Audited Supplier
YJJI
Liquid Silicone Rubber
IEC
Black
38/66kv
dongfeng
Wooden Case
240-1600mm2
China
8535900090
Product Description
4E-YJJJI Fully Prefabricated Silicone Rubber Insulated Straight Through/Insulating Joint
Our company produces two main 4E-YJJTI,YJJJI fully prefabricated silicone rubber insulated straight through/insulating joint, 4E-YJJTI and 4E-YJJJI, applied to connection between the two identical section or similar section of the cable. They are composed of prefabricated insulating body (stress cone included), metal protective shell, and fiberglass outer protective shell. The main body of prefabricated soft silicone rubber is using imported liquid silicone rubber injection rubber molding soft dry structure, which has long-term stability of lasting hold power and electric field uniform ability. Metal protective shell ring is composed with two different lengths of metal tail tube and insulating tuber, filled with insulating sealant inside, and covered with sealing insulation.
For different work environment and users' specified requirement, metal protective shell and fiberglass outlet shell are optional. Without water damage, mechanical damage, or corrosion, outer metal protective shell and fiberglass free are better for heart dissipation of the product to ensure a long life.
|
| Size mm | 48/66kV | 64/110kV | 80/138kV | 127/220kV |
| L | 1600 | 1600 | 1632 | 1760 |
| A | 2000 | 2100 | 2200 | 2400 |
Compact structure: silicone rubber parts is using fully prefabricated rubber insulator with small size compact structure, straight through and insulating joints share the same preform.
Easy installation: using advanced dual installation, one machine to expand, another shrinkable in connection cable, greatly improved installation efficiency, reducing the labor.
Type test and pre-identification test on 66~220kV cable accessories:
| Item | Test requirement | Test type | Products type | ||||||
| 48/66 | 64/110 | 127/220 | Porcelain bushing | Composite busing | GIS termination | Straight through/ Insulating joint | Soft dry type termination | ||
| Sealing fittings, porcelain bushing, composite bushing | 0.25±0.01MPa/1h, no leakage | R | P | P | P | - | - | ||
| Epoxy bushing | 0.6~0.7MPa/1h, no leakage | ||||||||
| Prefabricated body partial discharge test | 72kV | 96kV | 190kV | R | P | P | P | P | P |
| Partial discharge in the background | |||||||||
| Prefabricated body power frequency withstand voltage test | 120kV | 160kV | 318kV | R | P | P | P | P | P |
| 30min, no flashover no breakdown | |||||||||
| Partial discharge test at ambient temperature | 72kV | 96kV | 190kV | T | P | P | P | P | P |
| Partial discharge in the background | |||||||||
| Thermal cycling voltage test | 96kV | 128kV | 254kV | T | P | P | P | P | P |
| 20 cycles, no flashover no breakdown | |||||||||
| Partial discharge at high temperature | 72kV | 96kV | 190kV | T | P | P | P | P | P |
| Partial discharge in the background | |||||||||
| Lighting impulse voltage test and the subsequent power frequency withstand voltage test | 450kV | 550kV | 1050kV | T | P | P | P | P | P |
| 10 times, no flashover no breakdown | |||||||||
| 120kV | 160kV | 318kV | |||||||
| 15min, no flashover no breakdown | |||||||||
| Immersion voltage test on outer protective sheath of direct-buried joint | 60/75kV impact both ends, 30/37.5kV impact one end to the ground | 60/95kVimpact both ends, 30/47.5kV impact one end to the ground | T | - | - | - | P | - | |
| Sealing test after installing accessories | 0.25±0.01MPa/1h, no leakage | T | P | P | P | P | P | ||
| Outdoor termination frequency voltage test in rain | 140kV | 185kV | 460kV | T | P | P | - | - | P |
| 1min, no flashover no breakdown | |||||||||
| Post insulator voltage test | 20kV/1min, no flashover no breakdown | T | P | P | - | - | - | ||
| Outdoor termination radio interference test | 61kV | 81kV | 140kV | A | P | P | - | - | P |
| 1MHz radio interference, voltage≤450μV | 1MHz radio interference, voltage≤500μV | ||||||||
| Accessories sample test | Detect accessories system, no significant errors effect operating | T | P | P | P | P | P | ||
| DC voltage test | / | 20kV/1min between inner conductor and metallic screen of joint, no breakdown | T | - | - | - | P | - | |
| Conductor connecting pole (tube) pressure welding fitting performance test | After crimping, the total resistance is not 1.2 times more than the same length and cross sectional area of conductor | T | P | P | P | P | P | ||
CERTIFICATE
Type test report and KEMA report for 1kV to 220kV cable accesories
TEST AND PRODUCTION EQUIPMENT
1000kV ultra-high voltage test hall, 500kV high voltage test hall, fully automatic rubber injection molding system, 100000 level dust-free workshop
COMPANY PROJECTS
Our company's business and services span across dozens of provinces and cities nationwide, and we also export to international markets, including Australia, Peru, South Africa, Russia, the United States, Cyprus, New Zealand, Bangladesh, Tanzania, and more. We have gained significant recognition and reputation both domestically and internationally. In recent years, the company has been continuously enhancing its quality management and service systems. We are not content with our current achievements; instead, we strive for continuous progress, consistently reaching new milestones.
