Nidec D550 Digital Voltage Regulator Digital AVR Instruction Manual
- August 16, 2024
- Nidec
Table of Contents
SAFETY INSTRUCTIONS
D550
DIGITAL AVR
For the user’s own safety, the D550 must be connected to an approved earth
using the earth terminal shown above.
M4 female terminal. Useful depth 4 mm, tightening torque 1.2 Nm ± 0.2 Nm.
Tightening torque for user terminal is:
- Connectors 3.5 mm pitch: 0.22 Nm min. to 0.25 Nm max.
Crimping power connectors (provided into the kit) must be done with a specific tool:
- Tyco Electronics ref. 91500, 91510, 91508, 91506 or equivalent
For UL certified generators:
– Copper conductors, with adapted gauge and temperature rating at least
75°C must be used.
– Instrument transformers shall comply with basic insulation requirements
defined in the Instrument Transformers standards (IEEE C57.13 series) or the
equivalent.
– Protection for the power supply circuit by Listed Class CC Fuse (15A
max.) or Listed inverse time circuit breaker (10A max.).
– Protection for the auxiliary DC supply by 1A fast acting fuse (Mersen
250FA 1A- E76491 or equivalent).
It is essential to comply with the power connection diagrams recommended in this manual.
The D550 includes devices which, in the event of problems, can deenergize or over excite the generator. The generator itself can also become jammed for mechanical reasons. Finally, voltage fluctuations or power cuts may also cause the unit to stop.
In an installation, the D550 is a device designed to be integrated into an electric cabinet or enclosed into the electrical machine, and can under no circumstances be considered to be a safety device. It is therefore the responsibility of the machine manufacturer, the designer of the installation or the user to take all necessary precautions to ensure that the system complies with current standards, and to provide any devices required to ensure the safety of equipment and personnel (especially direct contact with connectors when the AVR is running).
Nidec Leroy-Somer declines all responsibility in the event of the above recommendations not being observed.
Please refer to D550 instruction manual, available in Nidec LeroySomer website, to ensure installation and wiring. You must imperatively understand and comply with the safety instructions described in it.
Scan the code or go to www.lrsm.co/d550 to access product documentation and software.
WIRING
(1)
Grid voltage measurement
0..530VAC rms max. phase/phase
< 2VA
Phase / Phase (MT/HT)
Phase / Phase (MV/HV)|
Phase / Phase (BT)
Phase / Phase (LV)|
(2)
Generator voltage measurement
0..530VAC rms max. phase/phase
0..346VAC rms max. phase/neutral
< 2VA
Phase / Phase (MT/HT)
Phase / Phase (MV/HV)|
Phase / Phase (BT)
Phase / Phase (LV)|
3 Phases (MT/HT)
3 Phases (MV/HV)|
3 Phases (BT)
3 Phase (LV)|
(3)
Pt100 / RTDs
-50C..+250C
(4)
(5)
(6)
D550 – DIGITAL AVR – REF. 5779fr/en-2024.01/d
ELECTRIC FEATURES
-
Generator voltage measurement
– 3-phase, 2-phase
– Range: 0-230-530 VAC
– Consumption: < 2 VA -
Grid voltage measurement
– 2-phase
– Range: 0-230-530 VAC
– Consumption: < 2 VA -
Generator current measurement
– 1 or 3-phase
– Secondary range: 1 or 5 A
– Consumption: < 2 VA -
AC supply input
– PMG, AREP, SHUNT
– Range: 50-277 VAC -
Excitation
– Rated field current (continuous):
7 A at 70°C
8 A at 55°C
– Field forcing current (10s max):
15 A at 70°C
– Recommended field resistance:4 ohms
-
Auxiliary supply: 8-35 VDC
– Consumption: < 1 A -
Frequency range: 30-400 Hz
-
Storage temperature:
-55°C +85°C -
Operating temperature:
-40°C +70°C
Analog inputs/outputs
0V referenced to earth
Not isolated in/out
Potentiometer (Only input)|
4-20mA
+/-10V
0/+10V|
Digital inputs/outputs
Switch input
Logic can be inverted
Input|
Open collector outputs
Logic can be inverted
30VDC – 150mA max.
Output|
Relay outputs
Dry contact
Logic can be inverted
125VAC – 5A / 30VDC – 3A max.
125VAC – 5A max.
30VDC – 3A max.
(7)
Generator current measurement
0..5A
< 2VA
|
(8)
AC Power supply
50..277VAC rms max.
AREP|
PMG|
SHUNT|
(9)
Field
(10)
Auxiliary supply
Fuse 1A
MOUNTING
In the case of installation in a cabinet, take care to maintain a sufficient air flow around the regulator, and position it horizontally as indicated in order to maintain the convection air flow of the heatsinks.
Alternator Service Hotline
Americas …….. : +1 (507) 625 4011
EMEA ………… : +33 238 609 908
Asia Pacific … : +65 6250 8488
China ………….. : +86 591 8837 3010
India …………… : +91 806 726 4867
service.epg@leroy-somer.com www.lrsm.co/support
Genuine spare parts – Maintenance and repair – Technical support
© 2024 Moteurs Leroy-Somer SAS. The information contained in this brochure is for guidance only and does not form part of any contract. The accuracy cannot be guaranteed as Moteurs Leroy-Somer SAS have an ongoing process of development and reserve the right to change the specification of their products without notice.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>