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   [3kV - 24kV Rated]
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Home › Products › Arresters › Substation › Porcelain › VLA Porcelain Station [3kV - 24kV Rated]

VLA Porcelain Station [3kV - 24kV Rated]

Protective Characteristics

Type	Standard Arrester Catalog Number	Duty Cycle Rating kV rms	Arrester MCOVkV rms	Maximum 0.5?s Discharge Voltage kV (1)	Maximum Switching Surge Protective Level At Classifying Current Levels kV (2)	Maximum Discharge Voltage Using an 8/20 Current Wave-kV
						1.5kA	3kA	5kA	10kA	20kA	40kA
VLA	217003	3	2.55	9.1	6.3	6.9	7.2	7.5	8	9	10.3
VLA	217005	6	5.1	17.9	12.4	13.6	14.2	14.8	15.8	17.7	20.3
VLA	217008	9	7.65	26.6	18.4	20.2	21.1	22	23.5	26.4	30.2
VLA	217009	10	8.4	29.3	20.3	22.2	23.3	24.2	25.9	29.1	33.3
VLA	218510	12	10.2	35.5	24.6	26.9	28.2	29.4	31.4	35.2	40.4
VLA	217013	15	12.7	44.2	30.6	33.5	35.1	36.6	39.1	43.9	50.3
VLA	217015	18	15.3	53.3	36.8	40.4	42.3	44.1	47.1	52.8	60.6
VLA	218517	21	17.0	59.1	40.9	44.8	46.9	48.9	52.3	58.7	67.2
VLA	218519	24	19.5	67.8	46.9	51.4	53.8	56.1	60	67.3	77.1

• (1) Maximum discharge voltage for an impulse current wave which produces a voltage wave cresting in 0.5 μs. Discharge currents are 10 kA for 2.55 - 245kV MCOV. This can be used for coordination where front-of-wave sparkover formerly was used.
• (2) Discharge voltages are based on a 500A surge of 45 μs time to crest through 88kV MOV and 1,000A surge of 45 μs-time to crest through 180kV MCOV and 2,000A through 245kV MCOV.

Dimensions and Mounting

Type	Standard Arrester Catalog Number	Duty Cycle Rating kV rms	Maximum Continuous Operating Voltage kV rms	Drawing Number	"X" Dimension (Inches)	Minimum Leakage Distance (Inches)	Minimum Mounting Spacing on center&dagger		Net Weight (Pounds)
							Phase to Phase (in-line (Inches)	Phase to Ground (Inches)
VLA	217003	3	2.55	1	12	11.1	11	5.5	35
VLA	217005	6	5.1	1	12	11.1	11	5.5	40
VLA	217008	9	7.65	1	12	11.1	11	5.5	40
VLA	217009	10	8.4	1	12	11.1	11	5.5	40
VLA	218510	12	10.2	1	12	11.1	11	6.5	42
VLA	217013	15	12.7	1	16.25	20	11	7.5	50
VLA	217015	18	15.3	1	16.25	20	11	9	50
VLA	218517	21	17.0	1	16.25	20	11	9	51
VLA	218519	24	19.5	1	16.25	20	11	9	52

• † Minimum clearances are based on arrester protective levels and should be increased when necessary to meet local requirements for spacing of energized equipment.
• ‡ Three units.