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PVI

G&WPVI環網柜包含了負荷開關和斷路器的能力。斷路器提供有電子控制,完好的密封,過電流保護,故障保護設備。PVI可提供單相和三相的跳斷功能,本環網柜設計用于三相系統,最高點壓值38kV, 630A額定工作電流,以及12.5Ka或20Ka故障跳斷值。PNI環網柜是G&W一款結構多變的開關,它可以是前部套管接入(前入式),也可以前后都有套管接入,以及空氣絕緣開關的安裝方式。

本環網柜按標準IEEE C37.72, C37.74, 和C37.60為負荷開關和斷路器設定能力。外箱柜的設計和測試標準為IEEE C57.12.28 和C57.12.29。

 

 

特點

·           箱柜安裝

·         前部套管接入和前部操作(前端接入)

·         可替換為空氣絕緣開關的安裝方式

·         15.5kV -38kV及 40kA非對稱負荷峰值耐受電流以及故障關合電流。

·         630A額定工作電流。

·         12.5KA和20kA跳斷額定電流。完全按IEEE C37.60標準測試

 

空氣絕緣開關的安裝方式

 

PVI ratings

Maximum design voltage

15.5 kV

27 kV

38 kV

Voltage class

15 kV

25 kV

35 kV

Impulse level (BIL)

110 kV

125 kV

150 kV

One minute withstand

35 AC kV

60 AC kV

70 AC kV

One minute withstand, production test rating

34 AC kV

40 AC kV

50 AC kV

15 minute withstand

53 DC kV

78 DC kV

103 AC kV

Continuous and load break current

630 Amps

630 Amps

630 AC kV

Load Break Switch Momentary current

40 kA asym

40 kA asym

40 kA asym

Load Break Switch Fault close current, (3 times)

40 kA asym

40 kA asym

40 kA asym

Load Break Switch One second current

25 kA sym

25 kA sym

25 kA sym

Symmetrical interrupting rating

12kA*

12kA*

12kA*

Load Break Switch Open gap withstand

200 kV

200 kV

200 kV

Load Break Switch 10 operation overload interrupting capability

3000 Amps

3000 Amps

3000 Amps

Load Break Switch Operations load interrupting at 600A

1200 Amps

1200 Amps

1200 Amps

Mechanical endurance, operations

2000 Amps

2000 Amps

2000 Amps

IEEE C37.60

Fault Interrupting Duty

Total number of fault interruptions: 116

Percent of Maximum Interrupting Rating

No. of Fault Interruptions

15 – 20%

44

45 – 55%

56

90 – 100%

16

*20kA sym also available. 

 

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