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Name:

VR6

Features

The K65-12B and K125-10B Voltage Regulators are contained in an encapsulated plastic case. The regulator controls the DC exciter eld 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 eld 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 sensing, 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.

Connections

Before connecting the K65-12B and K125-10B into your system, review the terminal descriptions provided in Table 1, the internal adjustments provided in Table2.

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

Underfrequency knee adjust (Not 810-34334-00)

STB

Stability adjust

Table 2: Internal adjustments

Technical parameters

Specications

Refer to Table 3 for the electrical specications. Refer to Table 4 for the physical specications:

 

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:

10k , 2 W, potentiometer

10k , 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 specifications

 
 

Specification

K65-12B and K125-10B

CE conformity

Conforms to:

Radiated Emissions ..................EN50081-2

Radiated Immunity:

Electric fi eld ......................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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Address:No.C-13-1 Tiehu Mechanical & Electrical Industrial Zone, Chengyan Town, Fuan,Ningde, Fujian, China
Tel:86-593-6050668  Fax:86-593-6116388   E-mail: avr@permanent.cc; avr@fjzhdz.com