Issue:
Floor-mounted Maintenance Bypass Cabinet landing points require clarification when referring to the power cables installation in the UPS and in the MBC.
Product line:
Galaxy VS UPS
Environment:
Galaxy VS UPS for External batteries from 10-40 kW at 208V and 20-80 at 480V
Galaxy VS UPS with Internal Batteries from 10-25 kW at 208 V and 20-50 kW at 480 V
GVSBPSU80G
Cause:
Customers might have issues trying to land cables in the correct busbar/breaker
Resolution:
GVSBPSU80G is compatible with the following Galaxy VS models
| External Batteries | Internal Batteries | ||
| 208 V | 480 V | 208 V | 480 V |
| GVSUPS10KFS | GVSUPS20KGS | GVSUPS10KB4FS | GVSUPS20KB4GS |
| GVSUPS15KFS | GVSUPS30KGS | GVSUPS15KB4FS | GVSUPS30KB4GS |
| GVSUPS20KFS | GVSUPS40KGS | GVSUPS20KB4FS | GVSUPS40KB4GS |
| GVSUPS25KFS | GVSUPS50KGS | GVSUPS25KB4FS | GVSUPS50KB4GS |
| GVSUPS30KFS | GVSUPS60KGS | ||
| GVSUPS40KFS | GVSUPS80KGS | ||
Safety Disclaimer
This guide is intended for qualified electrical installers only.
All installations must comply with local electrical codes and Schneider Electric installation manuals. Schneider Electric assumes no liability for improper installation
Installation Guidelines
Connect External Cabling
Picture 1: Electrical diagram of a Galaxy VS with Internal batteries at 480V with a Maintenance Bypass Cabinet floor floor-mounted.
Picture 2: Left Side View of the Maintenance Bypass Cabinet - Single Mains
1. Please, refer to the Connect the Power Cables in a 10-80 kW Top Cable Entry System in the installation manual
2. Identify the Input and Load Busbars in the MBC
3. Land the Utility Source Cables in the Input (L1, L2, L3) busbars in the MBC. This busbar feeds the Unit Input Disconnect Device (UIB) and the Maintenance Bypass Disconnect Device (MBB), as shown in Picture 1.
4. Land the UPS Load Cables in the Load (L1, L2, L3) Busbars in the MBC. This busbar feeds the equipment that the UPS will back up, labeled UPS Output in Picture 1.
Connect UPS and MBC internal Cabling
Picture 3: Maintenance Bypass Cabinet without Conduit Box - Front view
Picture 4: UPS Busbar Section - Front view*
1. The cables coming out from UIB (Picture 3) go to the UPS Input busbars in the UPS Cabinet. (Picture 4)
2. The cables coming into UOB (Picture 3) come from the UPS Output busbars in the UPS Cabinet. (Picture 4)
*The UPS busbars distribution shown in picture 4 belongs to a Galaxy VS UPS for External Batteries; the busbar distribution may vary depending on the Galaxy VS model installed, but the instructions are similar.
Important Notes
- Routing: Power cables between UPS and MBC can be routed directly only for UPS with External Batteries. For Internal Batteries, a Conduit Box is required.
- Dual Mains Systems: UIB becomes SSIB (Static Bypass Switch Disconnect Device) and will be fed by the Bypass Source. Remove jumpers between the input and bypass busbars in UPS cabinet. Check the applicable sections for Dual Mains in the adequate UPS Manual.
- Always follow official installation manuals.
Useful documentation
Galaxy VS UPS with Up to 2 Internal Battery Strings – Installation
Galaxy VS UPS with Up to 4 Internal Battery Strings – Installation
Galaxy VS UPS for External Batteries – Installation
Galaxy VS Maintenance Bypass Cabinet GVSBPSU150G, GVSBPSU80G – Installation
