Atec T-R-50A-3PH - Manual (Page 2)

Main Output
The main output on the unit has two taps, allowing the selection
of output voltages up to 18V and output currents up to 50A.
Range Continuous 5 minutes 1 minute
3.5V 16A 32A 50A
18V 4A 8A 12A
The above intermittent on times must be followed by an off time
of 15 minutes, and are based on an ambient temperature of 25°C.
Metering
The output is metered by a digital true RMS system with a
memory ammeter - whenever the timer stops and the output is
switched off, the current reading is held on the display. The
currents for each phase are displayed simultaneously.
Range Resolution Trip current Accuracy
5.000A 0.001A 5.25A ±0.6%rdg+5d
20.00A 0.01A 21A ±0.6%rdg+5d
50.00A 0.01A 52.5A ±0.6%rdg+5d
A current trip is automatically set to 105% of full scale of the
current metering range to protect the device under test.
Auxiliary Metering Inputs
An auxiliary metering input is provided which is able to measure
RMS voltage or current. In addition the frequency of the external
input may be measured, and the phase measured between any
of the phase outputs and the auxiliary metering input.
Setting Range Resolution Accuracy
Volts ac 270.0V 0.1V ±0.7%rdg+5d
Amps ac 5.000A 1mA ±0.7%rdg+5d
Phase ±180° 0.1° ±3°
Frequency 20-1000Hz 0.1Hz ±0.2%rdg+1d
The current input is protected by a F6.3A fuse.
Auxiliary Output
A single phase isolated 110Vac 300mA/220Vac 150mA auxiliary
output is provided on the 50A-3PH.
Lead Set Specifications
The 50A-3PH is supplied with a lead set in a plastic case including:
6 x 3m 4mm 2 output leads terminated in 4mm plugs.
2x3m, 2x0.5m 2.5mm 2 auxiliary leads terminated in 4mm plugs
Supply Requirements
The supply voltage requirements for the unit must be specified at
the time of ordering. The unit is available for operation from
either a 400V 4 wire 3p supply or 220V 3 wire 3p supply. The
optional delta-star supply transformer allows the 400V unit to
operate from other supply voltages.
Supply option 1: 400V-10%+14% 50/60Hz 3ph 1000VA
Supply option 2: 220V-6%+14% 50/60Hz 3ph 1000VA
RS232 and T&R Link
An RS232 port is provided to allow connection of a printer or PC
and the T&R link output provides a phase lock reference for a
DVS3 phase-shifting voltage source.
Timing System
Range 0-999.999s Resolution 1ms
Accuracy 0.01%rdg+2d (+4d current operated mode)
The contact circuit has 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 output is automatically switched off at the end of
the test to safeguard the relay under test.
The following functions are provided:
Mode Timer Start Timer Stop
Internal start Press ‘ON’ Contact 1
Single contact Contact 1 Contact 1
Dual contact Contact 1 Contact 2
Current operated Current > 10% Current < 10%
of range of range
Pulse mode is used for setting the current level in devices
sensitive to heating, and allows current to be injected for 600ms
and the current recorded.
Current operated mode operates on one output phase
(selectable).
Protection and Safety
The unit is protected by electronic over current and duty cycle
trips on the outputs, thermal monitoring on the power
components, and fuses on the input and regulator. An earth
terminal is provided for connection to a local earth. The unit is
designed to comply with BSEN61010, and is CE marked.
Temperature Range
Storage -20°C to 60°C Operating 0°C to 45°C
Dimensions Weight
380mm x 314mm x 221mm 21kg
Including handle and corner protectors
Accessories
Operating manual, output lead set, mains lead, spare fuse set
Optional Accessories
Delta-Star supply transformer, filter unit, printer, ADMlog
Windows PC software.
Optional Delta-Star Supply Transformer
The optional delta-star supply transformer allows operation from
115V, 230V, 400V, and 440V 3 wire supplies, is selected by a
switch on the unit. An auxiliary single phase output is also
provided to supply power to a DVS3
voltage source.
Input: 115V, 230V, 400V,
440V ±10% 3 wire
3 phase 1500VA max
3
φ
output: 400V 4 wire 600VA
1 min on/15 min off
1
φ
output: 230V 300VA
5 min on/15 min off
50A-3PH Specification
Note: Due to the company’s continuous research programme, the information above may change at any time without prior notificatio n. 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
50A-3PH Data sheet rev 6 19/9/05
12