Proudly manufactured in Lake Mary, Florida, our medium voltage air-insulated switchgear provides safe, reliable switching and fault protection.
JST Power Equipment type J100CLAD™ is an IEEE-rated, non-arc-resistant, metal-clad switchgear product line with Type J3MAG™ vacuum circuit breakers.
Product ratings and highlights listed below:
| Parameters | Unit | 4.76kV | 8.25kV | 15kV |
| Rated Voltage | kV | 2.4, 4.16 | 4.8, 6.9, 7.2 | 7.2, 8.4, 12.47, 13.2, 13.8, 14.4 |
| Rated Continuous Current | A | 1200, 2000, 3000 | ||
| Short Circuit Current | kA | 25,31.5,40,50 | 40 | 25, 31.5,40,50 |
| Rated Short-Time Current, 2 sec. | kA | 25,31.5,40,50 | 40 | 25, 31.5,40,50 |
| Rated Frequency | Hz | 60 | 60 | 60 |
| Rated Frequency Withstand | kV | 19 | 36 | 36 |
| Power Frequency Withstand | kV | 60 | 95 | 95 |
| Rated Withstand Current, 10 Cycles | kA | 65 to 130 | 104 | 65 to 130 |
| Max. Permissible Tripping Delay | Sec. | 2 | ||
| Rated Close & Latch Current Rating | kA | 65 to130 | 104 | 65 to 130 |
| Rated Cable Charging Current | A | 25 | 25 | 25 |
| Rated Isolated Capacitor Bank Current | C2 630A | C2 630A | C2 630A | |
| Rated Interrupting Time, 50 ms. | ms. | 50 | 50 | 50 |
| Rated Control Voltage | AC/DC | 48-250 | 48-250 | 48-250 |
| Standard Operating Duty | O-0.3s-CO-3min-CO | O-0.3s-CO-3min-CO | O-0.3s-CO-3min-CO | |
JST’s Medium voltage gas-insulated switchgear offering consists of fixed-mounted vacuum circuit breakers that are connected to the main bus through three-position switches.
JST’s gas insulated switchgear a new generation of miniaturization gas insulated medium voltage switchgear for distribution applications that utilizes advanced technologies of laser, sensing, composite insulation and electric field optimization, informatized and intelligent production and control methods to ensure product’s quality and reliability.
JST’s medium voltage gas-insulated switchgear is tested according to the following standards:
IEC 62271-200, IEC 62271-103, IEC 62271-105, IEC 62271-102, IEC 62271-100, IEC 480, GB11023, GB12022 and GB11033
Medium voltage applications using SF6 gas and Air as an insulating medium. For use on lighter duty secondary distribution applications, we offer a variety of panel designs at the standard ratings:
Ring Main Unit is a medium voltage solution utilizing SF6 gas as an insulating medium. RMU is offered in a range of ratings designed for use on secondary distribution applications. We offer a variety of panel configurations to suit all the required needs at the following ratings:
An eco-friendly ring main unit used on medium voltage applications utilizing N2 gas as an insulating medium. For use in lighter duty secondary distribution applications, we offer a variety of panel designs at the standard ratings:
For use on medium voltage applications utilizing an epoxy resin composite as an insulating medium. For use on secondary distribution applications, we offer a variety of panel designs at the standard ratings:
Medium voltage applications using SF6 gas and Air as an insulating medium. For use on lighter duty secondary distribution applications, we offer a variety of panel designs at the standard ratings:
| Parameters | Unit | J20X™ | J10X™ | J10N™ | J10S™ | J10SI™ | |
| C-GIS | RMU | Nitrogen RMU | Soild-Insulated | Semi Insulated | |||
| Insulated Medium | SF6 | SF6 | SF6 | N2 | Solid Resin | SF6 and Air | |
| Lightning Impulse Withstand (BIL) | kV | 150 | 150 | 95/125 | 95 | 95 | 95 |
| Rated Voltage | kV | up to 40.5kV | up to 40.5kV | up to 24kV | up to 12k | up to 12k | up to 12k |
| Rated Current | A | up to 2500A | up to 1250A | up to 630A | up to 630A | up to 630A | up to 630A |
| Rated Short Circuit Breaking Current | kA | up to 31.5kA | up to 25kA | up to 25kA | up to 20kA | up to 25kA | up to 20kA |
| Dimensions (WxDxH) | mm | 600-800x1600x2400 | 450x1000x1700 | 350x800x1450 | 44x800x1450 | 440x898x18700 | 375x915x1800 |
| in | 24-32x63x94.5 | 14x32x57 | 14x32x57 | 17.5x32x57 | 17.5x32x57 | 1 | |
Medium voltage applications using SF6 gas and Air as an insulating medium. For use on lighter duty secondary distribution applications, we offer a variety of panel designs at the standard ratings:
J20XGear: Cubicle Type Gas insulated Switchgear (C-GIS type Metal Enclosed Switchgear) – Ratings Table:
| No. | Item | Unit | Switch Disconnect Unit (Panel G) | Circuit Breaker Unit (Panel V) | |
| 1 | Rated Voltage | kV | 15/27/38 | ||
| 2 | Rated Power Frequency Withstand Voltage (1 min) | Phase - Phase and Phase - Ground | kV | 36/60/80 | |
| Across isolated switch | kV | 40/66/88 | |||
| 3 | Rated Impulse Withstand Voltage (BIL) | Phase - Phase and Phase - Ground | kV | 95/125/150 | |
| Across isolated switch | kV | 105/145/165 | |||
| 4 | Rated Frequency | Hz | 50/60 | ||
| 5 | Rated Current | A | 600/1200/2500/3000* (* only for 15kV) | 600/1200/2500/3000* (* only for 15kV) | |
| 6 | Rated Short Circuit Interrupting Current | kA | N/A | 20/25/31.5/40* | |
| 7 | Rated Short time Withstand Current (2 Sec) | kA | Up to 31.5 | 20/25/31.5/40* | |
| 8 | Rated Peak withstand Current | kA | Up to 82 | 52/65/82/104* | |
| 9 | Rated Close & Latch Current | kA | Up to 82 | 52/65/82/104* | |
| 10 | Mechanical Endurance | Ops | 3000/3000 (DC/ES) | 10000/3000/3000 (VCB/DC/ES) | |
| 11 | Rated Gas Pressure (@ 20֯C) | Bar | 1.3 (15/27 kV and 1.4 (38kV) | ||
| 12 | Annual Leakage Rate | %/year/Tank | < 0.01% | ||
| 13 | Insulated Gas | SF6 (15/27/38 kV) | |||
| 14 | Enclosure Protection Class | IP3X, IP4X | |||
| 15 | Tank Protection Class | IP67 | |||
