Meidensha Zinc Oxide Blocks For Various Surge Arresters

Manufacturer: Meidensha Corporation

Features

IEC / IEEE (ANSI) compliant
Available for special applications
Under oil for protection of transformer windings
For direct current (DC)
Under gas (SF6, etc) for GIS with high gradient blocks (V1mA=400V/mm)
Long life
Excellent non-linear characteristics
High discharge current capability
Compact in size
A wide range of products to meet various applications

Applications and Solutions

Arresters for power stations, substations and power distribution networks
Pole-mounted transformer built-in type arresters (for oil immersion)
Railway arresters (for DC substation and rail vehicles)
Gas insulated metal enclosed surge arresters
Transmission line arresters
Arresters for capacitor protection

Specifications

Major Ratings (standard type)
Application for IEC standard	Recommended Ur (kVrms)	Dimensions(mm)
Application for IEC standard	Recommended Ur (kVrms)	Diameter	Height
5kA Distribution	3.0	32	20
	4.5		30
	6.0		40
10kA Distribution & Class1	3.0	42	20
	4.5		30
	6.0		40
10kA Class2	1.5	48	11
	3.0		22
	6.0		45
10kA Class3	1.5	64	11
	3.0		23
	6.0		45
20kA Class4	1.5	74	11
	3.0		23
	6.0		45
20kA Class5	3.0	100	23

ZnO blocks for Distribution class surge arresters

Model	Rated voltage (kV)	Arrester classification	Dimensions		Range of critical operating voltage [V1mAdc]	Max. residual voltage ratio at 8/20 μs [VxkA/V1mAdc]					Current withstand capability
			Diameter (mm)	Height (mm)		2.5kA	5kA	10kA	20kA	40kA	4/10μs (kA)	2ms (A)	Qrs (C)
ZE32GE20A	3.0	DM	31.5 ± 1.0	19.5 ± 1.0	4.55 ~ 5.40	1.65	1.78	1.96	2.19	–	65	100	0.2
ZE32GE30A	4.5	DM	31.5 ± 1.0	29.5 ± 1.0	6.80 ~ 8.10	1.65	1.78	1.96	2.19	–	65	100	0.2
ZE32GE40A	6.0	DM	31.5 ± 1.0	39.5 ± 1.0	9.10 ~ 10.80	1.65	1.78	1.96	2.19	–	65	100	0.2
ZE36GE20B	3.0	DH	36.0 ± 1.0	19.5 ± 1.0	3.82 ~ 4.43	1.60	1.72	1.89	2.12	–	100	250	0.4
ZE36GE27B	4.5	DH	36.0 ± 1.0	26.5 ± 1.0	5.74 ~ 6.63	1.60	1.72	1.89	2.12	–	100	250	0.4
ZE36GE36B	6.0	DH	36.0 ± 1.0	35.5 ± 1.0	7.65 ~ 8.83	1.60	1.72	1.89	2.12	–	100	250	0.4

ZnO blocks for Station class surge arresters

Model	Rated voltage (kV)	Arrester classification	Dimensions		Range of critical operating voltage [V1mAdc]	Max. residual voltage ratio at 8/20 μs [VxkA/V1mAdc]					Current withstand capability
			Diameter (mm)	Height (mm)		2.5kA	5kA	10kA	20kA	40kA	4/10μs (kA)	2ms (A)	Qrs (C)
ZE42GE20B	3.0	SL	42.0 ± 1.0	19.5 ± 1.0	4.10 ~ 4.70	1.54	1.64	1.78	1.97	2.22	100	500	1.2
ZE42GE27B	4.5	SL	42.0 ± 1.0	26.5 ± 1.0	6.15 ~ 7.07	1.54	1.64	1.78	1.97	2.22	100	500	1.2
ZE42GE36B	6.0	SL	42.0 ± 1.0	35.5 ± 1.0	8.20 ~ 9.40	1.54	1.64	1.78	1.97	2.22	100	500	1.2

ZnO blocks for Station class surge arresters

Model	Rated voltage (kV)	Arrester classification	Dimensions		Range of critical operating voltage [V1mAdc]	Max. residual voltage ratio at 8/20 μs [VxkA/V1mAdc]					Current withstand capability
			Diameter (mm)	Height (mm)		2.5kA	5kA	10kA	20kA	40kA	4/10μs (kA)	2ms (A)	Qrs (C)
MZE48A22	3.0	SL	48.5 ± 1.0	22.0 ± 1.0	4.18~4.82	1.56	1.66	1.79	1.97	2.19	100	500	1.2
MZE48A44	6.0	SL	48.5 ± 1.0	44.0 ± 1.0	8.42~9.58	1.56	1.66	1.79	1.97	2.19	100	500	1.2
MZE48B23	3.0	SM	48.5 ± 1.0	22.5 ± 1.0	4.18~4.82	1.54	1.62	1.74	1.89	2.08	100	800	1.6
MZE48B45	6.0	SM	48.5 ± 1.0	44.5 ± 1.0	8.42~9.58	1.54	1.62	1.74	1.89	2.08	100	800	1.6
MZE57B23	3.2	SM	57.0 ± 1.0	22.5 ± 1.0	4.75~5.41	1.51	1.59	1.69	1.83	2.00	100	800	1.6
MZE64A23	3.0	SM	64.5 ± 1.0	22.5 ± 1.0	4.18~4.82	1.51	1.59	1.69	1.83	2.00	100	1000	2.0
MZE64A45	6.0	SM	64.5 ± 1.0	44.5 ± 1.0	8.42~9.58	1.51	1.59	1.69	1.83	2.00	100	1000	2.0
MZE74A23	3.0	SH	74.0 ± 1.0	22.5 ± 1.0	4.18~4.82	1.50	1.57	1.66	1.78	1.94	100	1300	2.6
MZE100A23	3.0	SH	100.0 ± 2.0	22.5 ± 1.0	4.18~4.82	1.48	1.54	1.62	1.72	1.86	100	2000	4.0
MZE100B23	3.0	SH	100.0 ± 2.0	22.5 ± 1.0	4.18~4.82	1.43	1.49	1.57	1.68	1.81	100	2600	4.4

ZnO blocks for DC surge arresters

Model	Rated voltage (kV)	Arrester classification	Dimensions		Range of critical operating voltage [V1mAdc]	Max. residual voltage ratio at 8/20 μs [VxkA/V1mAdc]					Current withstand capability
			Diameter (mm)	Height (mm)		2.5kA	5kA	10kA	20kA	40kA	4/10μs (kA)	2ms (A)	Qrs (C)
MZE74A7D	1.0	–	7.0 ± 1.0	7.0 ± 1.0	1.35~1.50	1.50	1.57	1.66	1.78	1.94	100	1300	2.6
MZE74A11D	1.5	–	7.0 ± 1.0	11.5 ± 1.0	2.15~2.45	1.50	1.57	1.66	1.78	1.94	100	1300	2.6
MZE74A15D	2.0	–	7.0 ± 1.0	14.5 ± 1.0	2.65~2.98	1.50	1.57	1.66	1.78	1.94	100	1300	2.6
MZE74A23D	3.0	–	7.0 ± 1.0	22.5 ± 1.0	4.28~4.72	1.50	1.57	1.66	1.78	1.94	100	1300	2.6
MZE100A23D	3.0	–	100.0 ± 2.0	22.5 ± 1.0	4.28~4.72	1.48	1.54	1.62	1.72	1.86	100	2000	4.0

ZnO blocks for GIS type surge arresters

Model	Rated voltage (kV)	Arrester classification	Dimensions		Range of critical operating voltage [V1mAdc]	Max. residual voltage ratio at 8/20 μs [VxkA/V1mAdc]					Current withstand capability
			Diameter (mm)	Height (mm)		2.5kA	5kA	10kA	20kA	40kA	4/10μs (kA)	2ms (A)	Qrs (C)
MZE64AF23	5.6	SM	64.5 ± 1.0	22.5 ± 1.0	8.10~8.90	1.51	1.59	1.69	1.83	2.00	100	800	1.6
MZE74AF23	5.6	SM	74.0 ± 1.0	22.5 ± 1.0	8.10~8.90	1.50	1.57	1.66	1.78	1.94	100	1000	2.0
MZE100AF23	5.6	SH	100.0 ± 2.0	22.5 ± 1.0	7.60~8.40	1.48	1.54	1.62	1.73	1.87	100	1400	2.8

Oil-immersed type ZnO blocks (to be used in Transformer insulation oil)

Model	Rated voltage (kV)	Arrester classification	Dimensions		Range of critical operating voltage [V1mAdc]	Max. residual voltage ratio at 8/20 μs [VxkA/V1mAdc]					Current withstand capability
			Diameter (mm)	Height (mm)		2.5kA	5kA	10kA	20kA	40kA	4/10μs (kA)	2ms (A)	Qrs (C)
ZE32G30	3.9	DM	31.5 ± 1.0	29.0 ± 1.0	5.60~6.60	1.65	1.78	1.96	2.19	–	50	150	0.3
ZE32GB33	5.6	DM	32.0 ± 1.0	32.7 ± 0.7	8.02~9.18	1.63	1.76	1.94	2.19	–	65	100	0.2
ZE64G23	3.0	SM	64.5 ± 1.0	22.5 ± 1.0	4.28~4.42	1.51	1.59	1.69	1.83	2.00	100	1000	2.0