logo
  • Quality & Competence in Power Solutions
  • |
  • HOME
  • ABOUT
  • PRODUCTS
    • Low Voltage Products
      • Electrical Relays & Control
      • Switch Disconnectors
      • Enclosures
      • Circuit Protection Devices
      • Low Voltage switchgears
      • Surge Protection Devices
      • Motor Protection & Control
    • UPS Systems & Power Conditioning
      • ABB UPS Systems
      • Riello UPS Systems
      • Inform Electronic AVR Systems
    • Motion & Drive System
      • AC Drives
      • AC Motors
    • Industrial Automation & Control
      • Siemens Industrial Automation & Control
        • Contactors
        • Soft Starter
        • Motor Starter
        • Electronic & Thermal Overload Relays
        • Command & Signalling Devices
        • PLC Controllers
        • Power Supply Unit
        • Input Output Systems
        • HMI Panels
        • Motor Protection Circuit Breakers
    • Medium Voltage Products & Systems
      • Medium Voltage Switchgears
      • Circuit Breakers
      • Reclosers
      • Switches, Disconnectors & Isolators
    • Products Gallery
  • SERVICES
    • Manufacturing Services
      • Cable management & Support Systems
      • Fabrication and assembly electrical panel boards and enclosures
      • Fabrication and assembly of UPS battery racks and cabinets
      • Processed copper busbars and components
    • Support and Maintenance
      • Industrial and Commercial electrical installations
      • After Sales support and maintenance of electrical installations
      •  UPS systems and Power conditioning maintenance and support
      • Stock of Essential spare parts
      • Equipment warranty maintenance and support
    • Service Gallery
  • MARKET PLACE
  • CONTACT
  • Home|
  • Support and Maintanance>
  • After sale support and maintenance of electrical installations

After sale support and maintenance of electrical installations

We provide labor and material, on an "on-call” and “Annual Preventive maintenance arrangement” basis to maintain commercial and industrial electrical installations in accordance to agreed terms.

Visual and Mechanical Inspection, Service and Repair

  • • Document equipment nameplate data on test report.
  • • Inspection of physical and mechanical condition and cleaning of the equipment.
  • • Confirm correct application of manufacturer specified lubricants at recommended locations
  • • Verify appropriate equipment grounding.
  • • Verify correct mechanical operation.
  • • Verify and record fuse sizes and types are in accordance with record drawings.
  • • Tighten all power wiring connections to proper torque value. Check line and load side connections of all disconnect switches, breakers, contactors, and overloads.
  • • Check and tighten all control wiring connections, mounting hardware, drive control terminals and terminal block connections.
  • • Check all interlocking systems for correct operation and sequencing.
  • • Verify correct phase barrier installation.
  • • Inspect all indicating and control devices for correct operation.
  • • Check the condition of arc contacts and arc chutes.
  • • Inspect fuse holders for tightness and alignment. Verify correct fuse size and type.
  • • Verify that all power cables are properly terminated and supported.
  • • Inspect the exposed sections of cables for physical damage.
  • • Confirm all ventilation openings are clear and unobstructed.



Electrical Tests

  • • Perform insulation-resistance tests on each pole, phase-to-phase and phase-to-ground.
  • • Test all auxiliary devices (solenoid trip, blown main fuse detector, etc.) for proper operation.
  • • Perform a Contact Resistance Test.
  • • Measure fuses resistance to verify continuity.
  • • When ground fault protection is installed, verify proper calibration and operation by current injection.
  • • Verify that Hand and Auto controls, Start, Stop, and speed input, operate correctly.
  • • Check that all indicating lamps illuminate only for their assigned functions. Check all Push to Test lamps.
  • • Perform dielectric tests.
  • • Check calibration of meters.
  • • Verify correct operation of any auxiliary features such as trip and pickup indicators, trip-free, electrical close and trip operation.

Visit Our HQ Office

Plot 61 Block 46, Mwenge area, (along the street opposite to Mpakani centre building)

Contact Us

+255 754 300348 | +255 788 499111

For Information:

info@jselectromec.co.tz

For Sales:

sales@jselectromec.co.tz

Open Hours

Saturday-Sunday: Closed

Monday to Friday

8:30 AM - 05:00 PM

Public Holidays

Closed


Copyright © 2020
JS ElectroMec Ltd


Quality & Competence in Power Solutions - ISO 9001:2015 Certified Company