Maintenance and Service

STD is providing special offers for plants maintenance and service works. STD aim for provide continuous and trouble-free working of electrical equipment, and improve power quality.

  • Our service & maintenance activities, targets and advantages;
  • Increase the equipments operation life and performance
  • Decrease the operating cost
  • Provide the operation of equipments in continuos and high performance
  • Troubleshooting by predictive maintenance before equipments failure
  • Prevent the un-expected failure

7/24 Emergency Maintenance

In case of unexpected faults; we can support our customers instantly. We work 7/24 and support our customers at most 1 day after the failure occurs. We can support our customers within all kind of service (Test and Commissioning) activities.

Periodic Maintenance

Periodic maintenance is; planned maintenance activities at predetermined time intervals, based on calendar days or runtime hours of machines. The point is repair or replacement of damaged equipment is carried out before obvious problems ocur. STD can provide special solutions for customers. Also, we can support our customers within all kind of service (Test and Commissioning) activities.

  • High Voltage Substations and Equipments
    • GIS
    • AIS
  • Control and Distribution Panels
  • Medium Voltage Substations, Cubicles and Circuit Breaker Maintenance
  • Transformer Maintenance
    • Dry Type Transformers
    • Oil Type Transformers
  • On Load Tap Changer Maintenance
  • Generator Maintenance
  • Motor Maintenance
  • Relay Calibration and Maintenance
  • Compensation Panel and System Maintenance
  • Power Quality Analysis
  • Earthing Measurement
  • Battery, Inverter, Rectifier, UPS and DC System Maintenance
  • Low Voltage / Medium Voltage / High Voltage Cable Tests and Maintenance
  • Thermal Analysis
  • Busbar and Busduct Maintenance
  • High Voltage Tests
  • Customer Training

Condition Based Monitoring

Mechanical and operational conditions are periodically monitored and when unhealthy trends are detected, the troublesome parts in the machine are identified and scheduled for maintenance.
The machine/equipment would be shut down at a time when it is most convenient, and the damaged components would be replaced before it runs to failure.
One of the advantages of this approach is that the maintenance events can be scheduled in an orderly fashion.
Since maintenance work is only performed when needed, there is also a possible increase in productioncapacity.

  • Partial Discharge Analysis
  • Vibration Analysis
  • Motor Condition Monitoring
  • Power Quality Analysis
  • Rotating Machines / Transformers / GIS Online Monitoring Systems
  • Transformer oil analysis
  • Boroscope Inspection


The existing systems and all the equipments in your facility, adjusted and upgraded in parallel with new technologies. In this regard, we are able to produce solutions to our customers both in hardware and software.

  • Replacement of existing primer equipment with new versions
  • Upgrading existing relays with new Technologies
  • Upgrading relays within IEC 61850 standard

Analysis and Consultancy

In the stage of installation and duing the operation, consultancy services are provided to make situation analysis on the basis of equipment or system and to solve the problems.

  • Power Quality Analysis
  • Earthing Measurement
  • Thermal Analysis
  • Customer Training

Customer Training

The technical details and maneuvers of the equipment, the theoretical / practical application on the field, the support of all the problems encountered during the operation.

  • Some of our trainings;
  • Relays training
  • Secondary Project analysis
  • High voltage equipments test and maintenance
  • Medium voltage cubicles and circuit breakers test and maintenance
  • High voltage substations switching
  • Partial discharge measurement
  • Energy analysis