LB series of outdoor A.C. oil-insulated current transformer (CT)

• Type: Current Transformer
• Phase: Single
• Operation Condition: Outdoor
• Usage: Measurement
• Winding Form: Single Layer & Tightly Wound Type
• Insulating Medium: Insulating Oil
• Model NO.: LB, LVB
• Installation: Strut Type
• Magnetic Circuit Structure: Combined Type
• Voltage Transformation Principle: Electromagnetic Type
• Operation ambient temperature: -40 to +45 centigrade
• Altitude: not exceed 3000m
• Icing thickness: 10mm
• Pollution Grade: 3 or 4
• Site: indoor or outdoor
• Transport Package: Wooden
• Specification: from 35KV to 550KV
• Trademark: XD
• Origin: China
• HS Code: 8504311000
• Production Capacity: 200000

Product Description

General Introduction

LB series of outdoor A.C. oil-insulated current transformer (CT) is suitable for power system of rated system voltage from 35kV to 220KV, which is mainly used for measuring curent, power and energy metering, simultaneously to the relay protection device and automatic control device provide current signal.
Structure: Full sealed structure with capacitance-graded oil impregnated paper and Metal Expander
Location: indoor or outdoor
Ambient temperature:-40 to +45 centigrade (Freezing field can meet -45 centigrade)
Wind load: not exceed 35 m/s
Altitude: not exceed 3000m
Icing thickness: not exceed 10mm
Seismic strength: 8
Pollution Grade : 3 or 4
Note: If the service conditions beyonds thc above provisions, pleasc contact us and we can solve as quick as possible.

Product Description

Transformer model	LB-220W2	LBT-220W2 (W3)	LB-132W2	LB-110GYW2	LB-110W2 (W3)	LBR-110W2 (W3)	LB-123W2	LB-66W3	LB-35W2
Highest system voltage (KV)	252	252	145	126	126	126	126	126	40.5
Rated frequency (Hz)	50	50	50	50	50	50	50	50	50
Power freguency withstand voltage (KV)	460	460	275	230	230	230	230	160	95
BIL, 1.2/50μs full ware (KV)	1050	1050	650	550	550	550	550	350	185
Choppcd test (KV)	1208	1208	748	633	633	633	633	403	213
Flashover distance (mm)	≥2150	2150	1440	1440	1220	1220	1220	1220	350
Creepage distance (mm)	≥6300 (7812)	≥6300 (7812)	≥3150	≥3150	≥3150(3906)	≥3150(3906)	≥3150(3906)	≥1813(2248)	≥1015
Rated primary current (A)	2500	2500	2500	2500	2500	2500	2500	2500	2000
Rated secondary current (A)	1;5	1;5	1;5	1;5	1;5	1;5	1;5	1;5	1;5
Accuracy class (Upon request)	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P; TPY	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P
Rated  output (VA)	10-60	10-60	10-50	10-50	10-50	10-50	10-50	10-50	10-40
Instrument security factor (FS)	5;10	5;10	5;10	5;10	5;10	5;10	5;10	5;10	5;10
Rated accuracy limit factor	25	25;30;40	20	20	20	20	20	20	20
Rated short-time current/3s (max) Ith (KA)	50	50	40	40	40	40	40	40	42
Rated dynamic current (max) Idyn (KA)	125	125	100	100	100	100	100	100	105
Dimensions (mm)	900×780×3770	915×570×4123	774×600×2734	774×600×2734	714×560×2420	594×485×2550	594×485×2550	714×560×2420	440×440×1800
Mounting size (mm)	700×460	710×460	475×475	475×475	475×475	310×360	310×360	475×475	265×265
Net weight (Kg)	1310	1700	760	760	590	450	450	590	165
Gross weight (Kg)	1586	1930	880	880	670	530	530	670	200

LVB series of A.C. oil-insulated inverted current transformer

Transformcr model	LVBT-500W2	LVBT-330W2	LVBT-220W3	LVB-220W3	LVB-110W3	LVB-66W3
Highest system voltage (KV)	550	363	252	252	126	72.5
Rated frequency (Hz)	50	50	50	50	50	50
Power frequency withsland voltage (KV)	680	510	460	460	230	160
BIL, 1.2/50μs full ware (KV)	1175	950	/	/	/	/
Choppcd test (KV)	1550	1175	1050	1050	550	350
Flashover distance (mm)	3930	2675	2195	2200	1200	1200
Creepage distance (mm)	≥13750	≥11253	≥7812	≥7812	≥3906	≥2248
Rated primary current (A)	4000	4000	4000	4000	3000	3000
Rated secondary current (A)	5;1	5;1	5;1	5;1	5;1	5;1
Accuracy class (Upon request)	0.1; 0.2S; 0.5; 5P; 10P; TPY	0.1; 0.2S; 0.5; 5P; 10P; TPY	0.1; 0.2S; 0.5; 5P; 10P; TPY	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P	0.2S; 0.5; 5P; 10P
Rated  output (VA)	10-50	10-50	10-50	10-50	10-50	10-50
Instrument security factor FS	5;10	5;10	5;10	5;10	5;10	5;10
Rated accuracy limit factor	30	30	30	30	30	30
Rated Short-time current/3s (max) Ith (KA)	63	63	63	63	50	50
Rated dynamic current (max) Idyn (KA)	160	160	160	160	125	125
Dimension (mm)	1000×1200×6200	745×1127×4265	745×1060×3745	604×980×3650	535(604)  ×780(930) ×2230(2370)	535(604)  ×780(930) ×2230(2370)
Mounting size (mm)	650×650	600×600	600×600	600×600	450×450	450×450
Net weight (Kg)	2250	1000	800	500	480	480
Gross weight (Kg)	3100	1350	1070	790	550	550

Detailed Photos