1. Operating gear switch pursuant to its operational function
Testing Switch Gear
Operating gear switch pursuant to its operational function

2. Switchgear is a mechanism cut out of mainspring pursuant to spiral spring energy or air pressure ( pneumatic) or oil pressure ( hydraulic)

3. Mechanism activator of PMT use spiral spring in a state of closed to be seen from next side

4. Mechanism activator of PMT using spiral spring of open situation seen from next side

5. When filling spiral spring tension, one way wheel, that is wheel of No 2. turned around up at which did not turn around axis but adding to tend spiral spring. After spiral spring loaded (curiously), hence spiral spring ready to close PMT. By opening to sprag first spiral spring, that is by drawing to sprag this with conclusion bobbin ( coil closing), hence spiral spring will release desisted movement by second spragging
Movement spiral spring from spragging first to spragging second have turned around wheel of No. 1 ( one ) 180 degree of turning around contacts power bar of PMT so that close, then PMT input

6. If spragging secondly pulled by opener bobbin ( coil trip), hence wheel of No. 1 ( first rotary) 180 degree again and 180 degree again and contact power bar contact peripatetic PMT open contacts of PMT last Trip PMT
After PMT trip, spiral spring becoming not convulsively again because have not save energy and electrics network of PMT automatic move direct-current motor add to tend spiral spring by way of turning around wheel up at which did not turn around axis ( instruct spiral spring tension)
Motor filler of spiral spring of direct-current motor have to moved by battery accumulator because in a state of trouble often alternating voltage supplier in building lose so that motor filler of spiral spring remain to earn to function with supply energy which battery supplier

7. Mechanism activator of PMT use spiral spring seen from from other sideing

8. Coil trip and of closing coil also use direct current tension which supply by battery
Battery have to rely on for the efficacy of activity of PMT. Battery require to be looked after better and its condition require to be watched continually. Failure of PMT work to earn happened effect of battery too low its ability so that unable to coil to trip of PMT and finally PMT did not work if happened trouble current and can fatal cause and even instakasi earn burnt
In practice, PMT made trip to through coil trip by relay ( appliance of proteksi) or by operator ( manual), while inclusion of PMT [pass/through] coil closing most conducted manually by operator

9. Comprehending mantenance repair of gear switch
Testing Switch Gear
Comprehending mantenance repair of gear switch

10. Kinds of switchgear for example is Gas Insulated Switchgear ( GIS) have active pressure 550kV, 300kV, 84kV, and 72,5kV; Gas Switchgear Combined ( GSC) owning active pressure 550kV, 300 kV, 245 kV, and 72,5kV

11. Gas Insulated Switchgear (GIS) 72,5kV

12. Gas Switchgear Combined (GSC) 300 kV

58. Testing operational switch gear
Tests must be come out under the safety conditions required by the standards in force and under the responsibility of a component authority

60. Checking the CTs
For :
Relative direction of primary and secondary windings
Transformation ratio

62. Tests on the cables
Disengage the circuit-breaker. Make sure that no part are live. Close the earthing switch and check that the “earthing swirch closed “ position indicator appears

65. Electrical Power Plant
Created by
Power Gen. Team
SMK PGRI 3 Malang
2009
THE END