Atec T-R-750ADM - Manual (Page 2)

Note: Due to the company’s continuous research programme, the information above may change at any time without prior notifica tion. Please check that you have the most recent data on the product.
T&R Test Equipment Ltd, 15-16 Woodbridge Meadows, Guildford, Surrey, GU1 1BJ, UK
Tel: +44 (0)1483 207428 Fax: +44 (0)1483 511229 email: [email protected]
www.trtest.com
Main Output
The main output on the unit has two taps, allowing the selection
of output voltages up to 16V and output currents up to 750A.
The unit operates at slightly reduced ratings when operating from
a 115V supply.
750ADM 750ADM-H
115V 230V 115V 230V
Open circuit voltage 2.5V 3.5V 3.5V 5.0V
Voltage at 500A 1.9V 2.8V 2.8V 4V
Continuous current 125A 125A 125A 125A
5 min on 250A 250A 250A 250A
1 min on 500A 500A 440A 500A
Max current 750A 750A 500A 750A
Max current on time 10s 30s 10s 20s
Open circuit voltage 10V 16V 10V 16V
Full load voltage 7.5V 10V 7.5V 10V
Continuous current 10A 10A 10A 10A
1 min on 40A 40A 40A 40A
Metering
The output is metered by a digital true RMS system with a
memory ammeter - whenever the output is switched off, the
current reading is held on the display.
Range Resolution Trip current Accuracy Capture time
20.00A 0.01A 21A ±0.5%rdg+5d 20ms
50.00A 0.01A 53A ±0.5%rdg+5d 20ms
200.0A 0.1A 210A ±0.5%rdg+5d 20ms
750A 1A 788A ±0.5%rdg+2d 20ms
A current trip is automatically set to 105% of full scale of the
selected metering range to protect the device under test.
Timing System
Range 0-999.999s/9999.99s/99999.9s auto-ranging
Resolution 1ms/10ms/100ms
Accuracy ±0.01%rdg+2d (all modes except current operated)
±0.01%rdg+4d (current operated mode)
The contact circuits have an open circuit voltage of 24Vdc and a
short circuit current of 20mA. Each contact circuit will auto-
select for normally open or normally closed contacts. A DC
voltage of 24-240Vdc may also be used to trigger either timer
channel.
The following functions are provided:
Mode Timer Start Timer Stop
Off Timer inactive Timer inactive
Internal start Press ‘ON’ Contact 1
Single contact Contact 1 Contact 1
Dual contact Contact 1 Contact 2
Current operated Current > 20% Current < 20%
of range of range
The output is automatically switched off at the end of the test to
safeguard the relay under test.
RS232
An RS232 port is provided to allow connection to a PC or a
printer. ADMlog software is available as an optional extra to log
results from the 750ADM and transfer them to a spreadsheet.
T&R Link
The T&R Link allows a T&R DVS3 mk2 voltage source to phase
lock to the 750ADM current.
Supply Requirements
Auto-selecting 750ADM 750ADM-H
115V±10% 50/60Hz 1ph 2000VA max 1900VA max
230V±10% 50/60Hz 1ph 3000VA max 3900VA max
Temperature Range
Storage -20°C to 60°C Operating 0°C to 45°C
Dimensions Weight
380mm x 314mm x 221mm 21.5kg (750ADM) 23.5kg (750ADM-H)
Accessories
Operating manual, mains lead, spare fuse set and carrying strap.
Optional 750ADM-AL Lead Set specifications
A range of output leads are available to complement the
750ADM. The standard 750ADM-AL lead set is 3m long,
recommended for use with a 230V Supply. A 1.5m lead set is
also available, and is recommended when operating from a 115V
supply. The leads consist of double insulated 95mm
2 welding
cable terminated in Dinse high current connectors
at the 750ADM end and
high current welding
clamps at the load
end.
Low current timer
leads are also included
with the lead set:
The 3m lead set weighs 9.8kg including high current leads, timer
leads and case.
Protection and Safety
The unit is protected by electronic over current and thermal trips
on the outputs, and circuit breakers on the input and power
circuit. An earth terminal is provided for connection to a local
earth when testing in a substation environment. The unit is
designed to comply with BSEN61010, and is CE
marked.
750ADM mk2/750ADM-H mk2 Specification
750ADM mk2 Data sheet rev 0 16/09/09
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The standard 750ADM is supplied
in an aluminium case. It is also
optionally available mounted in a
Pelicase with space for leads.