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.

Configure Your Product Email your specs

Features and Benefits

Construction - Available with front accessible switch operators and bushings or with front and back operators and bushings for replacement of existing pad mount air or oil insulated equipment. 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 25kA with selectable industry curves including fuse emulation curves.

Voltage Sensing - All 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, protection, or LaZer custom solutions are available.

Configurations Chart for PNI Front & Rear Access

# of Ways	One-line Diagram (Horizontal)	Voltage Class (kV)	Catalog Number	Approximate
				Width* in. (mm)	Wt. w/SF6 lbs (kg)
4		15	PNI20-376-12-4L	47.5 (1207)	1500 (682)
		25	PNI20-386-12-4L
		35	PNI20-396-12-4L
6		15	PNI32-376-12-6L	62.5 (1588)	1920 (873)
		25	PNI32-386-12-6L
		35	PNI32-396-12-6L
7		15	PNI31-376-12-7L	62.5 (1588)	2050 (932)
		25	PNI31-386-12-7L
		35	PNI31-396-12-7L
9		15	PNI42-376-12-9L	77.5 (1969)	2300 (1045)
		25	PNI42-386-12-9L
		35	PNI42-396-12-9L
11		15	PNI43-376-12-11L	77.5 (1969)	2400 (1091)
		25	PNI43-386-12-11L
		35	PNI43-396-12-11L
12		15	PNI41-376-12-12L	77.5 (1969)	2400 (1091)
		25	PNI41-386-12-12L
		35	PNI41-396-12-12L
51		15	PNI51-376-12-51L	92.5 (2350)	2900 (1318)
		25	PNI51-386-12-51L
		35	PNI51-396-12-51L
52		15	PNI52-376-12-52L	92.5 (2350)	2800 (1273)
		25	PNI52-386-12-52L
		35	PNI52-396-12-52L
53		15	PNI53-376-12-53L	92.5 (2350)	2750 (1250)
		25	PNI53-386-12-53L
		35	PNI53-396-12-53L
54		15	PNI54-376-12-54L	92.5 (2350)	2650 (1205)
		25	PNI54-386-12-54L
		35	PNI54-396-12-53L
62		15	PNI62-376-12-62L	107.5 (2731)	3300 (1500)
		25	PNI62-386-12-62L
		35	PNI62-396-12-62L
63		15	PNI63-376-12--63L	107.5 (2731)	3200 (1455)
		25	PNI63-386-12-63L
		35	PNI63-396-12-63L
64		15	PNI64-376-12-64L	107.5 (2731)	3100 (1409)
		25	PNI64-386-12-64L
		35	PNI64-396-12-64L
65		15	PNI65-376-12-65L	107.5 (2731)	3000 (1364)
		25	PNI65-386-12-65L
		35	PNI65-396-12-65L
72		15	PNI72-376-12-72L	104.3 (2648)	3850 (1750)
		25	PNI72-386-12-72L
		35	PNI72-396-12-72L
Approximate Height: 65" (1651mm), Approximate Depth = 55" (1397mm) Bushing Height: 48" (1224mm)

Configurations Chart for VPNI

Model	One-line Diagram (Horizontal)	Voltage Class (kV)	Catalog Number	Approximate
				Width* in. (mm)	Wt. w/SF6 lbs (kg)
4F		15	VPNI20-376-25-4F	43 (1092)	1050 (477)
		25	VPNI20-386-25-4F
		35	VPNI20-396-12-4F
5F		15	VPNI21-376-25-5F	43 (1092)	1100 (500)
		25	VPNI21-386-25-5F
		35	VPNI21-396-12-5F
6F		15	VPNI32-376-25-6F	58 (1473)	1300 (591)
		25	VPNI32-386-25-6F
		35	VPNI32-396-12-6F
7F		15	VPNI31-376-25-7F	58 (1473)	1400 (636)
		25	VPNI31-386-25-7F
		35	VPNI31-396-12-7F
9F		15	VPNI42-376-25-9F	73 (1854)	1550 (705)
		25	VPNI42-386-25-9F
		35	VPNI42-396-12-9F
11F		15	VPNI43-376-25-11F	73 (1854)	1650 (750)
		25	VPNI43-386-25-11F
		35	VPNI43-396-12-11F
12F		15	VPNI41-376-25-12F	73 (1854)	1650 (750)
		25	VPNI41-386-25-12F
		35	VPNI41-396-12-12F
43F		15	VPNI43-376-25-43F-BT	88 (2235)	1850 (839)
		25	VPNI43-386-25-43F-BT
		35	VPNI43-396-12-43F-BT
51F		15	VPNI51-376-25-51F	88 (2235)	2000 (909)
		25	VPNI51-386-25-51F
		35	VPNI51-396-12-51F
52F		15	VPNI52-376-25-52F	88 (2235)	1900 (864)
		25	VPNI52-386-25-52F
		35	VPNI52-396-12-52F
53F		15	VPNI53-376-25-53F	88 (2235)	1850 (839)
		25	VPNI53-386-25-53F
		35	VPNI53-396-12-53F
54F		15	VPNI54-376-25-54F	88 (2235)	1800 (818)
		25	VPNI54-386-25-54F
		35	VPNI54-396-12-53F
62F		15	VPNI62-376-25-62F	103 (2616)	2300 (1403)
		25	VPNI62-386-25-62F
		35	VPNI62-396-12-62F
63F		15	VPNI63-376-25-63F	103 (2616)	2200 (998)
		25	VPNI63-386-25-63F
		35	VPNI63-396-12-63F
64F		15	VPNI64-376-25-64F	103 (2616)	2100 (955)
		25	VPNI64-386-25-64F
		35	VPNI64-396-12-64F
65F		15	VPNI65-376-25-65F	103 (2616)	2000 (907)
		25	VPNI65-386-25-65F
		35	VPNI65-396-12-65F
72F		15	VPNI72-376-25-72F	118 (2997)	2600 (1182)
		25	VPNI72-386-25-72F
		35	VPNI72-396-12-72F
Approximate Height: 38" (965mm), Approximate Depth = 27" (686mm)

Ratings Chart for PNI Front Access

Voltage class	15kV	25kV	35kV
Maximum design voltage	15.5kV	27kV	38kV
Impulse level (BIL)	110kV	125kV	150kV
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 DC kV
** Continuous and load break current	630 Amps	630 Amps	630 Amps
Load Break Switch Momentary current	40kA asym	40kA asym	40kA asym
Load Break Switch Fault close current, (3 times)	40kA asym	40kA asym	40kA asym
Load Break Switch One second current	25kA sym	25kA sym	25kA sym
Fault Interrupter Symmetrical interrupting rating	12.5kA*	12.5kA*	12.5kA*
Load Break Switch Open gap withstand	200kV	200kV	200kV
Load Break Switch 10 operation overload interrupting capability	3000 Amps	3000 Amps	3000 Amps
Load Break Switch Operations load interrupting endurance at 600A	1200	1200	1200
Mechanical endurance, operations	2000	2000	2000
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
*25kA interrupting rating is available
** Available at 900Amps

Ratings Chart for PNI Front & Rear Access

Voltage class	15kV	25kV	35kV
Maximum design voltage	15.5kV	27kV	38kV
Impulse level (BIL)	110kV	125kV	150kV
One minute withstand	35AC kV	60AC kV	70AC kV
One minute withstand, production test rating	34AC kV	40AC kV	50AC kV
15 minute withstand	53DC kV	78DC kV	103DC kV
** Continuous and load break current	630 Amps	630 Amps	630 Amps
Load Break Switch Momentary current	40kA asym	40kA asym	40kA asym
Load Break Switch Fault close current, (3 times)	40kA asym	40kA asym	40kA asym
Load Break Switch One second current	25kA sym	25kA sym	25kA sym
Fault Interrupter Symmetrical interrupting rating	12.5kA*	12.5kA*	12.5kA*
Load Break Switch Open gap withstand	200kV	200kV	200kV
Load Break Switch 10 operation overload interrupting capability	3000 Amps	3000 Amps	3000 Amps
Load Break Switch Operations load interrupting endurance at 600A	1200	1200	1200
Mechanical endurance, operations	2000	2000	2000
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
*25kA interrupting rating is available
** Available at 900Amps

Ratings Chart for VPNI

Voltage Class	15kV	25kV	35kV
Maximum design voltage	15.5kV	27kV	38kV
Impulse level (BIL)	110kV	125kV	150kV
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 DC kV
Continuous and load break current	630 Amps	630 Amps	630 Amps
Load Break Switch Momentary current	40kA asym	40kA asym	40kA asym
Load Break Switch Fault close current, (3 times)	40kA asym	40kA asym	40kA asym
Load Break Switch One second current	25kA sym	25kA sym	25kA sym
Fault Interrupter Symmetrical interrupting rating	25kA	25kA	12.5kA*
Load Break Switch Open gap withstand	200kV	200kV	200kV
Load Break Switch 10 operation overload interrupting capability	3000 Amps	3000 Amps	3000 Amps
Load Break Switch Operations load interrupting endurance at 600A	1200	1200	1200
Mechanical endurance, operations	2000	2000	2000
IEEE C37.60 Fault Interrupting Duty Total number of fault interruptions: 116
Percent of Maximum Interrupting Rating	Approx. Interrupting Current, Amps	No. of Fault Interruptions
15 – 20%	2,000	44
45 – 55%	6,000	56
90 – 100%	12,500	16
*25kA interrupting rating is available