Atec T-R-PCU1 - Manual (Page 2)

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
PCU-LT/PCU1-SP Control Unit Specification
Loading Unit Current Metering
The AC output current is metered by a true RMS memory
ammeter (acquisition time 200ms) with a liquid crystal display.
The current metering has 3 ranges corresponding to 10%, 50%
and 100% of the maximum rating of the loading unit. In addition,
a 200% metering range is enabled in pulse mode.
NLU2000
Range Full scale Resolution Accuracy
10% 200.0A 0.1A ±0.5%rdg+5d*
50% 1000A 1A ±0.5%rdg+5d*
100% 2000A 1A ±0.5%rdg+5d*
200% 4000A 1A ±1%rdg+5d**
NLU5000
Range Full scale Resolution Accuracy
10% 500.0A 0.1A ±0.5%rdg+5d *1
50% 2500A 1A ±0.5%rdg+5d
*1
100% 5000A 1A ±0.5%rdg+5d *1
200% 10kA 10A ±1.5%rdg+5d *2
*1
1.5% rdg+5d in pulse mode
*2
selected in pulse mode
Timing System
The PCU1 systems have a flexible timing system with two
contact inputs and 5 operating modes. Each contact circuit
automatically selects for N/O or N/C contacts, and the status of
each contact input is shown by an LED. The timing channels
may also be triggered by a dc voltage between 24 and 240V.
Timer resolution 1ms
Timer full scale 999.999s
Timer accuracy ±0.01%rdg+2d (4d current mode)
Contact O/C voltage 24V
Contact S/C current 20mA
Vdc input range 24-240Vdc
Timer mode Timer start Timer stop
Internal Start ‘On’ button Contact
Single contact Contact 1 Contact 1
Dual contact Contact 1 Contact 2
Current operated *3 Current >20% rng Current <20% rng
Pulse mode 0.2s *4 ‘On button’ 0.2s
Pulse mode 0.5s *4 ‘On button’ 0.5s
Pulse mode 1s *4 ‘On button’ 1s
Pulse mode 2s *4 ‘On button’ 2s
Off Setting position
*3 Current operated mode is used to time circuit breakers with no
auxiliary contacts. The timer is started when the current exceeds
20% of the selected metering range (e.g. 100A on the NLU5000
500A range). The timer stops when the current falls.
*4 Pulse mode applies current to the load for a maximum of the
specified time. If contact set 1 changes state or the current
drops below 20% of the metering range during the pulse ti me,
the timer is stopped. The maximum output current is increased
in pulse mode. The maximum obtainable current is set by the
impedance of the test object and output leads.
Secondary Injection Output (PCU1-SP only)
The secondary current injection output on the unit has two taps,
allowing the injection of currents up to 100A.
Output Range Continuous Intermittent current
current 5min on
*5 1 min on *5
0-5V 33A 67A 100A
0-16V 10A 20A 30A
*5
All on times must be followed by an off time of 15 minutes
Metering Range Resolution Accuracy Current trip
10.00A 0.01A ±0.5%rdg +5d 10.5A
20.00A 0.01A ±0.5%rdg +5d 21A
100.0A 0.1A ±0.5%rdg +5d 100A
The output is protected by electronic trips and a circuit breaker.
Supply Requirements
230V±10%, 45-65Hz 1ph 11.5kVA max (23kVA overload for 2s)
Control Unit Standard Accessories
Mains lead (5m), loading unit power and metering leads (5m),
operating manual and spare fuses.
Dimensions
PCU1-SP/PCU1-LT 450(w) x 275(h) x 305mm(d)
NLU2000/NLU5000 450(w) x 275(h) x 370mm(d) incl. terminals
Weight
PCU1-LT 23kg PCU1-SP 26kg
NLU5000 55kg NLU2000 50kg
Temperature Range
Storage -20°C to 60°C, Operating 0°C to 45°C
Protection and Safety
The PCU1 series and loading units are CE marked and are
designed to meet the requirements of BS EN61010. The system
is protected by electronic trips on the outputs, circuit breakers on
the mains input, control unit output and secondary injection
output (PCU1-SP only). The unit also has a duty cycle trip on
the loading unit output and the loading unit has comprehensive
thermal protection.
Optional Loading Unit Specifications
Two loading units are available to provide a range of output
currents suitable for different primary injection tasks. Each
loading unit has three output taps allowing current injection into a
wide range of loads of differing impedances. Optional output
lead sets are also available (see www.trtest.com for details).
NLU5000 Loading Unit Intermittent Ratings
Output Maximum current
Voltage* Cont. 5 min 1 min 40s
2.3V 1500A 3000A 4500A 5000A
4.6V 750A 1500A 2250A 2500A
9.2V 375A 750A 1125A 1250A
NLU2000 Loading Unit Intermittent Ratings
Output Maximum current
Voltage* Cont. 5 min 1 min 40s
3.5V 600A 1200A 1800A 2000A
6.9V 300A 600A 900A 1200A
13.8V 150A 300A 450A 500A
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PCU1-LT-SP Data Sheet rev 4 28/12/05