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Metal oxide resistor sheet

Metal oxide resistor sheet is the core component of lightning arrester, our company adopts the latest research and development of raw material formula and production process, the production of metal oxide resistor sheet is divided into three series: AC resistor sheet, DC resistor sheet, high gradient resistor sheet, compared with other domestic products have five characteristics:

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Metal oxide resistor sheet

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86-377-61160266

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1) Large flow capacity: 4/10μs large current impact tolerance, 2ms square wave flow capacity, line discharge level and other indicators have reached the international advanced level.

2) Excellent aging resistance: After the aging test of the corresponding charge rate at 115 ℃ and 1000h, the aging coefficient is less than 0.9, and the aging characteristics reach the international leading level.

3) Excellent protection characteristics: the residual voltage ratio of various specifications of the resistor under the corresponding standard current impact has reached the domestic leading level.

4) Good uniformity: The uniformity indexes of parameters such as DC 1mA reference voltage and residual voltage ratio of the resistor sheets of various specifications have reached the leading level in China.

5) The high gradient resistor sheet successfully developed by our company has been put into mass production in our company. The potential gradient of the high gradient resistor sheet can reach 300-400 V/mm.

Table 1: Technical parameters of AC metal oxide resistor

Specifications Type	Dimensions (mm) Dimension			DC 1mA Reference voltage (kV) DC 1mA reference voltage	0.75U1mA lower leakage current （µA) Leakage current under 0.75U1mA	8/20µs nominal 雷电冲击电流（kA) 8/20μs nominal lightning impulse current	Lightning impulse residual voltage ratio ≤ Ratio of residual voltage at a lightning impulse	flow capacity Discharge current capacity
Specifications Type	Outer diameter Outside diameter	Inner diameter Inside diameter	Height Height	DC 1mA Reference voltage (kV) DC 1mA reference voltage				4/10µs high current 冲击耐受（kA) 4/10μs high current impulse withstand	2ms square wave current impulse withstand (A) 2ms rectangular impulse current withstand
Φ32 × 25	32±0.5		25±0.5	5.0-5.7	≤ 10	5	1.79	40	150
Φ32 × 30	32±0.5		30±0.5	6.0-6.9	≤ 10	5	1.79	40	150
Φ35 × 25	35±0.5		25±0.5	5.0-5.7	≤ 10	5	1.7	65	250
Φ35 × 30	35±0.5		30±0.5	6.3-6.9	≤ 10	5	1.7	65	250
Φ42 × 25	42±0.5		25±0.5	5.0-5.7	≤ 15	5	1.7	100	400
Φ42 × 30	42±0.5		30±0.5	6.3-6.9	≤ 15	5	1.7	100	400
Φ45 × 25	45±0.5		25±0.5	5.0-5.7	≤ 20	5	1.68	100	500
Φ45 × 30	45±0.5		30±0.5	6.3-6.9	≤ 20	5	1.68	100	500
Φ52 × 25	52±0.5		25±0.5	5.0-5.7	≤ 20	10	1.73	100	600
Φ52 × 30	52±0.5		30±0.5	6.3-6.9	≤ 20	10	1.73	100	600
Φ60 × 22	60±0.5		22±0.5	4.4-5.1	≤ 20	10	1.71	100	800
Φ60 × 30	60±0.5		30±0.5	6.3-6.9	≤ 20	10	1.71	100	800
Φ71 × 22	71±0.5		22±0.5	4.4-5.1	≤ 20	10	1.67	100	1200
Φ71 × 22	71±0.5	26±0.5	22±0.5	4.4-5.1	≤ 20	10	1.72	100	1000
Φ75 × 22	75±0.5		22±0.5	4.4-5.1	≤ 20	10	1.65	100	1400
Φ85 × 22	85±0.5		22±0.5	4.4-5.1	≤ 20	10	1.63	100	1800
Φ85 × 22	85±0.5	26±0.5	22±0.5	4.4-5.1	≤ 20	10	1.65	100	1500
Φ115 × 22	115±0.5	42±0.5	22±0.5	4.4-5.1	≤ 30	20	1.66	100	2200
Φ128 × 22	128±0.5	42±0.5	22±0.5	4.4-5.1	≤ 30	20	1.7	100	3000

The miniaturized tank arrester designed and produced by our company adopts the high gradient zinc oxide varistor sheet with independent intellectual property rights:

1. Gradient range: 300-400 V/mm

The reduction of the residual pressure of the simultaneous operating wave and the steep wave is particularly beneficial to the protection of GIS equipment.

3. The resistance sheet has good aging performance and aging coefficient kct<0.9 (artificial accelerated aging test with 115 ℃, 1000h and 90% charge rate)

Table 2: Technical parameters of high gradient metal oxide resistor

Specification Type	Dimensions (mm) Dimension			DC 1mA Reference voltage (kV) DC 1mA reference voltage	0.75U1mA lower leakage current （µA) Leakage current under 0.75U1mA	8/20µs nominal Lightning impulse current (kA) 8/20μs nominal lightning impulse current	Lightning impulse residual voltage ratio ≤ Ratio of residual voltage at a lightning impulse	flow capacity Discharge current capacity
Specification Type	Outer diameter Outside diameter	内径Inside diameter	Height Height	DC 1mA Reference voltage (kV) DC 1mA reference voltage				4/10µs high current Impact tolerance (kA) 4/10μs high current impulse withstand	2ms square wave current impulse withstand (A) 2ms rectangular impulse current withstand
Φ60 × 22	60±0.5		22±0.5	6.6-8.8	≤ 20	10	1.69	100	600
Φ71 × 22	71±0.5		22±0.5	6.6-8.8	≤ 20	10	1.65	100	800
Φ75 × 22	75±0.5		22±0.5	6.6-8.8	≤ 20	10	1.67	100	1000
Φ128 × 22	128±0.5		22±0.5	6.6-8.8	≤ 30	20	1.64	100	2200

Table 3: Technical parameters of DC metal oxide resistor

Specifications Type	尺寸（mm) Dimension			DC 1mA Reference voltage (kV) DC 1mA reference voltage	0.75U1mA lower leakage current （µA) Leakage current under 0.75U1mA	8/20µs nominal Lightning impulse current (kA) 8/20μs nominal lightning impulse current	Lightning impulse residual voltage ratio ≤ Ratio of residual voltage at a lightning impulse	flow capacity Discharge current capacity
Specifications Type	Outer diameter Outside diameter	内径Inside diameter	Height Height	DC 1mA Reference voltage (kV) DC 1mA reference voltage				4/10µs high current Impact tolerance (kA) 4/10μs high current impulse withstand	2ms square wave Flow shock tolerance (A) 2ms rectangular impulse current withstand
Φ52 × 25	52±0.5		25±0.5	5.0-5.7	≤ 20	10	1.73	100	600
Φ60 × 22	60±0.5		22±0.5	4.4-5.1	≤ 20	10	1.71	100	800
Φ71 × 22	71±0.5		22±0.5	4.4-5.1	≤ 20	20	1.78	100	1200
Φ75 × 22	75±0.5		22±0.5	4.4-5.1	≤ 20	20	1.76	100	1400
Φ85 × 22	85±0.5		22±0.5	4.4-5.1	≤ 20	20	1.75	100	1800
Φ105 × 22	105±0.5		22±0.5	4.4-5.1	≤ 30	20	1.68	100	2200