Air Insulation Electrical Switchgear Ring Main Unit

• Customization: Available
• Certification: ISO9001
• Shell Material: Expoxy
• Model NO.: SM66
• Voltage Level: Medium Voltage
• Installation: Fixed
• Structure: Cabinet
• Current: AC
• Transport Package: Carton
• Specification: IEC, GB
• Trademark: Rockwill
• Origin: China
• HS Code: 8535210000
• Production Capacity: 1000PCS

Product Description

Product Description
Description

The Unisun enjoy more than 16 year experience manufacture SF6 Ring main Unit in china, we import first APG line from Germany to localized air pressure guage production craft, our APG manufacturing including SF6 switch disconnector, embedded pole and etc epoxy resin insulation parts. SM66 units are used for the MV section in MV/LV transformer substations in public distribution systems and MV consumer or distribution substations up to 24 kV.
 
Feature

The SM66 range is made up of modular units containing metal-enclosed SF6 switchgear, using Sulphur hexafluoride (SF6) or vacuum:switch-disconnector;VD4S vacuum circuit breaker;Vacuum contactor;disconnector. 

Unit definitions

Below is the list of SM66 range units used in MV/LV transformer substations and industrial distribution substations:IM, IMC, IMB switch;PM fused switch;QM, QMC, QMB fuse-switch combination;CRM contactor and contactor with fuses;DM1-A, DM1-D, DM1-S single-isolationSF6 type circuit breaker;DMV-A, DMV-D, DMV-S single-isolation vacuum type circuit breaker;DM1-W, DM1-Z withdraw able single-isolationSF6 type circuit breaker;DM2 double-isolation SF6 type circuit breaker;CM, CM2 voltage transformers;GBC-A, GBC-B current and/or voltage measurements;

Standards

iSM6 units meet all the following recommendations, standards and specifications:IEC:60694:IEC62271-200IEC60265IEC60420IEC60255IEC62271-100IEC62271-102 

Designation

iSM6 units are identified by a code including:an indication of the function, i.e. the electrical diagram code: IM, QM, DM1, CM, DM2, etc.the rated current: 400 - 630 - 1250 A;the rated voltage: 7.2 - 12 - 17.5 - 24 kV;the maximum short-time withstand current values: 12.5 - 16 - 20 - 25 kA.1 s;the color is of RAL 9002 type (frosted satin white).Example for a unit designated: IM 400 - 24 - 12.5IM indicates an "incoming" or "outgoing" unit;400 indicates the rated current is 400 A;24 indicates the rated voltage is 24 kV;12.5 indicates the short-time withstand current is 12.5 kA.1 s. 
The hereunder values are for working temperatures from -5°C up to +40°C and for a setting up at an altitude below 1000 m.

Internal arc withstand:standard:12.5 kA. 0.7 s;
enhanced:16 kA. 1 s.
Protection index:units: IP2XC (IP3X consult us);
between compartments: IP2x.
Electro-magnetic compatibility:relays: 4 kV withstand capacity, as per recommendation IEC 60801.4;
compartments:electrical field:Temperatures:
The cubicles must be stored in a dry area freefrom dust and with limited temperature variations.for stocking: from -40°C to +70°C,for working: from -5°C to +40°C,other temperatures, consult us.

Main characteristics

Rated voltage (kV)		7.2	12	17.5	24
Insulation level
50 Hz, 1 mn (kV rms)	Insulation	20	28	38	50
	Isolation	23	32	45	60
1.2/50μs (kV peak)	Insulation	60	75	95	125
	Isolation	70	85	110	145
Breaking capacity
Transformer off load (A)		16
Cables off load (A)		31.5
Short-time withstand current  (kA.1 s)	25	630 - 1250 A
	20	630 - 1250 A
	16	630 - 1250 A
	12.5	400 - 630 - 1250 A
The making capacity is equal to 2.5 times the short-time withstand current. * 60 kV peak for the CRM unit.
Maximum breaking capacity
Rated voltage (kV)		7.2	12	17.5	24
Units
IM, IMC, IMB,  NSM-cables, NSM-busbars		630 A - 800 A*
PM, QM, QMC, QMB		25 kA		20 kA
CRM		10 kA	8 kA
CRM with fuses		25 kA
SF6 circuit breaker range:
DM1-A, DM1-D, DM1-W, DM1-Z, DM1-S, DM2		25 kA		20 kA
Vacuum circuit breaker range:
DMV-A, DMV-D, DMV-S		25 kA		20 kA

 

 

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:[phone]
Mobile:[phone]

 

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