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Features |
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 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.
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Terminal number |
Terminal description |
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Upper Terminal Strip |
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CH GND |
Chassis ground connection |
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2 |
Auxiliary input from var power factor controller |
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3 |
Auxiliary input from var power factor controller |
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4 |
Connect to 7 to use internal voltage adjust, no
connection for external voltage adjust |
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5 |
1 A current transformer |
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5a |
5 A current transformer |
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6 |
Current transformer common |
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6a |
Common connection for selectable features |
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7 |
Connect Remote Adjust from 7 to 6a, connect to 4 for internal voltage adjust |
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8 |
Connect to 6a to select 1v/Hz underfrequency slope (Not 810-34334-00) |
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9 |
Connect to 6a to select 3 phase sensing |
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Lower Terminal Strip |
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20 |
Phase C sensing input |
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22 |
Phase A sensing input |
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24 |
Phase B sensing input |
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26 |
3-phase power input |
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28 |
1-phase or 3-phase power input |
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30 |
1-phase or 3-phase power input |
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F1 |
Field + |
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F2 |
Field - | Table 1: Terminal descriptions
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Adjustment |
Adjustment description |
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DRP |
Voltage droop adjust |
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FAC CAL |
FAC CAL is a factory voltage adjust range calibration. No customer adjustment is required. |
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VLT ADJ |
Multi-turn voltage adjust |
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UF |
Underfrequency knee adjust (Not 810-34334-00) |
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STB |
Stability adjust | Table 2: Internal adjustments |
Technical parameters
Specifications
Refer to Table 3 for the electrical specifications. Refer to Table 4 for the physical specifications:
|
Specification |
K65-12B |
K125-10B |
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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. |
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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 |
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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 |
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External voltage adjust
rheostat: |
10kΩ , 2 W, potentiometer |
10kΩ , 2 W, potentiometer |
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Regulation accuracy: |
±0.5% Average responding |
±0.5% Average responding |
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Voltage drift: |
±1% voltage variation for a 40°C (104° F) change |
±1% voltage variation for a 40° C (104° F) change |
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Response time: |
< 4 milliseconds |
< 4 milliseconds |
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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. |
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EMI suppression: |
Internal filter |
Internal filter |
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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. |
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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. |
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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 |
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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
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Specification |
K65-12B and K125-10B |
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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) |
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Operating and storage
temperature: |
-40° C (-40° F) to +70° C (+158° F). |
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Shock: |
Withstands up to 20 g in each of three mutually perpendicular axes. |
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Vibration: |
Withstands the following accelerations at the stated frequency: 0.5 g; 18 to 2000 Hz |
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Weight: |
Approximately 1.1 kg (2.5 lbs.) |
Table 4: Physical specifications |
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