SHENZHEN CENTER POWER TECH CO., LTD
Address: Rooms 9-12, 7F, Block B, Building 7, Zone 2, Shenzhen Bay Technological and
Ecological Park, Nanshan District, Shenzhen, China
Tel: 0755-66851118 Fax: 0755-66850678 Email: sales@vision-batt.com
Green Our Earth Power Your Vision
10.6.10 Dry contact connection
In order to provide or accept quick response fault/danger protection actions, our REVO system
provides 1 input dry contact I1 and 3 output dry contact D1 D2 D3. Its fault input and output dry
contacts are shown in the figure below
DO dry contact is passive dry contact, normally open in normal state. I1 dry contact can be
defined as EPO, and dry contact fault is defined as factory mode by default. Please refer to
relevant documents of our company.
Figure 10.6-34 Dry contact defines
Dry Contact definition
Table 10.6-1 Dry Contact
When Normally fully charged battery voltage> 3.38V* total number of cells in a single
battery cabinet & total current <1.5% of the current sensor ,also when battery high
temperature prohibit charging, the D1 dry contact will turn from open to close to let UPS
know that charging should be stopped.
1. the number of CBMs with undervoltage level I protection, over temperature protection,
low temperature first protection, BMU communication fault level I protection, discharge
overcurrent level I protection and self test failure is greater than the redundancy .
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