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2018.01 / g
5
Electric Power Generation
Installation and maintenance
R150
AVRs
5384 en -
3 - TECHNICAL SPECIFICATION
1) Sensing input
- Voltage: 240 VAC ± 10% for 1-phase,
380 V to 480 VAC ± 10% for 3-phase, 2-line
sensing. The AVR senses the true average
of the line-to-line waveform. Use the resistor
(SMD) network for trouble-free sensing and
control of sensed voltage/regulation.
2) Input power
- Voltage: 415 V for 3-phase and 240 V for
1-phase
- Frequency: 50/60 Hz
3) Output power
- Voltage: 105 VDC at 240 VAC input
- Current:
• 6 A DC
• 8 A for 30 sec. (when allowed by the field
resistance)
4) Operating temperature: -20ºC to +70ºC
5) Storage temperature: -40ºC to +80ºC
6) Voltage setting: min ± 10% of rated
voltage.
7) Stability setting: can be adjusted to obtain
a correct transient response in steady state.
8) 2 to 2.5 kOhm external setting
potentiometer for 1 Watt to get a voltage
setting range of ± 10%.
9) Quadrature droop setting for parallel
operation: 4% droop for an output current
from the 5 A CT placed on the U phase.
10) Auxiliary inputs A1 and A2: ± 4.5 VDC
will change the voltage by ± 10%.
11) Under frequency roll-off setting:
available below 46 Hz for 50 Hz and below
56 Hz for 60 Hz.
12) Voltage build-up: ≥ 2 V (L-N).
13) Voltage regulation: ± 0.8% at the AVR
terminals.
14) Thermal drift: ± 1% for a 30ºC change in
temperature.
15) Response time: less than 50 ms.
16) Closed loop response: typically 0.5 sec
to recover 98% of the defined voltage for a
field forcing ratio of 1:2.
17) Sensing loss protection: the voltage
should disappear when the sensing circuit is
open.
18) Overexcitation protection: 10 VDC to
85 VDC.
Setpoint : 60 VDC.
19) Protection fuse: 6 A, 240 VAC.
20) Potentiometer sealing: except for the
V-trim potentiometer, all potentiometers are
sealed.
21) Frequency roll-off indicator: LED
provided (UF).
22) Sensing loss indicator: LED provided
(SL).
23) Overexcitation indicator: LED provided
(OE).
24) Protection on the devices: suitable R-C
snubber to be provided for the device used
to protect against voltage surges.
25) Potting/Encapsulation details: the
components on the AVR should be
completely encapsulated with suitable PU
resin compound to absorb transients/
vibrations during operation.
26) Alternator excitation details: (typical)
- Full load:
• Excitation voltage: 40 to 50 V
• Excitation current: 2.5 to 5.0 A
27) Terminal marking: see diagram
28) AVR testing: dielectric test, thermal
cycling, Static test, voltage variation check,
U/F curve, stability check, field excitation
limit, external voltage setting check, DC
input voltage check.
29) Dimensions:
- Overall: 135 x 110 x 47.5 (mm)
- Mounting: 115 x 90 (mm)
- Mounting hole dia: 9 (mm)
30) Weight: 320 g