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PNI – Load Break Switching & Fault Interrupting

PNI - Load Break Switching & Fault Interrupting

G&W Electric model PNI padmount switches include load break and fault interrupting capability. The fault interrupters provide electronically controlled, resettable over current protection in a totally sealed, dead front device. The switches are designed for use on 3-phase systems with voltages up to 38kV, 900A load break, and continuous current, with 12.5kA – 25kA symmetrical fault interrupting ratings. The PNI is one of G&W Electric’s most versatile switch style because it can be ordered with front accessible switch operators and bushings (front access) as well as front accessible switch operators with rear entry bushings (front/ rear access).

The switches are designed to IEEE C37.72, C37.74, and C37.60 for load break and fault interrupting capability. Padmount enclosures are designed and tested to IEEE C57.12.28 and C57.12.29.

Features and Benefits

  • Construction – Available compact construction with front accessible switch operators and bushings. Vault construction is also available with top or bottom bushings or top access to operators and bushings.
  • Visible Break – Load break ways are equipped with visible break to view the open and closed positions.
  • Fault Interrupting – Three phase fault interrupting up to 12.5kA with selectable industry curves including fuse emulation curves.
  • Voltage Sensing – Load break ways are available with integral voltage sensing for use with voltage indication panel to determine in-phase condition or for use with a relay with up to 1% accuracy.
  • Seismically Certified – The switches are available for order designed per the guidelines of ASCE (American Society of Civil Engineers) standard 7-05 Chapter 13. These guidelines cover the design of non structural components installed in a building. The switches also underwent a test regime specified by ICC-ES-AC-156 (International Code Council Evaluation Services Acceptance Criteria) which specifies the shaker table test inputs applied to the switches. Certified for use in OSHPD (Office of Statewide Health Planning and Development) projects for healthcare facilities in the State of California. The OSHPD application number on file is OSP-0157-10.
  • Automation – Available for motor automation with portable or permanently mounted motor and controls. A variety of relays such as SEL, ABB, and GE are available with G&W Electric programming and cabinet construction. Cabinets can be ordered in a low voltage enclosure for padmount, pedestal or IP68 rated submersible for vault installed switchgear. Programming for automatic source transfer, or LaZer custom solutions are available.
Configurations Chart for PNI Front & Rear Access

# of WaysOne-line Diagram (Horizontal)Voltage Class (kV)Catalog Number
Approximate
Width* in. (mm)Wt. w/SF6 lbs (kg)
4F
15PFI20-376-12-4F38.2 (969)1200 (545)
25PFI20-386-12-4F
5F
15RPFI21-376-12-5F38.2 (969)1200 (545)
25RPFI21-386-12-5F
6F
15RPFI32-376-12-6F50.1 (1274)1500 (681)
25RPFI32-386-12-6F
7F
15RPFI31-376-12-7F50.1 (1274)1500 (681)
25RPFI31-386-12-7F
9F
15RPFI42-376-12-9F62.1 (1578)1800 (871)
25RPFI42-386-12-9F
11F
15RPFI43-376-12-11F62.1 (1578)1800 (871)
25RPFI43-386-12-11F
12F
center>
15RPFI41-376-12-12F62.1 (1578)1800 (871)
25RPFI41-386-12-12F
43F
15RPFI43-376-12-43F74.1 (1883)2100 (953)
25RPFI43-386-12-43F74.2 (1885)2250 (1023)
51F
15RPFI51-376-12-51F74.1 (1883)2300 (1044)
25RPFI51-386-12-51F74.2 (1885)2250 (1023)
52F
15RPFI52-376-12-52F74.1 (1883)2100 (953)
25RPFI52-386-12-52F
53F
15RPFI53-376-12-53F74.1 (1883)2100 (953)
25RPFI53-386-12-53F
54F
15RPFI54-376-12-54F74.1 (1883)2000 (908)
25RPFI54-386-12-54F
62F
15RPFI62-376-12-62F86.1 (2188)2400 (1089)
25RPFI62-386-12-62F
63F
15RPFI63-376-12-63F86.1 (2188)2400 (1089)
25RPFI63-386-12-63F
64F
15RPFI64-376-12-64F86.1 (2188)2300 (1044)
25RPFI64-386-12-64F
65F
15RPFI65-376-12-65F86.1 (2188)2300 (1044)
25RPFI65-386-12-65F
72F15RPFI72-376-12-72F98.1 (2493)2500 (1136)
25RPFI72-386-12-72F
Approximate Height: 59" (1499mm), Approximate Depth = 49" (1245mm)


Configurations Chart for VPNI

ModelOne-line Diagram (Horizontal)Voltage Class (kV)Catalog Number
Approximate
Width* in. (mm)Wt. w/SF6 lbs (kg)
4F
15VPFI20-376-25-4F38.1 (969)800 (363)
25VPFI20-386-25-4F
5F
15VRPFI21-376-12-5F32 (813)800 (363)
25VRPFI21-386-12-5F
6F
15VRPFI32-376-12-6F44 (1118)1000 (454)
25VRPFI32-386-12-6F
7F
15VRPFI31-376-12-7F44 (1118)1100 (499)
25VRPFI31-386-12-7F
9F
15VRPFI42-376-12-9F56 (1422)1200 (545)
25VRPFI42-386-12-9F
11F
15VRPFI43-376-12-11F56 (1422)1200 (545)
25VRPFI43-386-12-11F
12F
15VRPFI41-376-12-12F56 (1422)1200 (545)
25VRPFI41-386-12-12F
43F
15VRPFI43-376-12-43F68 (1727)1450 (658)
25VRPFI43-386-12-43F
51F
15VRPFI51-376-12-51F68 (1727)1650 (749)
25VRPFI51-386-12-51F
52F
15VRPFI52-376-12-52F68 (1727)1450 (658)
25VRPFI52-386-12-52F
53F
15VRPFI53-376-12-53F68 (1727)1450 (658)
25VRPFI53-386-12-53F
54F
15VRPFI54-376-12-54F68 (1727)1350 (613)
25VRPFI54-386-12-54F
62F
15VRPFI62-376-12-62F80 (2032)1650 (749)
25VRPFI62-386-12-62F
63F
15VRPFI63-376-12-63F80 (2032)1650 (749)
25VRPFI63-386-12-63F
64F
15VRPFI64-376-12-64F80 (2032)1550 (704)
25VRPFI64-386-12-64F
65F
15VRPFI65-376-12-65F80 (2032)1550 (704)
25VRPFI65-386-12-65F
72F
15VRPFI72-376-12-72F92 (2337)1500 (682)
25VRPFI72-386-12-72F
Approximate Height: 29.5" (749mm), Approximate Depth = 22.4" (569mm)
Ratings Chart for PNI Front Access

Voltage class15kV25kV35kV
Maximum design voltage15.5kV27kV38kV
Impulse level (BIL)110kV125kV150kV
One minute withstand35 AC kV60 AC kV70 AC kV
One minute withstand, production test rating34 AC kV40 AC kV50 AC kV
15 minute withstand53 DC kV78 DC kV103 DC kV
** Continuous and load break current630 Amps630 Amps630 Amps
Load Break Switch Momentary current40kA asym40kA asym40kA asym
Load Break Switch Fault close current, (3 times)40kA asym40kA asym40kA asym
Load Break Switch One second current25kA sym25kA sym25kA sym
Fault Interrupter Symmetrical interrupting rating12.5kA*12.5kA*12.5kA*
Load Break Switch Open gap withstand200kV200kV200kV
Load Break Switch 10 operation overload interrupting capability3000 Amps3000 Amps3000 Amps
Load Break Switch Operations load interrupting endurance at 600A120012001200
Mechanical endurance, operations200020002000
IEEE C37.60 Fault Interrupting Duty
Total number of fault interruptions: 116
Percent of Maximum Interrupting RatingNo. of Fault Interruptions
15 – 20%44
45 – 55%56
90 – 100%16
*25kA interrupting rating is available
** Available at 900Amps

Ratings Chart for PNI Front & Rear Access

Voltage class15kV25kV35kV
Maximum design voltage15.5kV27kV38kV
Impulse level (BIL)110kV125kV150kV
One minute withstand35AC kV60AC kV70AC kV
One minute withstand, production test rating34AC kV40AC kV50AC kV
15 minute withstand53DC kV78DC kV103DC kV
** Continuous and load break current630 Amps630 Amps630 Amps
Load Break Switch Momentary current40kA asym40kA asym40kA asym
Load Break Switch Fault close current, (3 times)40kA asym40kA asym40kA asym
Load Break Switch One second current25kA sym25kA sym25kA sym
Fault Interrupter Symmetrical interrupting rating12.5kA*12.5kA*12.5kA*
Load Break Switch Open gap withstand200kV200kV200kV
Load Break Switch 10 operation overload interrupting capability3000 Amps3000 Amps3000 Amps
Load Break Switch Operations load interrupting endurance at 600A120012001200
Mechanical endurance, operations200020002000
IEEE C37.60 Fault Interrupting Duty
Total number of fault interruptions: 116
Percent of Maximum Interrupting RatingNo. of Fault Interruptions
15 – 20%44
45 – 55%56
90 – 100%16
*25kA interrupting rating is available
** Available at 900Amps

Ratings Chart for VPNI

Voltage Class15kV25kV35kV
Maximum design voltage15.5kV27kV38kV
Impulse level (BIL)110kV125kV150kV
One minute withstand35 AC kV60 AC kV70 AC kV
One minute withstand, production test rating34 AC kV40 AC kV50 AC kV
15 minute withstand53 DC kV78 DC kV103 DC kV
Continuous and load break current630 Amps630 Amps630 Amps
Load Break Switch Momentary current40kA asym40kA asym40kA asym
Load Break Switch Fault close current, (3 times)40kA asym40kA asym40kA asym
Load Break Switch One second current25kA sym25kA sym25kA sym
Fault Interrupter Symmetrical interrupting rating 25kA25kA12.5kA*
Load Break Switch Open gap withstand200kV200kV200kV
Load Break Switch 10 operation overload interrupting capability3000 Amps3000 Amps3000 Amps
Load Break Switch Operations load interrupting endurance at 600A120012001200
Mechanical endurance, operations200020002000
IEEE C37.60 Fault Interrupting Duty
Total number of fault interruptions: 116
Percent of Maximum Interrupting RatingApprox. Interrupting Current, AmpsNo. of Fault Interruptions
15 – 20%2,00044
45 – 55%6,00056
90 – 100%12,50016
*25kA interrupting rating is available
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