TEHRI PSP

A. Pump turbine

1. Rated speed : 230.77 rpm2. Operating speed variation range : 210 to 250 rpm3. Runaway speed : 359 rpm4. Speed rise(load rejection) : 167 %5. Minimum gross head : 127.5 m (turbine & pump) 6. Maximum gross head : 227 m (turbine) , 224 m (pump)7. Rated net head : 188m8. Minimum net head : 123.4 m(turbine) , 130.2 m (pump)9. Maximum net head : 224.1 m(turbine) , 228.9 m (pump10.Turbine rated output at rated net head 188m : 255MW

Guide vane opening: 81%Speed : 224.5 rpmDischarge : 151.9 m3/sEfficiency : 91.39%

11.Turbine output at minimum net head of 123.4m : 120 MWGuide vane opening: 72%Speed : 210.5 rpmDischarge : 108.3 m3/sEfficiency : 91.84%

12. Pump input at rated net head 188m : 205MWGuide vane opening: 60%Speed : 226 rpmDischarge : 104.8 m3/sEfficiency : 93.93%

13. Pump input at maximum net head 228.9 m : 286MWGuide vane opening: 60%Speed : 250 rpmDischarge : 116.8 m3/sEfficiency : 94.02%

B. Motor Generator

1. Capacity at rated speed,frequency,voltage : 250 MW2. Power factor : 0.9 (Gen.) , 0.95 (Motor)3. Rated speed : 230.77 rpm 210.5/248 rpm(Gen.) , 209/250 rpm(Motor)4. Rotor Voltage : 4733 Vrms5. Rotor Current : 5430 A 6. Max. rotor current : 11600 A7. Wt. of rotor : 445 Tonne8. Total inertia of rotor : 4900 t.m2