XGC Option)

Accessories

SE-CS10 or SE-CS40 Series Ground-Fault Current Transformer 

Required zero-sequence current transformer detects ground-fault current.

 

SE-TA6A Series, SE-TA12A Series Termination Assembly 

Required termination assembly; temperature compensated.

 

Part Numbers:

Littelfuse SE-134C00  120/240 AC/DC 

Littelfuse SE-134C10  24/48 VDC

Littelfuse SE-134CXGC00  120/240 AC/DC

Littelfuse SE-134CXGC10  24/48 VDC 

Littelfuse SE-13500  120/240 AC/DC

Littelfuse SE-135XGC00  120/240 AC/DC

Littelfuse SE-13503  120/240 AC/DC & Ethernet

Littelfuse SE-135XGC03  120/240 AC/DC & Ethernet

Littelfuse SE-13510  24/48 VDC

Littelfuse SE-135XGC10  24/48 VDC

Littelfuse SE-13513  24/48 VDC & Ethernet

Littelfuse SE-135XGC13  24/48 VDC & Ethernet

To get a quote, please click HERE!

Sords Electric

216-765-4230

www.sordselectric.com

Littelfuse SE-134C...Littelfuse SE-135...Littelfuse SE-134C...Littelfuse SE-135

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...