AVC63-7 VOLTAGE REGULATOR

AVC63-7 VOLTAGE REGULATOR

Using enhanced technology, the AVC63-7 half wave voltage regulator is designed for use on 50/60 Hz brushless generators. This encapsulated regulator is small in size, ruggedly constructed, and incorporates solid state technology with frequency compensation, automatic voltage build- up, and parallel droop as standard.

 

FEATURES
• Integrated circuitry for compact size, simplicity, high reliability.
• Extremely rugged.
• Exciter field current 7A continuous, 11.5A forcing.
• Regulation accuracy better than ± .25% no load to full load.
• Fast response.
• Frequency compensation.
• Overexcitation shutdown.
• Built-in parallel droop compensation.
• EMI suppression.
• Available from stock.
• CSA certified.
• Qualified to the requirements of:
- IEEE C37.90.1 for Surge Withstand Capability.
- ASTM B117-73, Method 711-1C, for Salt Fog

 

 

The AVC63-7 model of voltage regulator maintains gen- erator line voltage on brushless generators from 100kW to over500kW in size.The voltage regulator senses generator average voltage to maintain a precise regulation band within ±.25 percent. This is accomplished by converting a 240 Vac single phase power input to a controlled DC signal to the generator’s exciter field. The solid-state voltage build-up circuit will enable automatic generatorline voltage build-up with a voltage input to the regulator of at least 6 Vac. Customer accessible stability, under frequency and range adjusts enable fine tuning of the voltage regulator to the generator in use.

Figure 1 demonstrates the under frequency characteristics of the voltage regulator during prime mover low speed conditions. Customer curve selection matches the voltage regulator to 50 or 60 Hz systems.


 

SPECIFICATIONS (continued)

DC OUTPUT POWER: 7 Adc at 63 Vdc maximum con
tinuous, 11.5 Adc at 105 Vdc ten second forcing.
(Forcing with 240 Vac nominal input).
EXCITER FIELD DC RESISTANCE: 9.0 ohms mini-
mum; 100 ohms maximum.
AC POWER INPUT: Operating range: 190-277 Vac
single phase, 50/60 Hz ±10%. Burden 900VA.
SENSING INPUT: 190-240 Vac single phase, 50/60Hz
±10%. Burden <5VA.
VOLTAGE ADJUST RANGE: 170-264 Vac.
REGULATION ACCURACY: Better than ±.25% no load
to full load.
RESPONSE TIME: Less than 1.5 cycles for ±5%
change in sensing voltage.
EMI SUPPRESSION: Internal electromagnetic
interference filtering.
PARALLEL COMPENSATION: 5A input from a current
transformer with 10VA burden @ 0.8PF.
 

 VOLTAGE BUILDUP: Internal provisions for automatic voltage buildup from generator residual voltages as low as 6 Vac.
TERMINATIONS: 1/4 “Fast-On” Terminals.
POWER DISSIPATION: 35 Watts maximum.
OPERATING TEMPERATURE: -40°C (-13°F) to +60°C (+140°F).
STORAGE TEMPERATURE: -40°C (-40°F) to +85°C (+185°F).
VIBRATION: Withstands 1.2 Gs at 5 to 26 Hz; 0.036” double amplitude at 27 to 52 Hz; and 5 Gs at 53 to 1000 Hz.
SHOCK: Withstands up to 15 Gs in each of three mutually perpendicular axes.
WEIGHT: 10 oz. (0.28 kg) Net.

                                                           Figure 2 - Typical Interconnection Diagra

                                                                                Figure 3 - Outline Drawing
The AVC63-7 model of voltage regulator maintains gen- erator line voltage on brushless generators from 100kW to over500kW in size.The voltage regulator senses generator average voltage to maintain a precise regulation band within ±.25 percent. This is accomplished by converting a 240 Vac single phase power input to a controlled DC signal to the generator’s exciter field. The solid-state voltage build-up circuit will enable automatic