Technological map for the maintenance of transformers. Repair of power transformers. Preparatory work and permission to work
Including reconstruction (changes in structural elements) and modernization (changes in rated voltages and powers).
produced by the Khmelnitsky plant PJSC (Ukrelectroapparat) with a manufacturer's guarantee.
Supply voltage: 6 kV, 10 kV, 35 kV, non-standard.
Output voltage: 0.23 kV, 0.4 kV, 0.5 kV, 0.66 kV, non-standard.
We always fulfill our obligations, so our Customers can count on a decent level of service and quality work done.
Current repairs of transformers with a capacity of 10,000 - 63,000 kV-A 1. Composition of performers
Electromechanic - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
Preparatory work and permission to work
4.1. On the eve of the work, submit an application for repair of the trans
formatter.
4.2. Check the serviceability and expiration dates of protective equipment, equipment
ditch, prepare tools, installation equipment and materials.
4.3. After issuing the work order to the work contractor, receive instructions from
the person who issued the outfit.
4.4. Operating personnel prepare the workplace.
The work foreman checks the implementation of technical measures for
preparation of the workplace.
4.5. Clear the team for work.
4.6. The work foreman will instruct the team members and clearly
distribute responsibilities between them.
Completion of technological art No. 2.2.
| Changing oil in hydraulic seals of oil-filled bushings A silica gel in moisture-absorbing cartridges (see rns. 2.1.1., Fig. 2. 1.3.) | The state of silica gel in desiccant cartridges is determined by the color of the indicator silica gel. If the color changes from blue to pink, replace the silica gel in the cartridges and the oil in the water seal. Replace Siliga gel in dry weather, taking the dehumidifier out of operation for no more than one hour. Check the oil level in the hydraulic seal. Replacing silica gel is carried out as follows: disconnect the cartridge from the input, replace the silica gel, having previously cleaned the cartridge of contaminants, replace the oil in the hydraulic seal, attach the cartridge to the input | |
| Checking the operating condition of transformer taps and dampers | Check compliance with the operating position of devices, taps, and dampers. Carry out an inspection to check the oil level in the inputs and tanks of the transformer. Record the readings of thermal alarms, oil level indicators, air temperature, and the position of the switches of all windings |
Note. All operations with oil-filled and bushings for voltage 110-220 kV must be performed together with a RRU specialist.
Completion of work
Technological map No. 2.3. Current repair of autotransformers for voltage 110-220 kV
Performers
Electromechanic - 1
Electrician of traction substation 4 categories - 1
Electrician of traction substation 3rd category - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
3. Protective equipment, devices, tools, accessories and materials:
Protective helmets, safety belt, ladder, grounding, short-circuits, dielectric gloves, megohmmeter for voltage 1000 and 2500 V, stopwatch, thermometer, level, pump with pressure gauge and hose, wrenches, combination pliers, screwdrivers, scraper, brushes, container for draining sediment, glass containers with a ground stopper for taking oil samples, indicator silica gel, silica gel, transformer oil, CIA-TIM lubricant, white spirit, moisture-oil-resistant varnish or enamel, spare oil indicator glasses, rubber gaskets, cleaning material, rags
Technological map No. 2.4. Current repairs of transformers with a capacity of 40 - 630 kVA
Performers
Electromechanic - 1
Electrician of traction substation 3rd category - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
3. Protective equipment, devices, tools, accessories and materials:
Protective helmets, safety belt, ladder, grounding, short-circuits, dielectric gloves, megohmmeter for voltage 1000 and 2500 V, stopwatch, thermometer, level, pump with pressure gauge and hose, wrenches, combination pliers, screwdrivers, scraper, brushes, container for draining sediment, glass containers with a ground stopper for taking oil samples, indicator silica gel, silica gel, zeolite, transformer oil, CIATIM lubricant, white spirit, moisture-oil-resistant varnish or enamel, spare oil indicator glasses, rubber gaskets, wiping material, rags
Oil switches
Continuation of technological map No. 3.1.
Performers
Electromechanic - 1
Traction substation electrician 4 categories - 1 Traction substation electrician 3 categories - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
3. Protective equipment, devices, tools, accessories and materials:
Protective helmets, safety belt, ladder, grounding, short circuits, dielectric gloves, megohmmeter for voltage 1000 and 2500 V, electric stopwatch, wrenches, combination pliers, screwdrivers, scraper, brushes, glass containers with ground stopper for oil sampling, silica gel indicator, silica gel, transformer oil, CIATIM lubricant, white spirit, insulating varnish, spare oil indicator glasses, rubber gaskets, cleaning material, rags
Performers
Electromechanic - 1
Electrician of traction substation 3rd category - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
3. Protective equipment, devices, tools, accessories and materials:
Protective helmets, safety belt, ladder, grounding, short circuits, dielectric gloves, megohmmeter for voltage 1000 and 2500 V, testing machine type LVI-100, electric stopwatch, wrenches, combination pliers, screwdrivers, scraper, brushes, transformer oil, CIATIM lubricant, white spirit, insulating varnish, spare oil indicator glasses, rubber gaskets, cleaning material, rags
Completion of work
6.1. Collect instruments, tools, fixtures and materials.
6.2. Return to the switchboard of the traction substation.
6.3. Pass workplace admitting and close the outfit
6.4. The results of the measurements taken should be documented in a protocol.
Performers
Electromechanic - 1
Electrician of traction substation 3rd category - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
3. Protective equipment, devices, tools, accessories and materials:
Protective helmets, grounding, shorting, dielectric gloves, megohmmeter for voltage 1000 and 2500 V, electric stopwatch, wrenches, combination pliers, screwdrivers, scraper, transformer oil, CIA-TIM lubricant, white spirit, insulating varnish, spare oil indicator glasses, rubber gaskets, cleaning material, rags
Completion of work
6.1. Collect instruments, tools, fixtures and materials.
6.2. Return to the switchboard of the traction substation.
6.3. Hand over the workplace to the admitting person and close the work order
6.4. The results of the measurements taken should be documented in a protocol.
Performers
Electromechanic - 1
Electrician of traction substation 4 categories - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
3. Protective equipment, devices, tools, accessories and materials:
Megohmmeter for voltage 500 and 2500 V, tester, electric soldering iron, vacuum cleaner, calibration wrench, wrenches, combination pliers, screwdrivers, files, scraper, test lamp, hair brush, wooden ladder, stepladder, white spirit, wiping material, CIATIM lubricant
Completion of work
6.1. Collect instruments, tools, fixtures and materials.
6.2. Return to the switchboard of the traction substation.
6.3. Hand over the workplace to the admitting person and close the work order
6.4. The results of the measurements taken should be documented in a protocol.
Performers
Electromechanic - 1
Electrician of traction substation 4 categories - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
3. Protective equipment, devices, tools, accessories and materials:
Ohmmeter, portable lamp, vacuum cleaner, wrenches and sockets, screwdrivers, ruler, calipers, files, scraper, wire brush, set of probes, files for cleaning switch contacts, wooden stick, sandpaper, white and carbon paper, white spirit, lubricant CIATIM, rags, cleaning material
Performers
Electromechanic - 1
Electrician of traction substation 4 categories - 1
Conditions for performing work
Work in progress:
2.1. With stress relief
2.2. Alongside
3. Protective equipment, devices, tools, accessories and materials:
Stopwatch, portable lamp, vacuum cleaner, wrenches and sockets, screwdrivers, ruler, calipers, files, scraper, wire brush, set of feeler gauges, files for cleaning switch contacts, glass cloth, wooden stick, sandpaper, white and carbon paper, white spirit, CIA-TIM lubricant, rags, cleaning material
Transformers Technological map No. 2.1.
) on open switchgears, when drawing up construction organization projects (COP) and electrical installation work projects (PPER).
Current transformers of the TFZM and TFRM series (single-phase, electromagnetic, oil, outdoor installation, support type) are designed for transmitting an information signal measuring instruments, protection and control devices in AC installations.
Current transformers (hereinafter referred to as "transformers"") TFZM 500 B and TFRM 750 A are made in the form of two stages (lower and upper), the rest are single-stage. Transformers 220 - 750 kV have a screen on the expander, and two-stage transformers, in addition, have an additional screen covering the joint of the stages.
The technological map contains instructions for organitions and installation technologies, a list of mechanisms, tools, information on material costs, calculation of labor costs and work schedules.
The map assumes that work related to the installation of transformers is carried out directly at the installation site, at the place of their installation, etc.
All calculated indicators in the map are given for the installation of one group (three phases) of transformers.
Labor costs for setup work, installation schedules andcalculations are not taken into account.
The technological map has been developed in accordance with " Methodical instructions on the development of standard technological maps in construction." M., TsNIIOMTP Gosstroy USSR, 1987.
Prohibits to open transformers and take oil samples.
Installation should be carried out with the participation of the chief engineer of the manufacturer.
Technical criteria and controls for operations and processes are given in Table. . Acceptance inspection of mounted transformers is carried out in accordance with SNiP 3.05.06-85. When accepting work, they present documentation in accordance with the list of appendices. .
