Portable Battery Powered EFI Test Unit
 Earth Fault Passage Indicators on high voltage cable networks are an extremely effective means of fault localisation. However, the benefits derived from the use of such devices are entirely dependant on their correct operation under fault conditions.
The Bowden Earth Fault Indicator Tester (EFI Tester) is a battery powered portable instrument that permits a quick and easy method of testing on site ALL TYPES of EFI’s mounted on core balance CT's
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Features
- INTERNAL BATTERY POWER USING RECHARGEABLE BATTERIES
- 2500 (NOMINAL) TESTS BETWEEN EACH BATTERY CHARGING PERIOD
- IMPROVED OUTPUT PER TURN - NOW 10 AMPS
- 100 MILLISECOND CURRENT TEST PULSE OR CONTINUOUS OUTPUT
Benefits
- Comp[act and Portable
- No Local LV supply needed
- Tests all EFI Installations using core balance CT's
Description
The EFI Tester is a light-weight, self-contained portable instrument enclosed in a tough black ABS carry case.
Within the case is a matt black front control panel, test facilities and silk screen printed operating instructions.
The controls on the front panel include an LED indicator for RECHARGE BATTERY and a battery charge connection facility. The rechargeable battery LED indicator will automatically illuminate when the battery power has fallen to a minimum level and the battery requires recharging.
There are test lead output terminals and two test buttons. The green button offers a test current of 5 cycles duration and the red a continuous current flow of 10 Amps which can be measured by a clamp meter.
The foam lid secures the output cable and spare fuses.
Each operation of the green PRESS FOR TEST button produces a preset number of 50 Hz output current cycles at precisely 10 Amps RMS.
The number of 50 Hz output cycles can be factory pre-set from 1 to 255. The standard setting is 5 cycles (100mS).
Operation
Earth Fault Indicators can be tested in 10 Amp increments by passing multiple turns of the output cable through the EFI Current Transformer. For example 4 turns for 40 Amps.
The PRESS FOR TEST button is inhibited for 1 second after each operation.
The output current can be made continuous by depressing the red CONTINUOUS button, prior to pressing the Green PRESS FOR TEST button, and then holding the CONTINUOUS button depressed for as long as required. This may be used, for example, to check the Tester output current with a clamp meter.
N.B. Extended use of this feature will reduce the time before the batteries require recharging.
The front panel LED indicator verifies OUTPUT current operation. This indicator will illuminate for a minimum of 1 second when output current is generated.
The front panel LED indicates the need to RECHARGE BATTERY.
Specification
 Output Current:- 10 Amps RMS +1-- 5%
Output Frequency:- 50 Hz +1-- 2%
Output Cycles / Shot:- 5 (1-255 option)
Batteries (internal):- 2 x 6V 2.6Ah rechargeable
Recharge Interval (typical):- 2500 shots
Charge at:- 1 3.8V constant voltage
(Charger supplied separately)
Only a constant voltage battery charger suitable for use with sealed lead acid batteries must be used. The use of other chargers may damage the battery.
Output Cable -- Only cable supplied:- 4 metres (resistance <0.1 R)
with unit to be used
Weight:- 3Kg
Dimensions:- 34 x 26 x 10cm
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