Highlights
Highlights
Benefits
- Redundancy ensures power generation capability at all times
- Non-operating channel can be extracted without powering down the AVR
Features
- Two fully featured independent controllers
- Two independent power circuits
- Removable “hot-swappable” cards
Applications
- Industry, infrastructure
- Oil and gas, renewables
- Utilities
Overview
Overview
We provide a wide range of standard BRUSH™ Power Generation PRISMIC® excitation systems as well as bespoke systems designed to suit any customer’s needs.
Standard products
The PRISMIC A3100 includes two fully featured independent controllers and two independent power circuits in a single 6U, 19-inch enclosure, all available as removable cards (single channel option available). The A3100 builds on decades of experience and technologies, incorporating features such as integrated power system stabilizer, automatic synchronizer, R10 ground (earth) fault receiver, ethernet and USB connectivity integrated into a single standard 19-inch rack package. With most connectors completely compatible with earlier controllers, the A3100 is an easy replacement choice for MAVR, MicroAVR, A30, A32, and other previous AVRs.
The PRISMIC A32 excitation controller or automatic voltage regulator (AVR) includes two fully independent controllers and two independent power circuits. It is one of the first excitation controllers to provide features such as an integrated power system stabilizer, a color TFT display, and ethernet connectivity. It is mounted within a single 6U, 19-inch enclosure.
The PRISMIC A12 excitation controller, designed to control the excitation of a brushless generator, uses the latest digital microcontroller technology to make it our most compact unit. It's provided on a mounting plate, complete with wiring loom and auxiliary equipment.
Static and bespoke excitation systems
The PRISMIC A50 provides stable voltage regulation with high reliability using advanced microprocessor and software technologies. Systems are available to satisfy generator excitation current ratings from under 20 A to over 8,000 A.
Monitoring systems
The PRISMIC R10 rotor earth fault monitor (REFM) uses an electronic unit to detect a single earth fault and dispenses with the need for brushes and sliprings, resulting in enhanced reliability and reduced maintenance costs.
Power system stabilizer
Power system stabilizer functionality is included in our latest excitation controllers. However, the T20 provides this functionality in a separate unit to be used with simpler excitation controllers.
Specifications
PRISMIC A12
PRISMIC A3100
PRISMIC A32
Max. continuous output current
20 A
20 A
20 A
Max. 10 second output current
30 A
30 A
30 A
Excitation supply voltage
Single phase
85 to 264 V
Single phase
110 V to 330 V
Single phase
110 to 330 V
Excitation supply frequency
48–480 Hz
50–480 Hz
50–480 Hz
Nominal sensing voltage
100–120 V
100 V to 120 V selectable in 0.1 V steps
100 V to 120 V selectable in 0.1 V steps
Auxiliary power supply
24 V DC
24 V DC
24 V DC
Voltage sensing phases
3 phase or 1 phase
3 phase or 1 phase
3 phase or 1 phase
Nominal generator frequency
50 or 60 Hz
50 or 60 Hz
50 or 60 Hz
Current transformer input nominal
5 A or 1 A
5 A or 1 A
5 A or 1 A
Current transformer input burden
Less than 0.5 VA
0.3 VA
0.3 VA
Load taken by sensing inputs
n/a
0.3 VA
0.3 VA
Maximum field voltage for forcing
75% of available PMG voltage
75% of available excitation supply voltage
70% of available excitation supply voltage
Minimum field voltage
75% of available PMG voltage
-60% of available excitation supply voltage
-70% of available excitation supply voltage
Voltage adjustment range
Selectable from +/-10% to +/-25%
Selectable from +/-10% to +/-25%
Selectable from +/-10% to +/-25%
Accuracy of control
+/-0.2%
+/-0.2%
+/-0.5%
Operating temperature range
-20 ºC to 50 ºC
0 ºC to 55 ºC
0 ºC to 55 ºC
Storage temperature range
-20 ºC to 80 ºC
-20 ºC to 80 ºC
-20 ºC to 80 ºC
Dimensions (HxWxD)
570 x 699 x 185 mm
266 x 483 x 301 mm
266 x 483 x 406 mm
Weight
31 kg
14 kg
23 kg