Ulusoy Electric HMH series metal enclosed modular switchgear are medium voltage switchgear designed by our expert staff of engineers for use in secondary distribution systems of up to 36 kV, in kiosk-type or conventional substations as well as industrial premises for indoor use, and are manufactured in compliance with IEC standards. All type tests are completed in international accredited laboratories (KEMA, etc.) and routine tests are also carried out at our factory. Ulusoy Electric air insulated metal enclosed modular switchgear can safely be commissioned and put in service in a very short time.
| Type | HMH 12 | HMH 24 | HMH 36 |
|---|---|---|---|
| Rated Voltage | 12 kV | 24 kV | 36 kV |
| Network Frequency Withstand Voltage 1min | 28 kV | 50 kV | 70 kV |
| Clearance | 32 kV | 60 kV | 80 kV |
| Lightning Impulse Withstand Voltage (1.2/50 µsec) | 75 kV | 125 kV | 170 kV |
| Clearance | 85 kV | 145 kV | 195 kV |
| Rated Frequency | 50/60 Hz | 50/60 Hz | 50/60 Hz |
| Rated Current | 630-1250 A | 630-1250 A | 630-1250 A |
| Rated Short Circuit Withstand Current (1sec)(3sec) | 16-20-25 kA | 16-20-25 kA | 16-20-25 kA |
| Rated Short Circuit Closing Current | 50 kA-tepe | 40 kA-tepe | 40 kA-tepe |
