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MNS R main low voltage distribution switchgear with rear access was designed for use in large electrical installations such as those in petrochemical plants, steel works, rolling mills, power stations, oil rigs, ships, etc. The service conditions in these plants are often extremely severe: the high currents involved and effective short-circuit levels require high performance switchgear.
In addition, safe conditions for the personnel, service continuity, easy inspection, maintenance, construction and installation must also be guaranteed. Simply installed extensions and compact overall dimensions are a must.
MNS R Power Center switchgear fully complies with all these requirements. But that's not all. Since it integrates perfectly into all the latest generation ABB apparatus, compliance with all market requirements is guaranteed.
Environmental conditions
The switchgear ratings are guaranteed under the following environmental conditions:
| Minimum ambient temperature |
|
-5 °C |
| Maximum ambient temperature |
|
+40 °C |
| Maximum relative humidity |
|
95% |
| Maximum altitude |
|
2000 m |
Technical Data
Standards and Testing
| Verification by testing |
IEC 60439-1, IEC61439-1/-2, EN60439-1, CEI 60439-1 |
| Test Certificates |
ABB SACE, ACAE LOVAG, SINAL, Cesi and Ismes |
Electrical Data
| Rated insulation voltage Ui |
V AC / V DC |
1000 / 1500 |
| Rated operating voltage Ue |
V AC / V DC |
690 / 750 |
| Rated impulse withstand voltage Uimp |
kV |
Up to 12kV |
| Overvoltage category |
|
II / III / IV |
| Degree of pollution |
No. |
3 |
| Rated frequency |
Hz |
50 - 60 |
| Rated current Ie |
A |
Up to 8000 |
| Rated peak withstand current Ipk |
kA |
Up to 330 |
| Rated short-time withstand current Icw |
kA |
Up to 150 |
| Rated current Ie |
A |
Up to 4000 |
| Rated peak withstand current Ipk |
kA |
Up to 264 |
| Rated short-time withstand current Icw |
kA |
Up to 120 |
Arc Proof
| Tested according IEC 61641 |
75 kA, 0.5 s at 690 V |
| |
100 kA, 0.3 s at 415 V |