Additional Information
Designed for Ease of Installation
The Mini Power-Zone Unit Substation has a unique two-part construction that provides installation flexibility. This two-part construction uses removable transformers, available from factory stock, which can be replaced without disturbing external panelboard wiring. The transformer and panelboard can be mounted one part at a time if there is a space or handling problem.
The panelboard can be removed and wired first, if desired. The transformer mounts on top of the panelboard, and the primary and secondary leads are reconnected to the main circuit breakers.
All sizes are carried in Schneider Electric warehouse system stock. Each comes complete with the transformer and the main primary and secondary circuit breakers, all sized in accordance with NEC requirements. Branch circuit breakers are supplied separately.
Replacement Transformers and Interiors
| Phase | kVA | Catalog Number * | ||
|---|---|---|---|---|
| Transformer * | Interior | |||
| Load Center | Panelboard | |||
| 1 | 3 | MPT3S40F | QON12CCI | NQM18L1C |
| 5 | MPT5S40F | |||
| 7.5 | MPT7S40F | |||
| 10 | MPT10S40F | |||
| 15 | MPF1540F | QON30CCI | NQM30L2C | |
| 25 | MPF2540F | |||
| 3 | 15 | MPF15T2F | QON330L200 | NQM430L1C |
| 22.5 | MPF22T2F | |||
| 30 | MPF30T2F | |||
Solar Photovoltaic Systems
The output of a photovoltaic (PV) interactive inverter can be connected to either the line or load side of an electric power production and distribution network, such as a utility service, based on the system design and the requirements found in the NEC. Mini Power-Zone units are ideal where voltage transformation is needed. The units include both primary and secondary overcurrent protective devices along with panelboard mounted devices for each inverter output. Contact a local Schneider Electric representative for specific application assistance on using Mini Power-Zone units in PV systems.
For PV applications, the Mini Power-Zone unit will have sources connected to both sides. The NEC overcurrent protection rules limit both the Main (primary) circuit breaker and the secondary circuit breaker to 125% of the rated current. The limits for primary circuit breakers at 480 V are listed in the following table: