Bray BBU - Specifications

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Battery Backup Unit (BBU) — Installation & Maintenance Manual Continued
All information herein is proprietary, confidential, and may not be copied or reproduced without the expressed written consent of BRAY INTERNATIONAL, Inc.
The technical data herein is for general information only. Product suitability should be based solely upon customer’s detailed knowledge and experience with their application.
The right to change or modify product design or product without prior notice is reserved.
Battery Backup Unit (BBU) 24V Specifications
Power Requirements 24-27VAC or 30-38VDC (the minimum voltage is required to provide proper battery charging)
Use dedicated Class 2 non-bonded transformer rated 100VA per BBU
Power Output BBU output with 24VAC supply is 30-38 VDC
On failure of AC supply, battery output is 24-25.5 VDC
BBU will provide fail open or fail close operation
Battery Monitoring Local LED indicator and voltage free 2-wire normally open contact for remote monitoring
Battery Conservation Automatically shuts-o batteries after one minute or when actuator stops
Current Draw @ 24 VAC BBU only maximum 120mA standby (0.25 VA) Max. 420mA charging (10 VA)
Current Draw of 600 lb-in - 1.9A (with load)
Actuator with BBU 2,000 lb-in - 2.7A (with load)
5,000 lb-in - 4.1A (with load)
Power Protection Two 5 amp, 250V fast blow, 5x20mm fuses, one for the external power output circuit and
the other for the battery output circuit
Operating Temperature -4ºF (-20ºC) to 122ºF (50ºC) LED light may not function below -20ºF (-29°C)
Housing Die Cast Aluminium, Polyester finish, Nema 4X (IP 65)
Exposed Fasteners Stainless Steel
Batteries (2) 12 volt 1.4 ampere-hour (AH) rechargeable sealed lead acid battery wired in series
Features Valve regulated, spill proof construction allows safe operation in any position
Rugged impact resistant ABS case and cover (UL94-HB)
U.L. Recognized under le number MH 20845
Specications Battery Case: ABS plastic
Maximum discharge current (7 minutes): 4.2 amperes
4 years, depended on ambient Temperature
Shelf Life (% of nominal capacity at 68ºF (20ºC)
1 month = 97%
3 months = 91%
6 months = 83%
Operating Temperature Charge: -4ºF to 122ºF (-20ºC to 50ºC)
Discharge: -40ºF to 140ºF (-40ºC to 60ºC)
Storage: -40 to 140˚F (-40 to 60˚C)
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The BBU should be powered up for a minimum of 12 hours
CONSTRUCTION AND PERFORMANCE
Wiring
BATTERY SPECIFICATIONS
1
Leaving the battery in an unpowered state for long periods at ambient temperatures greater than 40˚F will result in excessive battery drain.
Conduit Entries (2) - 3/4” NPT Terminal Block - 14 to 24 AWG.
Size wires per NEC guidelines with respect to distance and current draw.
Max Distance Between Actuator
and Supply(ft)
Torque(in-lbs) 600 2000 5000
I
load
(Amps) 1.8 2.0 3.0
8 Ga 873 785 524
10 Ga 549 494 329
12 Ga 345 311 207
14 Ga 217 195 130
16 Ga 137 123 82
18 Ga 86 77 52