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Summary of Contents for Woodward BU1-DC2
- Page 1 BU1-DC2 – DC Voltage Relay Manual BU1-DC2 (Revision A)
- Page 2 Woodward Manual BU1-DC2 GB DOK-TD-BU1-DC2E Rev.A...
- Page 3 Manual BU1-DC2 GB Woodward Woodward Governor Company reserves the right to update any portion of this publication at any time. Information provided by Woodward Governor Company is believed to be correct and reliable. However, no responsibility is as- sumed by Woodward Governor Company unless otherwise expressly undertaken.
- Page 4 Supervision of DC voltages Function Unit BU1-DC2 is equipped with an over- (U>) and undervoltage supervision (U<) with separate ad- justable pick-up values and common trip delay (t) and hysteresis (DIFF). The DC voltage measured is constantly compared with the set reference values. Any voltage sig- nal, which exceeds the set reference value for overvoltage, or falls below the set reference value for undervoltage, will cause the respective relay to trip after elaps of the time delay.
- Page 5 Woodward Figure 1: Front plate Unit BU1-DC2 is designed to be fastened onto a DIN-rail acc. to DIN EN 50022, same as all units of the BASIC LINE. The front plate of the unit is protected with a sealable transparent cover (IP40).
- Page 6 Woodward Manual BU1-DC2 GB Auxiliary voltage supply Unit BU1-DC2 needs no separate auxiliary voltage supply. The supply voltage can be formed di- rectly from the measuring quantity. Figure 3: Connection diagram Figure 4: Contact positions DOK-TD-BU1-DC2E Rev.A...
- Page 7 Manual BU1-DC2 GB Woodward Connecting terminals The connection up to a maximum of 2 x 2.5 s mm cross-section conductors is possible. For this procedure the transparent cover of the unit has to be removed. Setting ranges U<: 0.7 - 1.1 Un U>:...
- Page 8 Woodward Manual BU1-DC2 GB Woodward Kempen GmbH Krefelder Weg 47 ⋅ D – 47906 Kempen (Germany) Postfach 10 07 55 (P.O.Box) ⋅ D – 47884 Kempen (Germany) Phone: +49 (0) 21 52 145 1 Internet www.woodward.com Sales Phone: +49 (0) 21 52 145 216 or 342 ⋅ Telefax: +49 (0) 21 52 145 354 e-mail: salesEMEA_PGD@woodward.com...
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