聯系人:周偉
聯系電話:18856023473
聯系人:羅昀磊
聯系電話:18362263601
企業固話:0519-80986366
公司郵箱:18856023473@139.com
公司地址:江蘇省溧陽市碼頭西街618號蘇高新南大創新園B3棟
中性點接地電阻及其配套控制柜

中性點接地電阻及其配套控制柜

產品詳情

中性點接地電阻柜及其配套控制柜

Neutral Grounding Resistor and Control Cabinet

 產品描述(Product Profile)

中性點接地電阻主要用于110KV以下主要由電纜線路構成。單相接地故障電容電流較大的送配電系統及電容電流雖小但為防止諧振過電壓的電廠、廠用電系統,前者多為低阻接地而后者多為高阻接地。因此,中性點接地電阻特別適用于城市配電網、大型工業園區、電廠、海上平臺配電系統、大型化工企業等

Neutral Grounding resistors are mainly applied to the electric power system under 110KV. One is the electric power distribution system which is composed by cable lines, with big fault capacitance and current (single-phase earthing). The other is the electric power system for electric power plant whose capacitance and current are little but to avoid the resonance. The former system is mostly low-resistance earthing, and later is high-resistance earthing. Therefore, neutral Grounding resistors are especially suitable for urban electric networks, large industry garden, electric power plant, maritime electric power distribution system and large chemical enterprises, etc.

 產品特點(Product Features)

1. 使用電壓范圍:0.33 ~110KV

  2. 故障電流:1~5000A

  3. 額定阻值范圍:0.1Ω∽1500Ω

  4. 運行通流時間:5s,10s,30s,60s,10mins,連續運行

  5. 防護等級:IP20~IP55

  6. 安裝方式:戶內、戶外

  7. 可輔助安裝隔離開關、斷路器、CT、PT等

 

  8. 溫升:1)當額定時間:10s,大溫升≤760K

     2)當額定時間: 10s<t<10mins,大溫升≤610K

     3)連續工作:大溫升≤385K

    

1. Voltage range:0.33 ~110KV

2. Rated Current: 1~5000A

3. Resistance Range:0.1Ω∽1500Ω

4. Working time: 5s,10s,30s,60s,10mins,working continuous

5. Ingress Protection:IP20~IP55

6. Installation:Indoor、Outdoor

7. Auxiliary parts: disconnecting switch, circuit breaker, CT, PT etc.

8. Resistor temperature rise:  1)Rated time :10s, maximum temperature rise≤760K;  2)Rated time : 10s<t<10mins, maximum temperature rise ≤610K; 3)Working continuous, maximum temperature rise ≤385K

 接線原理圖 (Wiring diagram)

   三相交流電網中性點與大地間電氣連接的方式,稱為電網中性點接地方式。電網中性點接地電阻工作原理圖如下:

   The electrical connection mode between neutral point three-phase AC power grid and earth, called grounding mode for neutral point. Neutral point grounding resistor principle diagram as follows:

 

 

對變壓器中性點,其電阻接地有兩種方式:

 對變壓器副邊為星型接法的變壓器,中性點經電阻直接接地。(見圖一)

 對變壓器副邊為角型接法的變壓器,中性點經接地變壓器經電阻接地。(見圖二)

   Neutral point of transformer, the grounding resistor has two ways:

 On the secondary side the transformer is a star connection method, the neutral point grounding resistor straight. (see Figure.1)

 On the secondary side the transformer is a triangle connection method, the neutral point grounding transformer grounding through grounding transformer. (see Figure. 2)

 產品選型表(Product Selection Table)

Ⅰ)6.3KV系列中性點電阻柜選型表如下: 6.3KV series neutral grounding resistor selection table,as follows:

型號Type

中性點電壓

阻值

故障電流

通流時間

防護等級

外型尺寸 Enclosure

 線電壓

Line Voltage

相電壓

Phase Voltage

Resistance 

 Fault

Current

Rated

Time

Protection Class

Length

Width

High

KV

KV

[Ω]

[A]

[s]

IP

[mm]

[mm]

[mm]

TNGR

6.3

3.64

72.8

50

10

IP2X

800

1000

1180

TNGR

6.3

3.64

36.4

100

10

IP2X

800

1000

1180

TNGR

6.3

3.64

18.2

200

10

IP2X

800

1000

1180

TNGR

6.3

3.64

14.6

250

10

IP2X

800

1000

1180

TNGR

6.3

3.64

12.1

300

10

IP2X

800

1000

1180

TNGR

6.3

3.64

9.1

400

10

IP2X

1000

1000

1180

TNGR

6.3

3.64

7.3

500

10

IP2X

1000

1000

1180

TNGR

6.3

3.64

6.1

600

10

IP2X

1000

1000

1180

TNGR

6.3

3.64

4.6

800

10

IP2X

1000

1000

1180

TNGR

6.3

3.64

3.6

1000

10

IP2X

1000

1000

1180

TNGR

6.3

3.64

3.0

1200

10

IP2X

1000

1000

1180

TNGR

6.3

3.64

2.6

1400

10

IP2X

1000

1000

1180

TNGR

6.3

3.64

2.3

1600

10

IP2X

1000

1000

1180

Ⅱ)10.5KV系列中性點電阻柜選型表如下: 10.5KV series neutral grounding resistor selection table,as follows:

型號

Type

中性點電壓

阻值

故障電流

通流時間

防護等級

外型尺寸 Enclosure

 線電壓

Line Voltage

相電壓

Phase Voltage

Resistance Value

 Fault

Current

Rated

Time

Protection

Length

Width

High

KV

KV

[Ω]

[A]

[s]

IP

[mm]

[mm]

[mm]

TNGR

10.5

6.06

121.2

50

10

IP2X

800

1000

1480

TNGR

10.5

6.06

60.6

100

10

IP2X

800

1000

1480

TNGR

10.5

6.06

30.3

200

10

IP2X

800

1000

1480

TNGR

10.5

6.06

24.3

250

10

IP2X

800

1000

1480

TNGR

10.5

6.06

20.2

300

10

IP2X

800

1000

1480

TNGR

10.5

6.06

15.2

400

10

IP2X

1000

1000

1480

TNGR

10.5

6.06

12.2

500

10

IP2X

1000

1000

1480

TNGR

10.5

6.06

10.1

600

10

IP2X

1000

1000

1480

TNGR

10.5

6.06

7.6

800

10

IP2X

1200

1000

1480

TNGR

10.5

6.06

6.1

1000

10

IP2X

1200

1000

1480

TNGR

10.5

6.06

5.1

1200

10

IP2X

1200

1000

1480

TNGR

10.5

6.06

4.3

1400

10

IP2X

1200

1000

1480

TNGR

10.5

6.06

3.8

1600

10

IP2X

1200

1000

1880

TNGR

10.5

6.06

3.4

1800

10

IP2X

1200

1000

1880


Ⅲ)20KV系列中性點電阻柜選型表如下: 20KV series neutral grounding resistor selection table,as follows:

型號

Type

中性點電壓

阻值

故障電流

通流時間

防護等級

外型尺寸Enclosure

 線電壓

Line Voltage

相電壓

Phase Voltage

Resistance Value

 Fault

 Current

Rated

Time

Protection

Length

Width

High

KV

KV

[Ω]

[A]

[s]

IP

[mm]

[mm]

[mm]

TNGR

20

11.55

231

50

10

IP2X

1300

2300

2300

TNGR

20

11.55

115.5

100

10

IP2X

1300

2300

2300

TNGR

20

11.55

57.7

200

10

IP2X

1300

2500

2300

TNGR

20

11.55

46.2

250

10

IP2X

1300

2700

2300

TNGR

20

11.55

38.5

300

10

IP2X

1300

2700

2300

TNGR

20

11.55

28.9

400

10

IP2X

1300

2500

2300

TNGR

20

11.55

23.1

500

10

IP2X

1300

2500

2300

TNGR

20

11.55

19.3

600

10

IP2X

1300

2700

2300

TNGR

20

11.55

14.4

800

10

IP2X

2100

2500

2000

TNGR

20

11.55

11.6

1000

10

IP2X

2100

2500

2000

TNGR

20

11.55

9.6

1200

10

IP2X

2100

2500

2000

TNGR

20

11.55

8.3

1400

10

IP2X

2100

2500

2000

TNGR

20

11.55

7.2

1600

10

IP2X

2100

2700

2000

TNGR

20

11.55

6.4

1800

10

IP2X

2100

2700

2000

TNGR

20

11.55

5.8

2000

10

IP2X

2100

2700

2000

Ⅳ)35KV系列中性點電阻柜選型表如下: 35KV series neutral grounding resistor selection table,as follows:

型號

Type

中性點電壓

阻值

故障電流

通流時間

防護等級

外型尺寸Enclosure

 線電壓

Line Voltage

相電壓

Phase Voltage

Resistance Value

 Fault

 Current

Rated

Time

Protection

Length

Width

High

KV

KV

[Ω]

[A]

[s]

IP

[mm]

[mm]

[mm]

TNGR

35

20.2

404.6

50

10

IP2X

1600

2600

2524

TNGR

35

20.2

202.3

100

10

IP2X

1600

2600

2524

TNGR

35

20.2

101.2

200

10

IP2X

1600

2800

2524

TNGR

35

20.2

80.9

250

10

IP2X

1600

3000

2524

TNGR

35

20.2

67.4

300

10

IP2X

1600

3000

2524

TNGR

35

20.2

50.6

400

10

IP2X

1600

2800

2524

TNGR

35

20.2

40.5

500

10

IP2X

1600

2800

2524

TNGR

35

20.2

33.7

600

10

IP2X

1600

3000

2524

TNGR

35

20.2

25.3

800

10

IP2X

2400

2800

2144

TNGR

35

20.2

20.2

1000

10

IP2X

2400

2800

2144

TNGR

35

20.2

16.9

1200

10

IP2X

2400

2800

2144

TNGR

35

20.2

14.5

1400

10

IP2X

2400

2800

2144

TNGR

35

20.2

12.6

1600

10

IP2X

2400

3000

2144

TNGR

35

20.2

11.2

1800

10

IP2X

2400

3000

2144

TNGR

35

20.2

10.1

2000

10

IP2X

2400

3000

2524

注: 由于品種規格多,更多規格請詢問本公司業務人員。

Remark: For other technical parameters & requirements, please contact with our company's business

 

以上電阻采用不銹鋼電阻片,CT可選(若帶接地變、真空接觸器、隔離開關設備,通流時間>10S時,箱體尺寸需另外調整)

 Stainless steel resistors ,CT is optional(if other equipment like grounding transformer, isolating switch, vacuum contactor and the rated time >10S,the enclosure dimensions will be adjusted )


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