On-load tap changers type VUCL

The VUC types of on-load tap changers come in various models with ratings suitable for most applications. They are mounted inside the transformer tank and suspended from the transformer cover. The VUC types operate with arc quenching in vacuum interrupters.

The VUC types complete the UC family of tap changers with their excellent service record since the 1960s.

The VUCL is the largest of the VUC types and is suitable for transformers up to 2300 MVA with a BIL rating of 1175 kV and a current rating of 1600 A when placed in the neutral point of the winding.

Product scope

Base technology: Vacuum, resistance, in-tank, diverter switch
Common applications: Network, special, industrial, HVDC

	Tap-changer placed in the neutral point of the winding	Other placements of the tap-changer
Highest voltage for equipment (Um)	362 kV	362 kV
Max lightning impulse (BIL)	1175 kV	1175 kV
Max current 3-phase 1-phase (one tap-changer/phase)	1600 A 2400 A	N/A 2400 A
Enforced current splitting 1-phase (one tap-changer/phase)	2600 A	2600 A
Max step voltage	6000 V	6000 V

Why Hitachi Energy?

Plug-and-play interchangeability with traditional type UCL only requires diverter switch replacement
Unique design with redundant switching capacity in the auxiliary contact system
Maintenance in any tap position and without dismantling the shaft system, thus eliminating the risk of failure from improper assembly or alignment
Possible to use alternative insulating fluids

Get to know more

Document title	ID
Technical guide	1ZSC000562-AAX
Declaration of conformity	1ZSC000498-ABN
Ordering data form (.xls format) Please note that this is an interactive form, which can be filled in, saved, and sent to us by e-mail.	1ZSC000498-ACC
Installation and commissioning guide	1ZSC000562-AAZ
User's manual	1ZSC000562-ABE
(V)UC Transport cover for yoke mounted tap-changers - Product information	1ZSC000562-ADN
Accessories and protection devices	1ZSC000562-AAD
Oil filter unit, type HPS 27/27, 54	1ZSC000562-AAF
Oil filter unit, type OLU	1ZSC000562-AAR

Insulating level (kV)	Selector	Switching type	Connection	Max. rated through-current (A)	Number of positions	Drawing number
380 650 750 1050 1175 ³⁾	III	L	N	700-1000	5-22	1ZSC004517-AAF
			E, T, B1 ¹⁾			1ZSC004517-AAC
			B2 ¹⁾			1ZSC004517-AAJ
			E, T	1300, 1500, 1800		1ZSC004517-AAX
				2400		1ZSC004517-ABJ
				2 x 700, 2 x 1000 ²⁾		1ZSC004517-ABK
		R, D	N	700-1000	9, 13	1ZSC004517-AAM
			N		11, 15-35	1ZSC004517-AAB
			E, T, B1 ¹⁾		9, 13	1ZSC004517-ABS
			E, T, B1 ¹⁾		11, 15-35	1ZSC004517-ABR
			B2 ¹⁾		9, 13	1ZSC004517-AAU
			B2 ¹⁾		11, 15-35	1ZSC004517-AAT
			E, T	1300, 1500, 1800	9, 13	1ZSC004517-AAY
				1300, 1500, 1800	11, 15-35	1ZSC004517-AAZ
				2400	9, 13	1ZSC004517-ABL
				2400	11, 15-35	1ZSC004517-ABM
				2x700, 2x1000 ²⁾	9, 13	1ZSC004517-ABN
				2x700, 2x1000 ²⁾	11, 15-35	1ZSC004517-ABP
B1 (1 phase) and B2 (2 phases) are combined components, forming the "B-group". Enforced current splitting. Same as 1050, but with different shielding rings. Models are available on request.

Insulating level (kV)	Selector	Switching type	Connection	Max. rated through-current (A)	Number of positions	Drawing number
380 650 750 1050	F	L	N	700, 1000, 1300, 1500, 1600	5-18	1ZSC026120-ABE
			E, T, B1 ¹⁾	700, 1000, 1300, 1500, 1600		1ZSC026120-ABF
			B2 ¹⁾	700, 1000, 1300, 1500, 1600		1ZSC026120-ABH
			E, T	700, 1000, 1300, 1500, 1800		1ZSC026120-ACD
				2400		1ZSC026120-ACE
				2x700, 2x1000, 2x1300, 2x1500, 2x1600		1ZSC026120-ACF
		R, D	N	700, 1000, 1300, 1500, 1600	8-9, 12-13	1ZSC026120-ABJ
			N	700, 1000, 1300, 1500, 1600	10-11, 14-35	1ZSC026120-ABK
			E, T, B1 ¹⁾	700, 1000, 1300, 1500, 1600	8-9, 12-13	1ZSC026120-ABL
			E, T, B1 ¹⁾	700, 1000, 1300, 1500, 1600	10-11, 14-35	1ZSC026120-ABM
			B2 ¹⁾	700, 1000, 1300, 1500, 1600	8-9, 12-13	1ZSC026120-ABR
			B2 ¹⁾	700, 1000, 1300, 1500, 1600	10-11, 14-35	1ZSC026120-ABS
			E, T	700, 1000, 1300, 1500, 1800	8-9, 12-13	1ZSC026120-ACG
				700, 1000, 1300, 1500, 1800	10-11, 14-35	1ZSC026120-ACH
				2400 ^E)	8-9, 12-13	1ZSC026120-ACJ
				2400 ^E)	10-11, 14-35	1ZSC026120-ACK
				2x700, 2x 000, 2x1300, 2x1500, 2x1600 ²⁾	8-9, 12-13	1ZSC026120-ABR
				2x700, 2x 000, 2x1300, 2x1500, 2x1600 ²⁾	10-11, 14-35	1ZSC026120-ABS
B1 (1 phase) and B2 (2 phases) are combined components, forming the "B-group". 2*1300: current splitting

The drawing shows	Drawing number
Mounting on active part	5492 0086-1
Top section accessories, cover, and active part mounting	1ZSC027626-AAA
Drain valve	5492 0083-10
Pressure relief device - flow diameter 130 mm - Qualitrol	5492 0083-15
Pressure relief device - flow diameter 50 mm, standard - Comem	1ZSC003721-AAW
Pressure relief device - flow diameter 50 mm, class C5-M - Comem	1ZSC003721-AAV
Bevel gear (on top section, T-shape)	5492 0083-19
Bevel gear (on top section, L-shape)	1ZSC004021-AAD
Bevel gear (in external drive shaft system)	5492 0083-1
Support for bevel gear (on external drive shaft system)	5492 999-11
Pressure relay	5492 0083-2
Oil flow relay	1ZSC003527-ABB
External drive shaft system	5492 0083-4
Temperature relay	1ZSC003716-AAM
Temperature sensor	1ZSC005333-AAF
Temperature sensor and pressure relay	5492 0083-33
Thermo switch housing	5492 0083-22

Number of positions	Max. number of turns	Min. number of turns
5	5492 0367-11	5492 0370-11
6	5492 0367-12	5492 0370-12
7	5492 0367-13	5492 0370-13
8	5492 0367-14	5492 0370-14
9	5492 0367-1	5492 0370-1
10	5492 0367-2	5492 0370-2
11	5492 0367-3	5492 0370-3
12	5492 0367-4	5492 0370-4
13	5492 0367-5	5492 0370-5
14	5492 0367-6	5492 0370-6
15	5492 0367-7	5492 0370-7
16	5492 0367-8	5492 0370-8
17	5492 0367-9	5492 0370-9
18	5492 0367-10	5492 0370-10
19	5492 0367-15	5492 0370-15
20	5492 0367-16	5492 0370-16
21	5492 0367-17	5492 0370-17
22	5492 0367-18	5492 0370-18

Number of positions	Max. number of turns	Min. number of turns
9	5492 0368-1	5492 0371-1
11	5492 0368-2	5492 0371-2
13	5492 0368-3	5492 0371-3
15	5492 0368-4	5492 0371-4
17	5492 0368-5	5492 0371-5
19	5492 0368-6	5492 0371-6
21	5492 0368-7	5492 0371-7
23	5492 0368-8	5492 0371-8
25	5492 0368-9	5492 0371-9
27	5492 0368-10	5492 0371-10
29	5492 0368-11	5492 0371-11
31	5492 0368-12	5492 0371-12
33	5492 0368-13	5492 0371-13
35	5492 0368-14	5492 0371-14

Number of positions	Max. number of turns	Min. number of turns
9	5492 0369-1	5492 0372-1
11	5492 0369-2	5492 0372-2
13	5492 0369-3	5492 0372-3
15	5492 0369-4	5492 0372-4
17	5492 0369-5	5492 0372-5
19	5492 0369-6	5492 0372-6
21	5492 0369-7	5492 0372-7
23	5492 0369-8	5492 0372-8
25	5492 0369-9	5492 0372-9
27	5492 0369-10	5492 0372-10
29	5492 0369-11	5492 0372-11
31	5492 0369-12	5492 0372-12
33	5492 0369-13	5492 0372-13
35	5492 0369-14	5492 0372-14

Number of positions	Max. number of turns	Min. number of turns
5	1ZSC004307-AAA	1ZSC004308-AAA
6	1ZSC004307-AAB	1ZSC004308-AAB
7	1ZSC004307-AAC	1ZSC004308-AAC
8	1ZSC004307-AAD	1ZSC004308-AAD
9	1ZSC004307-AAE	1ZSC004308-AAE
10	1ZSC004307-AAF	1ZSC004308-AAF
11	1ZSC004307-AAG	1ZSC004308-AAG
12	1ZSC004307-AAH	1ZSC004308-AAH
13	1ZSC004307-AAJ	1ZSC004308-AAJ
14	1ZSC004307-AAK	1ZSC004308-AAK
15	1ZSC004307-AAL	1ZSC004308-AAL
16	1ZSC004307-AAM	1ZSC004308-AAM
17	1ZSC004307-AAN	1ZSC004308-AAN
18	1ZSC004307-AAP	1ZSC004308-AAP

Number of positions	Max. number of turns	Min. number of turns
9	1ZSC004309-AAA	1ZSC004310-AAA
11	1ZSC004309-AAB	1ZSC004310-AAB
13	1ZSC004309-AAC	1ZSC004310-AAC
15	1ZSC004309-AAD	1ZSC004310-AAD
17	1ZSC004309-AAE	1ZSC004310-AAE
19	1ZSC004309-AAF	1ZSC004310-AAF
21	1ZSC004309-AAG	1ZSC004310-AAG
23	1ZSC004309-AAH	1ZSC004310-AAH
25	1ZSC004309-AAJ	1ZSC004310-AAJ
27	1ZSC004309-AAK	1ZSC004310-AAK
29	1ZSC004309-AAL	1ZSC004310-AAL
31	1ZSC004309-AAM	1ZSC004310-AAM
33	1ZSC004309-AAN	1ZSC004310-AAN
35	1ZSC004309-AAP	1ZSC004310-AAP

Number of positions	Max. number of turns	Min. number of turns
9	1ZSC004311-AAA	1ZSC004312-AAA
11	1ZSC004311-AAB	1ZSC004312-AAB
13	1ZSC004311-AAC	1ZSC004312-AAC
15	1ZSC004311-AAD	1ZSC004312-AAD
17	1ZSC004311-AAE	1ZSC004312-AAE
19	1ZSC004311-AAF	1ZSC004312-AAF
21	1ZSC004311-AAG	1ZSC004312-AAG
23	1ZSC004311-AAH	1ZSC004312-AAH
25	1ZSC004311-AAJ	1ZSC004312-AAJ
27	1ZSC004311-AAK	1ZSC004312-AAK
29	1ZSC004311-AAL	1ZSC004312-AAL
31	1ZSC004311-AAM	1ZSC004312-AAM
33	1ZSC004311-AAN	1ZSC004312-AAN
35	1ZSC004311-AAP	1ZSC004312-AAP

Vacuum on-load tap-changers

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Catalogs and instructions

Dimension drawings type VUCL../III

Dimension drawings type VUCL../F

Additional dimension drawings

Connection diagrams type VUCLL./III

Connection diagrams type VUCLR./III

Connection diagrams type VUCLD./III

Connection diagrams type VUCLL./F

Connection diagrams type VUCLR./F

Connection diagrams type VUCLD./F

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Vacuum on-load tap-changers

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