252-550kV FRP Capacitive Transformer Bushing (draw lead type)

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Electrical & Grid

Transformer Accessories

Nominal voltage (kV)：220-500
Rated voltage (the highest voltage of the equipment) (kV)：252-550
Dry Frequency withstand voltage (kV/min)：505-870
Wet Frequency withstand voltage (kV/min)：460-535
Whole Wave Thunder impulse withstands voltage (kV)：1050-1800
Intercepted WaveThunder impulse withstands voltage (kV)：1155-1980
Maximum Dielectric dissipation factor： At 1.05Um, the lower limit should not be over 0.4%
Increment Dielectric dissipation factor： At 1.05Um, the variation to Um should not be over 0.1%
Test tap insulation level (kV/min)：3
Um Local discharge (pC): ≤10
1.05Um/√3 Local discharge (pC): ≤5
leakage test: 0.6MPa/20min without leakage
Thermal short-time current: 25 times the bushing rated current, the maximum is 100kA, and lasts 2S
Outdoor creepage extender: 50

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DESCRIPTION

Specification

Product Code			BT906	BT907	BT908	BT909	BT910	BT916	BT917	BT918	BT919	BT920
Specification			QXFBRGWD-252/630-3	QXFBRGWD-L-252/630-4	QXFBRGWD-L-252/630-4	QXFBRGWD-L-252/630-4	QXFBRGWD-L-252/1250-4	QXFBRGWD-L-252/1250-4	QXFBRGWD-L-252/1250-4	QXFBRGWD-L-252/1250-4	QXFBRGWD-L-252/1250-4	QXFBRGWD-L-252/1250-4
Total Length		L	3590	3790	3990	4090	4290	3620	3820	4020	4120	4320
Air Wiring Terminal	Hole Distance	a1	40	40	40	40	40	40	50	50	50	50
	Board Size	a2*a3	80*80	80*80	80*80	80*80	80*80	80*80	100*100	100*100	100*100	100*100
	Holes Number*Holes Diameter	n1*φd1	4*φ14	4*φ14	4*φ14	4*φ14	4*φ14	4*φ14	4*φ18	4*φ18	4*φ18	4*φ18
	Thickness	δ1	12	12	12	12	12	12	16	16	16	16
Outdoor Creepage Extender	Insulation Clearance	L1	2210	2210	2210	2210	2210	2210	2210	2210	2210	2210
Outdoor Creepage Extender	Max. Creepage Extender Out Diameter	φD2	490	490	490	490	490	490	490	490	490	490
Mounting Flange	Length	L4	180	180	180	180	180	180	180	180	180	180
	Hole Center Distance	φD3	500	500	500	500	500	500	500	500	500	500
	Hole Diameter	φD6	550	550	550	550	550	550	550	550	550	550
	Holes Number*Holes Diameter	n2*d2	12*φ24	12*φ24	12*φ24	12*φ24	12*φ24	12*φ24	12*φ24	12*φ24	12*φ24	12*φ24
	Vent Hole Position	L5	160	160	160	160	160	160	160	160	160	160
	Thickness	δ2	26	26	26	26	26	26	26	26	26	26
Oil-end Core	Total Length	L2	890	1090	1290	1390	1590	890	1090	1290	1390	1590
	Earth Length	L3	0	200	400	500	700	0	200	400	500	700
	Core Diameter	φD4	260	260	260	260	260	260	260	260	260	260
Upper Equalizing	Height	H	130	130	130	130	130	130	130	130	130	130
Upper Equalizing	Diameter	φX	200	200	200	200	200	200	200	200	200	200
General’s Socket Diameter		φD1	162	162	162	162	162	162	162	162	162	162
Pipe Diameter		φD5	60	60	60	60	60	60	60	60	60	60
Lead Connector		φD7	32	32	32	32	32	35	35	35	35	35
Cable Entry Length		L6	3330	3530	3730	3830	4030	3330	3530	3730	3830	4030
Weight (kg)			350	370	400	410	430	350	370	400	410	430

For more information about the product, please get in touch with info@wishpower.net for support.

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