| Prod Model: |
HD4 |
| Breaking Capacity: |
High Voltage Circuit Breakers |
| Operation: |
Electric Type |
| Speed: |
Normal Type Circuit Breaker |
| Arc-extinguishing Medium: |
SF6 |
| Installation: |
Fixed |
| Poles Number: |
3 |
| Certification: |
ISO9001-2000 |
| Structure: |
Vcb |
Product Description
Medium voltage products
HD4
Gas insulated MV circuit-breakers up to:40.5kV;3600A;50kA
Description
General information
HD4 medium voltage circuit-breakers use sulphur hexafluoride gas(SF6) to extinguish the electric arc and as the insulating medium.
Breaking in SF6 gas takes place without any arc chopping and without generation of over voltages. These characteristics ensure long electrical life of the circuit-breaker and limited dynamic, dielectric and thermal stresses on the installation. The circuit-breaker poles, which make up the breaking part, are systems with lifelong sealed pressure(IEC 62271-100 standards) and are maintenance-free.
The ESH type mechanical operating mechanism, with stored energy has free release and allows opening and closing operations independently of the operator's actions.
The operating mechanism and the poles are fixed to the metal structure which also acts as a support for the kinetics for operating the moving contacts.
Circuit-breakers in the withdrawable version are fitted with a truck to allow racking in and racking in and racking out of the switchgear or enclosure.
The light and compact structure of the circuit-breaker ensures great sturdiness and excellent mechanical reliability.
Available versions
HD4 circuit-breakers are available in the fixed and withdrawable version with front operating mechanism. The withdrawable version is available for powercube modules and unigear type ZS1,ZS2,ZS3.2 switchgears.
Fields of application
HD4 circuit-breakers are used in power distribution to control and protect lines, transformer and distribution substations, motors, transformers, capacitor banks, etc.
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 motor, cable, etc. insulating materials may be particularly sensitive to dielectric stresses.
Circuit-breaker operating mechanism  |
- Gas monitoring device with led
- Opening pushbutton
- Mechanical undervoltage override
- Undervoltage release
- Service releases(opening and closing)
- Operating mechanism locking electromagnet
- Closing pushbutton
- Open/closed auxiliary contacts
- Protection circuit-breaker for closing spring loading motor
| - Lock that prevents racking-in when door is open
- Mechanical operation counter
- Pressure switch
- Mechanical signaling device for circuit-breaker open/closed
- Key lock removed when circuit-breaker is open
- Contacts for signaling spring charged/discharged
- Signaling device for closing springs charged/didcharged
- Closing spring loading motor limit switch
- Geared motor for closing spring charging
|
General characteristics of fixed circuit-breakers(17.5kV)| Circuit-breaker | HD4 17 |
| Standards IEC62271-100 | · |
| Rated voltage Ur(kV) | 17.5 |
| Rated insulation voltage Us(kV) | 17.5 |
| Withstand voltage at 50Hz Ud(1min)(kV) | 38 |
| Impulse withstand voltage Up(kV) | 95 |
| Rated frequency fr(Hz) | 50-60 |
| Rated normal current(40ºC)(1) Ir(A) | 630 | 1250 | 1600 | 2000 | 2500 | 3150 | 3600 |
| Rated breaking capacity Isc(kA) | 16 | 16 | - | - | - | - | - |
| - | - | - | - | - | - | - |
| 25 | 25 | - | 25 | 25 | 25 | 25 |
| 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 | - | - | - | - | - |
| - | - | - | - | - | - | - |
| 25 | 25 | - | 25 | 25 | 25 | 25 |
| 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 | - | - | - | - | - |
| 50 | 50 | - | - | - | - | - |
| - | - | - | 63 | 63 | 63 | 63 |
| 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 |
| Acring time(ms) | 10-15 |
| Total breaking time (ms) | 55-60 |
| Closing time (ms) | ≤85 |
| Overall dimensions |  | H(mm) | 623 | 655 | 655 |
| W(mm) | 618 | 618 | 730 |
| D(mm) | 446 | 561 | 603 |
| Pole centre distance(mm) | 210 | 210 | 275 |
| Weight (kg) | 114 | 145 | 165 |
| Standardized table of dimensions | 1VCD000231 | TN 163 | TN 7165 |
| Absolute SF6 gas pressure(2) (kPa) | 380(430 to 31.5kA) | 380 | 380 |
| Operating temperature (ºC) | -5…+40ºC |
| Tropicalization IEC:60068-2-30,60721-2-1 | · |
| Electromagnetic compatibility IEC 62271-1 | · |
- rated normal current defined in free air.
- Rated service value.
- Including insulating shields(available on request).
General characteristics of fixed circuit-breakers(24Kv)| Circuit-breaker | HD4 24 |
| Standards EC62271-100 | · |
| Rated voltage Ur(kv) | 24 |
| Rated insulation voltage Us(Kv) | 24 |
| Withstand voltage at 50Hz Ud(1 min)(kV) | 50 |
| Impulse withstand voltage Up(kV) | 125 |
| Rated frequency fr(Hz) | 50-60 |
| Rated normal current(40ºC)(1) Ir(A) | 630 | 1250 | 630 | 1250 | 1600 | 2000 | 2500 | 3150 | 3600 |
| Rated breaking capacity Isc(kA) | 16 | 16 | 16 | 16 | - | - | - | - | - |
| 20 | 20 | 20 | 20 | - | - | - | - | - |
| 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| - | - | - | - | 31.5 | 31.5 | 31.5 | 31.5 | 31.5 |
| - | - | - | - | 40 | 40 | 40 | 40 | 40 |
| - | - | - | - | - | - | - | - | - |
| Rated short-time withstand current(3s) Ik(kA) | 16 | 16 | 16 | 16 | - | - | - | - | - |
| 20 | 20 | 20 | 20 | - | - | - | - | - |
| 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| - | - | - | - | 31.5 | 31.5 | 31.5 | 31.5 | 31.5 |
| - | - | - | - | 40 | 40 | 40 | 40 | 40 |
| - | - | - | - | - | - | - | - | - |
| Making capacity Ip (kA) | 40 | 40 | 40 | 40 | - | - | - | - | - |
| 50 | 50 | 50 | 50 | - | - | - | - | - |
| 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 |
| - | - | - | - | 80 | 80 | 80 | 80 | 80 |
| - | - | - | - | 100 | 100 | 100 | 100 | 100 |
| - | - | - | - | - | - | - | - | - |
| Operation sequence (O-0.3s-CO-15s-CO) | · |
| Opening time (ms) | 35-60 |
| Arcing time (ms) | 10-15 |
| Total breaking time (ms) | 55-60 |
| Closing time (ms) | ≤85 |
| Overall dimensions |  | H(mm) | 818 | 730 | 655 | 818(3) |
| W(mm) | 618 | 748 | 730 | 730 |
| D(mm) | 600 | 496 | 561 | 620(3) |
| Pole centre distance I(mm) | 210 | 275 | 275 | 275 |
| Weight (Kg) | 119 | 119 | 145 | 165 |
| Standardized table of dimensions | 1VCD000235 | 1VCD000237 | TN 7174 | TN 7165 |
| Absolute SF6 gas pressure(2) (kPa) | 380 | 380(480 to 25kA and 40 kA) |
| Operating temperature (ºC) | -5…+40ºC |
| Tropicalization IEC:60068-2-30,60721-2-1 | · |
| Electromagnetic compatibility IEC62271-1 | · |
General characteristics of fixed circuit-breakes(36kV) | Circuit-breaker | HD4 36 | HD4 36 |
| Standards IEC62271-100 | · | · |
| Rated voltage Ur(kV) | 36 | 36 |
| Rated insulation voltage Us(kV) | 36 | 36 |
| Withstand voltage at 50Hz Ud(1 min)(kV) | 70 | 70 |
| Impulse withstand voltage Up(kV) | 170 | 170 |
| Rated frequency fr(Hz) | 50-60 | 50-60 |
| Rated normal current(40ºC)(1) Ir(A) | 630 | 1250 | 1600 | 1250(3) | 1600(3) | 2000(3) | 2500(3) |
| Rated breaking capacity Isc(kA) | 16 | 16 | 16 | - | - | - | - |
| 20(5) | 20(5) | 20(5) | - | - | 20 | 20 |
| - | - | - | 25 | 25 | 25 | 25 |
| - | - | - | 31.5 | 31.5 | 31.5 | 31.5 |
| Rated short-time withstand current(3s) Ik(kA) | 16 | 16 | 16 | - | - | - | - |
| 20 | 20 | 20 | - | - | 20 | 20 |
| - | - | - | 25 | 25 | 25 | 25 |
| - | - | - | 31.5 | 31.5 | 31.5 | 31.5 |
| Making capacity Ip(kA) | 40 | 40 | 40 | - | - | - | - |
| 50 | 50 | 50 | - | - | - | - |
| - | - | - | 63 | 63 | 63 | 63 |
| - | - | - | 80 | 80 | 80 | 80 |
| Operation sequence | (O-0.3s-CO-15s-CO) | | | | | | | |
| (O-0.3s-CO-3min-CO) | · | · | · | · | · | · | · |
| Opening time (ms) | 45 | 45 |
| Arcing time (ms) | 10-15 | 10-15 |
| Total breaking time (ms) | 55-60 | 55-60 |
| Closing time (ms) | 80 | 80 |
| Maximum overall dimensions without insulating screens between phases(4) | 
| H(mm) | 730/1060(6) | 790/1123(6) | 790/1123(6) |
| W(mm) | 880/955(6) | 748/805(6) | 748/805(6) |
| D(mm) | 695 | 833 | 833 |
| Pole centre distance I(mm) | 350 | 275 | 275 |
| Weight (kg) | 124 | 128 | 128 | 175 | 175 | 180 | 190 |
| Standardized table of dimensions | TN 7241 | TN 7268 | TN 7315 |
| Absolute SF6 gas pressure (kPa) | 380 | 450 | 450 |
| Operating temperature (ºC) | -5…+40 | -5…+40 |
| Tropicalizzazione IEC:60068-2-30,60721-2-1 | · | · |
| Electromagnetic compatibility IEC62271-1 | · | · |
| | Fixed HD4 36kv circuit-breaker with 350mm pole centre distance: Ir = 630-1250-1600A; Isc = 16-20kA. | Fixed HD4 36Kv circuit-breaker with 275mm pole centre distance: Ir =1250-1600A; Isc =25-31.5kA;
Ir =2000-2500A; Isc =20-25-31.5Ka. |
- Rated normal current defined in free air
- Rated service value
- For these versions, with 275mm pole centre distance, special insulating partitions are provided(on request)
- For the dimensions of the insulating partitions(available on request), see the standardised table in chapter 5
- Operation sequence: O-0.3min-CO-3min-CO
- The second distance refers to the circuit-breaker with truck(available on request)
ATTENTION:
1.The payment term: We accept TT,30% deposit and 70% balance against copy of BL.
2.The delivery time: Usually it will take about 15-20 days.
3.The standard of package: Usually use strong plywood case for protection.
4.The material of transformer: We have two types, one is with copper and another one is with aluminum. It depends on your requirement. In fact, those two have difference if normal work well. Only except the long life. Copper is better and also higher price.
5.The logo: If you have good quantity, it absolute no problem to do OEM.
6.Our market: our products are popular in Indonesia, Philippines, Russia, USA, Middle East and so on. Some of them are our regular customers and some of them are developing. We hope you can join us and make mutual benefit from our cooperation..
7.Warranty: in 12 month since BL date.
OUR SERVICE:
1.quick response in before sales period help you got order.
2.excellent service in production time let you know each step we made.
3.reliable quality solve you after sale headache.
4.long period quality warranty ensure you can buy without hesitate.
WHY CHOOSE ROCKWELL:
1. One-stop supplier globally.
2. More than 10 years professional experiences in electrical appliance industry.
3.We offer professional online technology support for perfecting your electrical solution free.
4. Experienced sales service and suggestion.
5. All the products with accessories under strict quality control and final inspection before shipping.
6. We can assure the powerful competitive price and reliable quality products.
7. Most competitive shipping rate from our own shipping forwarder.
8. Warranty assurance: 12 month
9. Whatever big or small order, we can provide you one-to-one service.
CONTACT US:
Contact person: Mr. Chen Chengming
Tel:86-577-27869969
Mobile:86-18668777248
Your Best Choice for Electrical Appliances Industry!!!
Please leave an inquiry to know more details about Price , Packing ,Shipping and Discount.
Wenzhou Rockwell Transformer Co., Ltd. is a high-tech enterprise invested by Rockwill Transmission and distribution Group Co., Ltd. Our company is specialized in developing, manufacturing and marketing Single phase & three phase automatic step voltage regulator, Auto-transformers, power transformers, preventive auto transformer, CT and PT combinated Metering unit, and compact transformer and pad moubted substations.
Our company enjoys a worldwide reputation for our superior quality and service. In addition to the domestic market, our products are exported to America, Australia, Central Europe, Eastern Europe, Southeast Asia, the Middle East, Africa and other regions and countries.
Besides a great variety of products, we also provide you with professional technical solutions and services. If you have any problem, please feel free to contact us and our technicians will find a complete solution for you.
We always embrace the idea of developing together with customers and always try our best to provide users with safer, easier, greener and more energy-saving high and medium voltage electric equipment and components.
Note:
Rockwell's sister company Rockwill is offering manufacturing for MV and LV switchgears, ring main units, vacuum(gas) circuit breakers, reclosers, load break switches and Low voltage metering unit, Current transformer, Voltage transformer.
