DPU40D-N06A3, DBU20B-N12A3, and
DBU50B-N12A1 Distributed Power System
User Manual
A Technical Specifications
Issue 04 (2020-02-29)
Copyright © Huawei Technologies Co., Ltd.
56
A
Technical Specifications
Table A-1
Environment specifications
Item
Specifications
Operating
environment
Class C
Operating
temperature
DPU40D-N06A3, DBU20B-N12A3 and DBU50B-N12A1:
With solar radiation: –40°C to +50°C
Without solar radiation: –40°C to +55°C
Storage
temperature
DPU40D-N06A3: –40°C to +70°C
DBU20B-N12A3 and DBU50B-N12A1: –40°C to +60°C
Operating
humidity
5%-95% RH (non-condensing)
Storage humidity
5%-95% RH (non-condensing)
Altitude
DPU40D-N06A3, DBU20B-N12A3 and DBU50B-N12A1: –60 m to
4000 m (When the altitude ranges from 2000 m to 4000 m, high
temperature derating applies and the operating temperature decreases
by 1°C for each additional 200 m.)
Class C environments refer to sea environments or outdoor land environments (with simple shielding
measures) near pollution sources. If a site is near a pollution source, it is at most 3.7 km away from salt
water, such as the sea and salt lakes, 3 km away from heavy pollution sources, such as smelteries, coal
mines, and thermal power plants, 2 km away from medium pollution sources, such as chemical, rubber,
and galvanization industries, or 1 km away from light pollution sources, such as packing houses,
tanneries, and boiler rooms.
Table A-2
DPU40D-N06A3 specifications
Item
Specifications
Dimensions (H x
W x D)
420 mm x 60 mm x 300 mm (excluding the terminal)
