Type PM-B, 123-145 kV, up to 63 kAPower circuit breaker

The 123-145 PM-B breaker is designed with interrupter, mechanism, and bushing technology and expertise that have been field proven on ABB SF6 dead tank breakers since 1992.

The breaker features interrupting performance through 63 kA without shunt capacitors for short line fault performance, a high performance interrupter which complies with IEEE’s new C2 capacitive current switching requirements, high performance interrupters which reduce the potential for overvoltages, a compact, fully-integrated spring-hydraulic operating mechanism, and one-piece interrupter assembly as well as externally accessible current transformers which enable simple field change-out.

Standard features- Dead tank design, with one 3-cycle self-blast interrupter per tank on a galvanized steel frame- National Board certification of interrupter tanks per the ASME Pressure Vessel and Boiler Code- All tanks factory leak tested in a hard-vacuum chamber with a helium mass spectrometer- Certified per ANSI C37.04, C37.06, and C37.09 Standards- Maintenance-free HMB-2 spring-hydraulic mechanism- Frame mounted NEMA-3R steel control cabinet protected with TGIC polyester powdercoat finish- Single tank-mounted gas density monitor and pressure gauge - Porcelain bushings- Continuous current ratings through 4000 A- Ships fully assembled and factory tested with 5 psig SF

6 gas

(bushings may be removed for export transit)

Options and accessories- Condition monitoring with the Circuit Breaker Sentinel (CBS)- Density monitor and temperature-compensated pressure gauge directly-mounted on each tank- Extra creep and/or extra strike bushings for special applications- Silicone rubber composite bushings- Tank heaters for operation in ambient temperatures below -30º C- High seismic designs

HMB-2 mechanismA type HMB-2 spring-hydraulic mechanism, located within the control cabinet, provides the driving force to gang-operate the breaker’s high performance interrupters.

ServiceABB HV Service offers an extensive range of available field services, from technical assistance to turn-key installation, which can dramatically reduce construction costs and speed time to commercial operation.

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For more information please contact: ABB Inc. High Voltage ProductsWestmoreland Distribution Park East100 Distribution Circle Mount Pleasant, Pennsylvania, USA Phone: +1 (724) 696-1500 Fax: +1 (724) 696-1502 www.abb.com/highvoltage

Rated capabilities

Circuit Breaker Type

Rated Maximum Voltage (kV, rms)

Short Circuit and Short Time

Current (kA, rms)

Maximum Continuous

Current (A, rms)

Rated Interrupting Time

(Cycles)

Full Wave Withstand Voltage

(kV, Peak)

Power Frequency Insulation

Withstand Voltage (kV, rms)

2 µ-sec Chopped Wave Impulse

Voltage (kV, Peak)

Closing and Latching Current

(kA, Peak)

123PM50-20B 123 50 2000 3 550 260 710 130

123PM50-30B 123 50 3150 3 550 260 710 130

123PM50-40B* 123 50 4000 3 550 260 710 130

123PM63-20B 123 63 2000 3 550 260 710 164

123PM63-30B 123 63 3150 3 550 260 710 164

123PM63-40-B* 123 63 4000 3 550 260 710 164

145PM50-20B 145 50 2000 3 650 310 838 130

145PM50-30B 145 50 3150 3 650 310 838 130

145PM50-40B* 145 50 4000 3 650 310 838 130

145PM63-20B 145 63 2000 3 650 310 838 164

145PM63-30B 145 63 3150 3 650 310 838 164

145PM63-40B* 145 63 4000 3 650 310 838 164

DENSITY MONITOR

140

20

40

60 80

100

120

PSIG

149 1/4" (3790)SHIPPING AND INSTALLED WIDTH

84 7/16" (2145)MAXIMUM DIM. FOR BUSHING REMOVAL

73 9/16" (1868)PHASE SPACING

73 9/16" (1868)PHASE SPACING

60 5/16" (1532)METAL TO METAL

178 3/8"(4530)

INSTALLEDHEIGHT

20"(508)

ADDITIONAL HEIGHTREQUIRED FOR

BUSHING REMOVAL

70 3/4"(1797)BREAKER

OPERATIONCOUNTER

33 9/16"(852)

BOTTOM OFCONTROLCABINET

119"(3022)MINIMUMBUSHINGHEIGHT

156 3/4"(3981)

LIVEPARTS

167 11/16"(4259)TOP OF

TERMINALPAD

60 1/4" (1530)ANCHOR BOLT SPACING

1 1/8"(29)

VACUUM /FILLING CONN.

208"(5283)MINIMUMDIM. FORBUSHINGREMOVAL

70 5/8" (1794)METAL TO METAL

101 5/8" (2582)MAXIMUM DIM. FOR BUSHING REMOVAL

46 1/16"(1170)BUSHINGSTRIKE

92 1/16" (2339)

85 11/16" (2176)

35 5/16" (897)

98 5/8"(2505)

HEIGHT TOC OF BREAKER

LOCATION OF EXTERNALELECTRICAL OUTLET

31 13/16"(808)

LEGEXTENSIONS

RUPTUREDISC

142 1/4"(3613)SHIPPINGHEIGHT

46 1/8" (1172)ANCHOR BOLT SPACING

73 13/16" (1875)CLEARANCE TO REMOVE INTERRUPTER

*4000A rating available only with porcelain bushings.