HD4 12-40.5kv – 630-3600A – 16-50ka Sf6 Indoor Circuit Breaker

• Customization: Available
• Breaking Capacity: Medium Voltage
• Operation: Energy-storage Type
• Model NO.: HD4
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: SF6
• Installation: Open Frame
• Structure: Sf6 CB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker
• Certification: VDE
• Rated Voltage: 12-40.5kv
• Rated Current: 630-3600A
• Rated Frequency: 50/60Hz
• Rated Duty Breaking Capacity: 12.5/16/20/25ka
• Making Capacity: 31.5/40/50/63ka
• Transport Package: Carton for Export
• Specification: 114kg
• Trademark: ABB-
• Origin: China

Product Description

     HD4 breakers are used in electrical distribution for control and protection of cables, overhead lines, transformer and distribution substations, motors, transformers, generators and capacitor banks. Thanks to the SF6 autopuffer breaking technique, the HD4 circuit breakers do not generate operating overvoltages, and are therefore also highly suitable for retrofitting, upgrading and enlarging older installations where the insulating materials for the motor, cable, etc. may be particularly sensitive to dielectric stresses

Product scope

• Medium voltage gas breaker with mechanical actuator (spring mechanism) for primary distribution up to 40.5 kV, 3600 A, 50 kA.

Key benefits

• Unique ABB- quenching technique to ensure smooth switching operations
• Ideal for all applications (eg, capacitor bank switching, marine, GOST)
• Ideal circuit breaker for revamping and retrofitting in aging plants in which insulating materials have been stressed since for a long time
• Cassettes and module systems available for OEMs and panel builders to create their own solutions
• Fully interchangeable (both for overall dimensions and electrical diagrams) with ABB- VD4 medium voltage gas circuit breaker
• Only one common actuator for up to 40.5 kV with a wide range of accessories, safety locks and interlocks

Key features

• Sealed-for-life SF6 poles with the unique ABB- autopuffer quenching technique joining the advantages of "puffer" and "self-blast"
• Spring-operated mechanical actuator ensuring easy operation even without auxiliary supply
• Pressure switch on request to continuosly monitor the status of the interrupting device

Specifiction

Circuit breaker		HD4 12
Standards		IEC 62271-100	•
Rated voltage		Ur [kV]	12
Rated insulation voltage		Us [kV]	12
Withstand voltage at 50 Hz		Ud (1 min) [kV]	28
Impulse withstand voltage		Up [kV]	75
Rated frequency		fr [Hz]	50-60
Rated normal current (40 °C) (1)		Ir [A]	630	1250	630	1250         1600         1600         2000         2500         3150         3600
Rated breaking capacity		Isc [kA]	16	16	16	16              -                  16              -                 -                 -                 -
			25	25	25	25              -                  25              25              25              25              25
			31.5	31.5	31.5	31.5          -                  31.5           31.5           31.5           31.5           31.5
			-	-	-	-                  40              -                  40              40              40              40
			-	-	-	-                  50              -                  50              50              50              50
Rated short-time withstand current (3 s)		Ik [kA]	16	16	16	16              -                  16              -                 -                 -                 -
			25	25	25	25              -                  25              25              25              25              25
			31.5	31.5	31.5	31.5          -                  31.5           31.5           31.5           31.5           31.5
			-	-	-	-                  40              -                  40              40              40              40
			-	-	-	-                  50              -                  50              50              50              50
Making capacity		Ip [kA]	40	40	40	40              -                  40              -                 -                 -                 -
			63	63	63	63              -                  63              63              63              63              63
			80	80	80	80              -                  80              80              80              80              80
						-                  100           -                  100            100            100            100
			-	-	-	-                  125           -                  125            125            125            125
Operation sequence                                            [O-0.3s-CO-15s-CO]			•
Opening time                                                                                            [ms]			35-60
Arcing time                                                                                                [ms]			10-15
Total breaking time                                                                                 [ms]			45-75
Closing time                                                                                               [ms]			≤85
Weight                                                                                                        [Kg]			114                                114				145            114	165
Standardised table of dimensions			1VCD000226            1VCD000231				TN 7163 TN 7178	TN 7165
Absolute SF6  gas pressure (2)                                                                                                   [kPa]			380 (430 a 31.5 kA)				380
Operating temperature                                                                         [°C]			- 5 ... + 40 °C
Tropicalization                                                                IEC: 60068-2-30, 60721-2-1			•
Electromagnetic compatibility                                      IEC 62271-1			•