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DER1 DIGITAL REGULATOR
INSTALLATION
Upon receipt of the digital regulator, perform a visual inspection to ensure that no damage has been sustained during transporta-
tion and movement of the equipment. In the event of damage, advise the shipper, the insurance company, the seller or Mecc Alte
immediately. If the regulator is not installed immediately, store it in its original packaging in a dust and humidity-free environment.
The regulator is normally installed in the generator terminal box. It is fixed with two or M4x25 screws and must be installed in a lo-
cation where the temperature does not exceed the environmental conditions foreseen.
CONNECTIONS
The digital regulator connections depend on the application and excitation system. An error in connection may have serious conse-
quences for the unit. Carefully check to make sure that all connections are precise and in accordance with the attached
drawings, before turning on the power
TERMINALS
The connections must be made using cables having a minimum diameter :
1,5 mm² for power cables on terminals from 1 to 22
0,5 mm² for signal cables on terminals from 23 to 32
INPUTS AND OUTPUTS : TECHNICAL SPECIFICATIONS
Terminal
Name
(1)
1
Exc-
2
Aux/Exc+
3
Aux/Exc+
4
UFG
5
UFG
6
UHG
7
UHG
8
UHB
9
UFB
10
UFB
11
UFB
12
UFB
13
-
14
VFG
15
VHG
16
VHB
17
VFB
18
-
19
WFG
20
WHG
21
WHB
22
WFB
Note 1) The terminals are connected to each other on the board: 2
with 3, 74 with 5, 6 with 7, 9 with 10, 11 and 12.
.
TABLE 1 : CONNECTOR CN1
Function
Excitation
Power
Sensing range 2
Sensing range 1
Jumper range 1
Sensing
Sensing range 1
range 2
Sensing
Sensing range 1
range 2
DER1 APPENDIX
Further information about DER1 regulator are
available in the web site download area at
following address :
Specification
Continuous rating: 4Adc
Transitory rating: 12Adc at peak
40÷270 Vac, Frequency: 12÷72Hz
Range 2: 150÷300 Vac
Burden: <1VA
Range 1: 75÷150 Vac
Burden: <1VA
Board reference
Not present
Range 1: 75÷150 Vac
Burden: <1VA
Range 2: 150÷300 Vac
Burden: <1VA
Not present
Range 1: 75÷150 Vac
Burden: <1VA
Range 2: 150÷300 Vac
Burden: <1VA
Note 2) Minimum power voltage 40Vac at 15Hz, 100V at 50Hz, 115V
at 60Hz.
58
www.meccalte.com
(2)
(1)
U channel
Short for sensing 75÷150 Vac
Star point (12YY or 6Y leads generators)
is hard connected to AVR power supply
(1)
input
V channel, to be connected in parallel to
U channel in case of single phase
sensing.
W channel, unused (with shorted inputs)
in case of single phase sensing.
ATO/E 28 Manual - March 2018 rev. 00
Notes
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