D350 Digital Voltage Regulator
The purpose of this voltage regulator is to regulate alternators with a field current of less than 5A in continuous operations, and 10A maximum in the event of short-circuit for 10 seconds maximum.
The design is in accordance with mounting in a generator terminal box, or a control cabinet. At a minimum, following the local protection and safety standards is required, especially those standards specific to electrical installations for voltages of 300 VAC phase-to-neutral maximum.
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| Illustration 1 | g06476083 |
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D350 | |
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| Illustration 2 | g06475852 |
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(1) F1
(2) F2 | |
| Fuse References | ||
| F1 | F2 | |
| In standard | 10A, 250V ref. Mersen Q206071T or equivalent | 10A, 250V ref. Mersen Q206071T or equivalent |
| For UL applications | 8A, 250V ref. Mersen T084013T or equivalent | 10A, 250V ref. Mersen Q206071T or equivalent |
Similar to other AVR, the D350 is an electronic printed circuit board, protected with a polyurethane resin as shown in figure 2.
For more information about D350, see Special Instruction, "D350 Digital Voltage Regulator"UENR8557.
Near Field Communication (NFC) Configuration Module
The D350 is equipped with NFC technology for communication and configuration purposes. For specific information about how to configure this feature on D350, refer to Special Instruction, UENR8557, "D350 Digital Voltage Regulator" , NFLink Configuration Module.
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| Illustration 3 | g03487998 |
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Under-frequency (loading) profile (In this example slope1 = 1.0 V/Hz, slope2 = 2.0 V/Hz) | |
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| Illustration 4 | g03457278 |
- If a short-circuit fault occurs at the generator terminals, the EM10 will allow the excitation current to rise to the upper limit value set by the adjustment potentiometer (maximum 10 Amps)
- The excitation current will be clamped at the upper limit value for 10 seconds (fixed internally)
- After 10 seconds, the excitation current is reduced to a value of 10% of the potentiometer setting
For more information about EM10, contact your Cat dealer.