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This renewable intertie solution offers transformer protection and mitigates inrush currents and resulting voltage drop to improve reliability and power quality while interconnecting DERs.
The Southern States TranSwitcher® is engineered to protect power transformers and mitigate inrush currents and resulting voltage drop during energization — especially in distribution systems that intertie with solar/ battery farms and other distributed energy resources (DERs). By introducing a “soft close” using resistive elements, the TranSwitcher® reduces inrush currents, mitigates voltage dips, and helps avoid ferroresonance events that can impact DER integration.
Designed to extend transformer life and improve power quality, the TranSwitcher® combines long-life vacuum interrupters, solid insulation, and built-in voltage sensing in a compact, field-ready form factor. It’s available in pole-mount or pad-mount configurations for seamless deployment in both new and retrofit applications.
| Rating Type | Ratings | ||
|---|---|---|---|
| Maximum Voltage (kV) | 15.5 | 27 | 38 |
| Continuous Current (A) | 630 | ||
| Rated Frequency (Hz) | 50 / 60 | ||
| Basic Insulation Level (kV) | 110 | 150 | 170 |
| Optional Symmetrical Interrupting Current (kA) | 16 | 12.5 | 12.5 * |
| Asymmetric Peak Making Current (kA) | 40 | 32.5 | 32.5 * |
| 60 Hertz Withstand Voltage (kV): | |||
| Dry, One Minute | 50 | 60 | 70 |
| Wet, Ten Seconds | 45 | 50 | 60 |
| Creepage Distances (mm / in): | |||
| Terminal to Terminal | 673 / 26.5 | 876 / 34.5 | 1160 / 45.7 |
| Lower Terminal to Ground | 679 / 26.7 | 938 / 36.8 | 1500 / 59.0 |
| IEC Pollution Class Terminal to Ground | Very Heavy | ||
| Mechanical Life (Close / Open Operations) | 10,000 | ||
| Ambient Temperature (OC) | -40 to +60 | ||
