VR6

The K65-12B and K125-10B Voltage Regulators are contained in an encapsulated plastic case. The regulator controls the DC exciter field power of conventional, 50 or 60 Hz brushless generators.

Regulation is provided by sensing the generator output voltage, converting it to a DC signal and comparing the signal to a reference voltage signal. An error signal is developed and used to control the DC field power in order to maintain a constant generator output.

The regulator includes frequency compensation with selectable slope, inverse time over excitation shutdown, solid-state, build-up circuitry, single-phase or three-phase voltage, single-phase or three-phase shunt or permanent magnet power input, and parallel droop compensation, and an accessory input. The accessory input provides compatibility with accessories such as a var/power factor controller

Category:

Description

Terminal number Terminal description
Upper Terminal Strip
CH GND Chassis ground connection
2 Auxiliary input from var power factor controller
3 Auxiliary input from var power factor controller
4 Connect to 7 to use internal voltage adjust, no

connection for external voltage adjust
5 1 A current transformer
5a 5 A current transformer
6 Current transformer common
6a Common connection for selectable features
7 Connect Remote Adjust from 7 to 6a, connect to 4 for internal voltage adjust
8 Connect to 6a to select 1v/Hz underfrequency slope (Not 810-34334-00)
9 Connect to 6a to select 3 phase sensing
Lower Terminal Strip
20 Phase C sensing input
22 Phase A sensing input
24 Phase B sensing input
26 3-phase power input
28 1-phase or 3-phase power input
30 1-phase or 3-phase power input
F1 Field +
F2 Field –

Table 1: Terminal descriptions

 

Adjustment Adjustment description
DRP Voltage droop adjust
FAC CAL FAC CAL is a factory voltage adjust range calibration. No customer adjustment is required.
VLT ADJ Multi-turn voltage adjust
UF Under frequency knee adjust (Not 810-34334-00)
STB Stability adjust

Table 2: Internal Adjustments

 

Specification K65-12B K125-10B
Output power (with a 240

Vac Input):

 12 Adc @ 65 Vdc maximum continuous.

25 Adc @ 125 Vdc forcing for 10 seconds.

 10 Adc @ 125 Vdc maximum continuous.

20 Adc @ 250 Vdc forcing for 10 seconds.
AC input power: 100 to 280 Vac, single-phase  50 to 400 Hz, or 63 to 105 Vac; three-phase, 50 to 400 Hz, 1092 VA maximum continuous burden 180 to 280 Vac, single-phase or three-phase, 50 to 400 Hz, 1750 VA maximum continuous burden
AC sensing voltage: 90 to 140 Vac, 50/60 Hz; single- or threethree-phase 90 to 140 Vac, 50/60 Hz;  single- or three-phase
External voltage adjust

rheostat:

 10kΩ , 2 W, potentiometer 10kΩ , 2 W, potentiometer
Regulation accuracy: ±0.5% Average responding ±0.5% Average responding
Voltage drift: ±1% voltage variation for a 40°C  (104° F) change ±1% voltage variation for a 40° C (104° F) change
Response time: < 4 milliseconds < 4 milliseconds
Frequency compensation: 1 or 2 V/Hz jumper selectable with knee adjustable from 45 Hz to 65 Hz. 1 or 2 V/Hz jumper selectable with knee adjustable from 45 Hz to 65 Hz.
EMI suppression: Internal filter Internal filter
Voltage Build-Up: Internal provisions for automaticvoltage build-up from generator residual voltages as low as six Vac. Internal provisions for automatic voltage build-up

from generator residual

voltages as low as six Vac.
Overexcitation shutdown: Overexcitation protection starts timing at 90 Vdc ±5% and takes  the output to zero in greater than 30 seconds. The output can be 125 Vdc for greater than 10 seconds Overexcitation protection  starts timing at 180 Vdc ±5% and takes the output to zero in greater than 30 seconds. The output can be 250 Vdc for greater than 10 seconds.
Droop 1 A or 5 A, <10 VA, adjustable from 0 to 10% at rated input current, 0.8 power factor 1 A or 5 A, <10 VA, Adjustable  from 0 to 10% at rated input current, 0.8 power factor
UL recognized/CSA certified UL Recognized per Standard 508, UL File NO. E97035. CSA certified per Standard CAN/CSA-C22.2 No.14-95, CSA File No. LR 23131 UL recognized per Standard 508, UL File NO. E97035.

CSA certified per Standard

CAN/CSA-C22.2 No. 14-95,CSA File No. LR 23131

Table 3: Electrical Specification

 

Specification K65-12B and K125-10B
CE conformity Conforms to:

Radiated Emissions – EN50081-2

Radiated Immunity:

Electric field – EN61000-4-3 (10 V/m

Conducted – EN61000-4-6 (10 VRMS)

Conducted Emissions – EN50081-2 (EN55011, Class A)

ESD Immunity – EN50082-2 (4 kV contact, 8 KV air)

EFT Immunity – EN50082-2 (2 kV coupling clamp)

Magnetic Immunity – EN50082-2 (30ARMS, 50 Hz)

Safety – EN61010-1

(When enclosed within a suitable steel enclosure attached the generator)
Operating and storage

temperature:

 -40° C (-40° F) to +70° C (+158° F).
Shock: Withstands up to 20 g in each of three mutually perpendicular axes.
Vibration: Withstands the following accelerations at the stated frequency: 0.5 g; 18 to 2000 Hz
Weight: Approximately 1.1 kg (2.5 lbs.)

Table 4: Physical Specifications

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