Relay Engineering Services Limited
625 East Bunker Court Vernon Hills, IL 60061-1844 Toll-free: 800-358-5525
Overview
Operation
Why Perform Automatic Testing?
Software Overview
System Concept
Specifications
Nominal V
Max I
24
100
48
100
110
100
220
50
www.relayeng.com
Power Systems Protection Test Equipment
BTS Battery Discharge Test Set
The BTS is an automatic battery discharge test set designed to
enable unattended discharge tests to be performed on standby
batteries. It is widely acknowledged that a capacity test as
performed by a controlled const ant c urrent dis charge gives the best
indication as to the health of a standby battery and its ability to
perform to its spec i fication.
• Tests all batteries from 24 to 240 V
• Regulated constant current during entire test
• Up to 100 A discharge current
• Performs tests from 3 mins to 10 hours
• Unattended operation
• Non-volatile data logging voltmeter
• 10 second data record rate
•
Programmable alarm outputs
The BTS is essentially a microprocessor controlled solid-state
electronic load bank together with a non-volatile data-logging
voltmeter. The dis charge current is continually monitored and the
load bank automatical ly adjusted so as to maint ain the discharge
current constant.
A test is performed by entering on a PC the discharge current,
discharge time, m inimum allowable batt ery voltage and the voltage
measurement record rate. Alarm settings c an also be entered, the
alarm outputs being connected into the local alarm scheme to
notify the operator if attendanc e is necessary. Once the test has
been initiated by the PC, the PC can be disconnected and the
discharge unit will perform t he t est with no operator involvement. As
the battery voltage falls during the discharge the unit adjust s the
load on the battery such that the di scharge current is maintained
constant. The disc harge continues until t he time lim it is reached or
the battery voltage drops below that previously entered as the
minimum. When the test has f inished the PC can be reconnected
and the results, stored during the test in the discharge unit,
downloaded to the PC for subsequent analysi s .
Compliance with quality management systems like ISO9000
requires documentary evidence that all essential plant and
equipment (i.e. batt eries) are performing to specific ation. The BTS
can facilitate this process by generating the required
documentation.
The simple-to-use results arc hiving software supplied with the BTS
permits even technician-level staff to perform and automatically
document a battery dis c harge test.
• Alphanumeric and graphical pres ent ation of results
• Full results archiving, di splay and printing facilities
• Fully Automatic or Manual testing
• Error and Trend analysis of test results
• Results transfer to other Windows applicati ons
• Test templates al l ows rapid test set up
• Full traceability of resul ts to test set hardware, sof t ware
and calibration data
• Full on line context sensit i ve hel p / operating manual
A free evaluation version of the BTS software can be downloaded
www.relayeng.com.
from
Discharge Ratings
Absolute Max Voltage 280 V Discharge Current Accuracy
0.5% or better regulation to set value
0.1 A Resolution
Discharge Time
3 minutes to 10 hours under software control
Contact Out
4x contact outputs, Rated 10 A @ 250 VAC / 1 A @
120 VDC
Individually programmable t o operat e/release at set
battery/voltmeter voltages
Voltmeter #1 (Battery Terminal Voltage)
30, 150, and 300 Volt ranges - auto sel ected 10 second record rate, 0.5% bas i c accuracy.
Voltmeter #2 (Uncomm i t ted, floating)
30, 150, and 300 Volt ranges - user selected 10 second record rate, 0.5% bas i c accuracy.
Input Power
Fully auto universal input: 90 t o 260 V 45 to 65 Hz AC
or DC
100 W, Electronic Active P ower Fact or Correc tion
Miscellaneous
Battery/Contact Out/ V ol tmeter connections are
galvanically isolated from each other and chassis.
Protections
Multipoint temperature, overpower & out-of-regulation
monitoring with software shutdown. Reverse polarity
protection.
Interfaces
Isolated RS-232 interface
Parallel interface for control from PC printer port
37-way expansion connector with 16 in+ 16 out TTL lines
plus analog in and analog out.
Physical
510 x 270 x 520 mm, 28.5kg.
Environmental
0 to 45°C Operating Temperature
CE Marked, Tested to EN50081-2 (emi ssions) &
EN50082-2 (susceptibility)
Fax: 800-433-9971 E-mail: info@davis.com www.davis.com
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