Technical Specifications for DC Load Bank
Applications:
The fully automatic load banks (dummy load) specifically required for acceptance testing,
discharge testing, battery capacity testing, battery maintenance, engineering examination
and other testing for DC power with load or testing of power sources such as rectifiers, battery
chargers, uninterrupted power systems or generators. With automatic and manual modes
controlled variable loads, the load banks assist in the stimulation of actual loads to test and
prove the design, performance and the capacity of the system.
This load bank should be either stationary or mobile type, for DC load testing applications, at
rated current up to 600 A , and voltage up to 48 VDC.
The vendor should be supply his offer including technical details which describe manual
incremental load steps
Operating Environment:
Temp : 0 – 40 °C
General specifications :
- .the load bank should be portable, durable, economic, safe, easy-to-use and come
complete with Data View software, provided with a complete data management and
analysis program.
- it should allow the user to evaluate the health of each cell and replace only the cells that
require replacement - saving time and money by significantly reducing labor hours and
replacement costs.
- Full accessibility to components.
Technical Specification:
1- ratings :
Input Ac ratings : 220 Vac(phase to neutral) 50 Hz or 380 Vac (phase to phase) 50 Hz.
Dc ratings variety : (2V – 48 VDC )as industries standards , Up to 600 Amp DC Load Bank.
2- Custom solutions should be available. Supported industries include utilities,
telecommunications, UPS, motive power.
3- the load bank should adapts with multi-types of dry- VRLA, VLA and flooded- lead acid
batteries.
4-It should be Able to charge/discharge single and multi-cell batteries.
5- Controling, measuring , monitoring and displaying specifications should be determined
as following :
-
Load bank management should be a Microprocessor controlled with a trusted
Software( Simple and fast for updating) and provided with pc connection
port(computer interface) and cable.
- The included software should allow the user to create customized reports with company
name, contact, testing location, battery manufacturer, model number, number of cells, and
more. The reports should provides the test criteria, list of weakest cells, graph of weakest
cells, string information, individual cell information, time stamping, suitable resolution
discharging graphs and an area to add notes. Also , the software should test data
analyzing and report printing .
- all operation data, measurements and alarms(with audio) should be clearly displayed in a
high quality digital LCD screen and easy to read.
- operation and protection process should control by management system.
- alarms and warning info, dynamic discharge and static discharge data auto-saving.
- measurement readings accuracy: Discharge Current: not mor than 1%
Voltage: not mor than 0.8%
7- Protecting requirements :
Load bank should be provided with :
- Fuses or circuit breakers protection devices for each variable load circuit , control circuit ,
cooling circuit and other necessary components .
- battery isolation of each load circuit via continuously rated DC contactors.
- automatic battery voltage selection to eliminate user fault or incorrect operations .
- Auto stop on time and battery voltage to protect battery from deep of discharge.
- high-voltage protection.
8- Cooling type: Air cooled (preferred).
Accessories and documentations required
- software CD and interface cable should be provided per each unit.
- the vendor should mention all unit accessories ( cables ,….ect) on his offer.
- oprating , maintenance manuals should be provided per each unit.
- Also , software manual should be provided per each unit.
- electrical and control circuits diagrams should be provided per each unit