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1.1.5 1540
The1540 is available either as a display unit operating in
conjunction with a 15xx measurement transducer or as a
self-contained unit incorporating a transducer. The unit can
measure and display the following:
• System voltage (average of all phases)
• System current (average of all phases)
• System frequency (Hz)
• Voltage line to neutral for each phase (4-wire systems only)
• Voltage line to line for each phase (calculated in 4-wire)
• Current in each line.
• Neutral current
1
• Power Factor
• Active Power (kW)
2
• Reactive Power (kVAr)
2
• Apparent Power (kVA)
• Active Energy (kWh)
2
• Reactive Energy (kVArh)
2
• Total System Current Demand (Admd)
2
• Total System Active Power Demand (kWD)
2
• Maximum Total System Current Demand (AD)
2
• Maximum Total System Active Power Demand (kWD)
2
The 1540 has Set-up screens for:
• Full-scale current value
• Potential transformer - primary and secondary voltages
(Dis 1540 and Integra 15xx)
• Potential transformer - primary voltages (self contained)
• Demand integration time and energy/demand resets
• Pulse output duration and rate divisor (option)
• RS485 serial Modbus parameters (option)
• Analogue current output (option, with separate
transducer only)
A pulsed relay output, indicating kWhr (and Kvarh on the two
part Dis 1540 and Integra 15xx combination), and an RS485
Modbus
TM
output are available as optional extras. The Modbus
output option allows remote monitoring from another display
(not self contained) or a Modbus master.
The Analogue current output option provides a current output
that indicates the value of a chosen parameter.
8
Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03
Default display
1
Neutral referenced parameters are only
available when used with 4-wire and
single phase configured transducers.
2
All energy and demand measurements
are importing only unless connected as
exporting unit.