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Ulusoy HMH Series medium voltage switchgears are designed for use in secondary distribution systems up to 36 kV, in compact kiosk type transformer substations, in industrial facilities and indoor spaces. All functional units can be easily installed side by side. The metal enclosed switchgears are produced in the factory with all routine and type tests conducted and can be commissioned in a very short period – practically and safely. HMH Series modular switchgears can be easily and safely used in kiosk type transformer substations due to their compact and minimized dimension.
Highly flexible
User friendly
Reliable and safe in operation
Reach out to us and find the ideal solution for your project!
HMH Series Switchgear is designed as a modular structure. The switchboard cubicles are manufactured from 2mm hot-dip galvanized sheet metal with a density of thickness of 275gr/m² galvanise, which is above the industry standards. No deformation will occur, even under the dampest mediums.
The basic interlocking system of the HMH series modular switchgear is easy to operate. The door, load break switch and earthing switch are connected - ensuring the safety of the operation staff.
| Type | HMH 12 | HMH 24 | HMH 36 | |
|---|---|---|---|---|
| Rated voltage | kV | 12 | 24 | 36 |
| Rated network frequency withstand voltage (1min) | kV | 28 | 50 | 70 |
| Open position between the contacts | kV | 32 | 60 | 80 |
| Rated lightning impulse withstand voltage | kV | 75 | 125 | 170 |
| Open position between the contacts | kV | 85 | 145 | 195 |
| Rated frequency | Hz | 50, 60 | 50, 60 | 50 |
| Rated current | A | 630-1250 | 630-1250 | 630-1250 |
| Rated peak withstand current | kA | 40, 62, 5 | 40, 62, 5 | 40, 62, 5 |
| Rated short-term withstand current (1s) | kA | 16, 25 | 16, 25 | 16, 25 |
| Mechanical class | E1 M1 C2 | E1 M1 C2 | E1 M1 C2 | |
| Protection class | IP3X | IP3X | IP3X | |
| Internal arc class | AFL | AFL | AFL | |
| Accessibility class | LSC2A-PI | LSC2A-PI | LSC2A-PI | |
| Type | HMH 12 | HMH 24 | HMH 36 | |
|---|---|---|---|---|
| Dimension | mm | 360 | 510 | 610 |
| Impact pin force | middle | middle | middle | |
| Type | HMH 12 | HMH 24 | HMH 36 | |
|---|---|---|---|---|
| Nominal short circuit breaking current (load factor) | 1s - kA | 16 | 16 | 16 |
| Nominal short circuit closing current (peak) | kA | 16-40 | 16-40 |
16-40 |
| Earthing switch (ESH 36-02) | kV | 12 | 24 | 36 |
| Nominal short circuit breaking current (1s) | kA | 1 | 1 | 1 |
| Nominal short circuit closing current | kA | 2.5 | 2.5 | 2.5 |
Ulusoy HMH production facilities comply with the following standards:
