Trailing Cable Protection Relays

SE-134C Series

Added to List
  • Protects portable equipment from hazardous voltages
  • Proven in monitoring trailing cables on large mobile equipment
  • High-induced-ac rejection for applications with high voltages and long cables

Description

The Littelfuse SE-134C is a microprocessor-based, combination earth-wire monitor and earth-fault relay for resistance-earthed or solidly earthed systems. It continuously monitors the integrity of the earth conductor to protect portable equipment from hazardous voltages caused by earth faults. 

The SE-134C 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.

We are the exclusive NSW supplier of Littelfuse protection relays and controls for the protection, safe control and distribution of electrical power in industrial applications.

Adjustable pickup (0.5 - 12.5 A)

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

Adjustable time delay (1 - 2.5 s)

Adjustable trip delay for quick protection and system coordination.

Output contacts

Separate annunciation of earth-fault and earth-check faults.

Earth-check LED indication

Indication of open or short earth-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 earth-check loop verification.

Fail-safe circuits

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

Conformal coating

Additional coating protects circuit boards against harsh environments.

Data Sheets and Manuals

SE-134C Data SheetSE-134C ManualLittelfuse Protection Relays Earth-Fault Paper TNEarth-Fault Protection and Earth-Conductor Monitoring for Portable Mine-Power Cables

CAD Drawings and Models

SE-ta6a CAD DrawingSE-134r13 CAD Drawing

IEEE Device Numbers

Checking or Interlocking Relay (3GC), Earth fault (50G/N, 51G/N)

Input Voltage

65-265 Vac; 85-275 Vdc; 18-72 Vdc

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

C-Tick, CE

Conformally Coated

Standard feature

Warranty

5 years

Mounting

Panel, Surface

GC Trip Resistance

28Ω (Standard), 45Ω (XGC Option)

Makes Perfect Sense

Exceptional choice, exclusive ranges, high stock levels, excellent value and a passion for expert personal service. Why would you look anywhere else for your electrical, lighting, air conditioning and refrigeration needs?

60

YEARS PROVIDING EXPERT SOLUTIONS