T7

Specifications

Short-circuit strength (in KA)
Tap Changer Model	PG III 200	PG III 300	PG III 500	PG I 200	PG I 300	PG I 500	PG I 800	PG I 1200
Number of poles and application	3(Neutral)	3(Neutral)	3(Neutral)	1	1	1	1	1
Maximum rated through-current (In A)	200	300	500	200	300	500	800	1200
theramic	3.5/2sec	3.5/2sec	8/3sec	3.5/2sec	3.5/2sec	8/3sec	8/3sec	25/3sec
dynamic(peak value)	8.75	8.75	20	8.75	8.75	20	20	62.5
Step voltage per phase(In V)	2500	2500	2500	2500	2500	2500	2500	2500
Insulation to Ground					Voltage class (kv)
Insulation to Ground					66	132	170	220
Highest voltage for equipment Um (In kv,50 Hz)					72.5	132	170	245
Rated Impulse withstand voltage (In kv,1.2/50)					350	550	750	900
Rated power frequency withstand voltage(In kv,50 Hz,1 min.)					140	230	325	390
Rated switching capacity (In KVA)	825	825	825	825	825	825	825	825
Operating Positions	Without change-over selector: max.18 With change-over selector: max.35
Internal Insulation
Tap Selector	C type Selector
Diverter Switch Oil Compartment	Pressure-proof up to 0.3 bar(test pressure 0.8 bar),vacuum-proof for drying standard equipment.
Oil Suction Pipe	Standard Equipment.
Tap-changer Model		PG III 200 /PG III 300/PG III 500			PG I 200/PG I 300/PG I 500		PG I 800	PG I 1200
Weight in Kg	without change-over selector	400			410		420	445
Weight in Kg	With changeover selector	424			434		445	469
Displacement – Volume in dm 3	66 kv	279			261		273	279
	132 kv	311			292		305	311
	170 kv	336			316		330	336
	220 kv	362			343		356	362
Volume Δv of Oil conservation in dm3		Vs					Δv=0.1Vs+4
	66 kv	188					22.8
	132 kv	205					24.5
	170 kv	240					28
	220 kv	264					30.4