Medium-voltage outdoor vacuum distribution circuit breakers, type SDV6 (15.5 kV - 38 kV)

As of October 1, 2008, our U.S. business is called Siemens Energy, Inc.

Medium-voltage outdoor vacuum distribution circuit breaker, type SDV6 (15.5 kV - 38 kV) overview

Medium-voltage outdoor vacuum distribution circuit breaker, type SDV6 (15.5 kV - 38 kV) description and features
Technical data
Dimensions in inches
Front, side and rear view photos

SDV6 Outdoor Distribution Circuit Breaker 15.5kV - 38kV

Medium-voltage outdoor vacuum distribution circuit breaker, type SDV6 (15.5 kV - 38 kV) description and features

Siemens type SDV6 medium-voltage outdoor vacuum circuit breakers are available in voltage ratings from 15.5 kV to 38 kV. Siemens technology is proven in thousands of installations around the world. Add a Siemens protective relay to match any typical application and have a complete packaged solution.

15.5 kV, 20 kA to 40 kA, 1200 A to 3000 A, 110 kV BIL
27.6 kV, 20 kA to 25 kA, 1200 A to 2000 A, 150 kV BIL
38.0 kV, 20 kA to 40 kA, 1200 A to 2000 A, 200 kV BIL
Reliable performance - time proven operating mechanism
3AH3 operator derived from operators introduced in 1977
Common operator for all ratings
Extended capacitor switching (optional)
Out-of-phase switching ratings (optional)
Large control compartment
Porcelain dry-type bushings
Robust design
Stainless steel exterior hardware
Highly reliable vacuum interrupters - MTTF over 43,000 years
Pair with Siemens protective relays to match any typical application
Moderate and high seismic qualification (Zones 1-4)
Meets or exceeds the latest ANSI, IEEE and NEMA standards
ANSI "rain tested" enclosure (C37.20.2 1999)
Circuit breakers shipped completely assembled and ready to install

Technical data

Circuit breaker type	Rated maximum voltage	Rated withstand voltages	Rated withstand voltages	Rated short-circuit and short-time current	Rated interrupting time¹
		Lightning impulse (BIL)	Power frequency
	kV, rms	kV⁴	Hz	kA, rms	ms / cycles
15.5-20	15.5	110 / 142	50	20	83 / 5
15.5-25	15.5	110 / 142	50	25	83 / 5
15.5-31.5	15.5	110 / 142	50	31.5	83 / 5
15.5-40	15.5	110 / 142	50	40	83 / 5
27.6-20	27.6	150 / 194	60	20	83 / 5
27.6-25	27.6	150 / 194	60	25	83 / 5
38.0-20	38.0	200 / 258	80	20	83 / 5
38.0-25	38.0	200 / 258	80	25	83 / 5
38.0-31.5	38.0	200 / 258	80	31.5	83 / 5
38.0-40	38.0	200 / 258	80	40	83 / 5

Circuit breaker type	Rated continuous current	Rated transient recovery voltage (TRV)²	Rated transient recovery voltage(TRV)²	Rated permissible tripping delay time	Rated closing and latching current
		u_c TRV peak value	t₃ time to voltage u_c	Y
	A, rms	kV	us	sec	kA, peak
15.5-20	1200, 2000	29.2	32	2	52
15.5-25	1200, 2000	29.2	32	2	65
15.5-31.5	1200, 2000, 3000	29.2	32	2	82
15.5-40	1200, 2000, 3000	29.2	32	2	104
27.6-20	1200, 2000	52.1	45	2	52
27.6-25	1200, 2000	52.1	45	2	65
38.0-20	1200, 2000	71.7	59	2	52
38.0-25	1200, 2000	71.7	59	2	65
38.0-31.5	1200, 2000	71.7	59	2	82
38.0-40	1200, 2000	71.7	59	2	104

Control voltages, IEEE C37.06

Nominal	Range close	Range trip	Close coil A	Trip coil³A	Spring charging motor A run (average)	Spring charging motor charging seconds
48 Vdc	36 - 56	28 - 56	2.1	11.4 / 30	8	10
125 Vdc	90 - 140	70 - 140	1.0	5.4 / 7.4	4	10
250 Vdc	180 - 280	140 - 280	0.5	2.1 / 4.2	2	10
120 Vac	104 - 127	104 - 127	0.9	----	6	10
240 Vac	208 - 254	208 - 254	0.4	----	3	10

¹ Optional 50 ms (three-cycles) with 48 Vdc, 125 Vdc or 250 Vdc trip voltage.

²TRV values are in accord with IEEE C37.06-2009 TRV peak value u_c is roughly equal to historic E₂ value in IEEE C37.06-2000. Value t₃, time to voltage u_c is approximately 1/1.138 times the T₂ value in IEEE C37.06-2000.

³First value is for standard 83 ms / five-cycle interrupting time. Second value is for optional 50 ms / three-cycle interrupting time.

⁴ First value is full-wave impulse withstand with circuit breaker open or closed. Second value is chopped-wave impulse withstand, applicable only with circuit breaker closed.

Dimensions in inches

Rating	A	B	C	D	E	F	G (Minimum)	G (Maximum)	H	I	J
15.5 kV up to 2000 A	10.8	13.0	51.0	58.5	28.2	15.9	105.8	129.4	44.1	39.9	44.0
15.5 kV 3000 A	12.2	15.7	59.3	63.7	28.2	21.3	105.8	129.4	44.1	39.9	52.3
All 27.6 kV	12.2	15.7	59.3	58.5	28.2	15.9	106.3	129.9	44.1	39.9	52.3
All 38 kV	17.7	19.7	75.2	78.5	45.2	24.3	122.0	145.6	71.5	63.5	67.2