General:
ZHW2-12 Outdoor AC HV Metal-clad Ring Main Unit Switchgear (hereafter referred to as Outdoor Ring Main
Unit) is suitable for Outdoor distribution network of cable incoming and outgoing line with AC 50Hz, 12 kV rated
voltage. It is widely used in the industrial zone, residential area and commercial centers. As switchgear of RMU
Power supply or terminal power supply, it can break load current and break the short circuit current by fuse. It is
specialized in the power grids free of maintenance and with high degree of automation. This outdoor Ring Main
Unit has replaced the regular switching station and it cuts down the occupied area of outgoing cable largely and
the cost as well as reducing the loss of the cable.
Product feature:
A. This product has two structures. One is that the outdoor RMU is mounted with vacuum load switch and load
circuit breaker made by ourselves. It is resembled by weld and bent corrosion resistance plates. And smooth
rotating doors are fitted on the incoming and outgoing terminals (please open the door from down to up and
close or open the door on the side from up to down). While opening the door, the incoming and outgoing line
units and operating units of RMU can be seen. The incoming and outgoing line units are connected with cable
connectors and bushings, and the bushing are fixed under the operating panel, which makes it easy to connect
with cable. The operating mechanism is fixed in the front of the face plates in order to make the motor-drive
operation easy. The main components inside the RMU Switchgear are vacuum load switch and vacuum circuit
breaker, which can control and protect the incoming line and the outgoing line. The user can choose the
combined mode according to what they need. The typical scheme is two outgoing lines and two incoming lines
(composed of four main switches). At the same time, the current transformer, voltage transformer and lightning
arrestor and other elements are able to be fitted.
B. Another structure is that the outdoor RMU is fitted in imported SF6 RMU, product feature is:
It is feature by compact structure, small size, less occupied area and fine looking. The body is made of
compound plates and the ceiling is made of glazed tile. There is a RMU imported from Germany, the origin
place, which has the characteristics of seal, insulation, high reliability and being free of maintaining. The internal
malfunction electric arc restraint device is fitted in the RMU, which can provide the greatest level of protection
for personnel and equipments. It is easy to alternate the fuse for the SF6 RMU. When the fuse melts, it sends
mechanical indication signal. The fuse'dimension is complied with IEC Standards and it has remote control
joints, interlock of earthing switch. The function of mechanical interlock is complete, simple but reliable
(complied with "Five protection"requirement) and can prevent varieties of incorrect manipulation, besides it is in
conformity with GB3906-1991 and GB11022-1999 requirement. The dimension requested in the scheme of "two
incoming line and one outgoing line"scheme, 1400*900*1630( width*depth*height).
Technical parameters:
| No. |
Name |
Unit |
Parameter |
| 1 |
Rated voltage |
kV |
12 |
| 2 |
Rated frequency |
Hz |
50 |
| 3 |
Rated current |
A |
630 |
| 4 |
Rated short-time withstand current |
kA |
25 |
| 5 |
Power frequency withstand voltage |
kV |
42 |
| 6 |
Lightning impulse withstand voltage |
kV |
95 |
| 7 |
Environmental temperature |
º C |
-25 TO +60 |
| 8 |
Protection level |
|
IP44 |
Technical parameter table of vacuum circuit breaker and outdoor RMU of vacuum load switch manufactured by
our company:
| Name |
Unit |
Parameter |
| Rated voltage |
kV |
12 |
| Rated frequency |
Hz |
50 |
| Rated current of main busbar |
A |
630 |
| Rated current (functional units) |
A |
630/200 |
| 3s rated short-time withstand current (r. m. s of functional units) |
kA |
20 |
| Rated short circuit breaking current (outgoing line terminal) |
kA |
20 |
| Rated short circuit making current |
kA |
50 |
| Rated peak withstand current (peak value) |
kA |
50 |
| Rated active load breaking current |
A |
630 |
| Rated closed loop breaking current |
A |
630 |
| 5% rated active load breaking current |
A |
31.5 |
| Rated cable charging breaking current |
A |
10 |
| Rated no load transformer breaking capacity |
kVA |
1600 |
1min power frequency withstand voltage of main circuit dry state/ hygrometric state (phase to phase, phase to earth, between
isolating distance) (r. m. s ) |
kV |
42/38 |
| Lightning impulse withstand voltage phase to earth, phase to phase and isolating distance |
kV |
75 |
| 1min power frequency withstand voltage of secondary circuit (r. m. s) |
kV |
2 |
Our Services
| 1. |
Pre sale service |
| a. |
make technical solution |
| b. |
send quotation, technical data sheet and drawing |
| c. |
prepare power transmission plan, testing plan and shipment plan |
| 2. |
In sale service |
| a. |
supervise the manufacturing schedule totally in accordance with the plan |
| b. |
send photos to customer during every manufacturing process(hold point) |
| c. |
inform the customer one week before testing. |
| 3. |
After sale service |
| a. |
installation and commissioning, training the workers |
| b. |
quick response within 12 hours any time |
| c. |
provide 12 months guarantee period normally. |
FAQ
| 1. Q: |
What is your delivery time ? |
| A: |
Depend on the type of transformer. |
| 2. Q: |
What is your payment term? |
| A: |
30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it. |
| 3. Q: |
What kind of standard you follow? |
| A: |
IEC, ANSI, CSA, GB, etc |
| 4. Q: |
What kind of supporting documentation you can provide normally |
| A: |
Quotation, outline drawing, manufacturing plan, quality control plan
testing plan, financial report, type test report(KEMA, CESI),reference list, etc |
| 5. Q: |
What is your normal warranty period? |
| A: |
12 months after transformer operation. |
| 6. Q: |
Can u do installation and commission in user's site? |
| A: |
Yes, we can send our installation team to user's country for service. |
| 7. Q: |
Do you have any experience in this kind of transformer? |
| A: |
Yes, we can provide reference list for check. |
Our advantages:
Quality Assurance
--From the very beginning, VILLE ensures quality in every step to achieve the best quality.
Experience Sharing
--With more than 30 years' experience in power industry, VILLE brings you an optimized solution.
Global Service
--Wherever you are, VILLE global network will support and provide you with value.
Quick Response
--In response to your needs without delay, VILLE knows the value of your time.
Thanks for choosing VILLE as your reliable partner and
please trust both of us will create a brilliant future!
Audited Supplier 
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