
DKG-175 User Manual V-1 (24.07.2017)
DKG-175 AUTOMATIC
TRANSFER SWITCH
(WITHOUT DC SUPPLY)
Datakom DKG-175 is a DIN Rail mounted ATS
controller not requiring DC supply. Thanks to this
feature, it is not required to carry the DC supply from
the battery to the transfer panels, providing ease of
installation.
The unit monitors 3-phase mains voltages, sends
remote start command to the generating set and
performs changeover of both generator and mains
contactors.
The front panel leds provide information about mains
and generator power availability as well as contactor
positions. Moreover, mains phase voltages and
frequency can be seen on front panel.
Mains voltage and frequency high and low limits,
mains waiting timer, mains fail timer, generator start
delay, cooldown timer and mains contactor timer are
front panel programmable. Generator contactor timer
is adjustable between 1 and 40 seconds through front
panel knob.
DIN Rail mounted
No DC supply required
Mains phase order check
Adjustable MCB and GCB delays
Programmable mains frequency and voltage high
and low limits
Programmable delay timers
10A/250VAC MCB and GCB outputs
10A/28VDC remote start output
Isolated mains and genset inputs
Test mode

DKG-175 User Manual V-1 (24.07.2017)
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Electrical equipment should be installed only by qualified specialist. No responsibility is
assured by the manufacturer or any of its subsidiaries for any consequences resulting from
the non-compliance to these instructions.
Check the unit for cracks and damages due to transportation. Do not install damaged
equipment.
Do not open the unit. There are no serviceable parts inside.
Fuses must be connected to the power supply and phase voltage inputs, in close proximity of
the unit.
Fuses must be of fast type with a maximum rating of 6A.
Disconnect all power before working on equipment.
When the unit is connected to the network do not touch terminals.
Any electrical parameter applied to the device must be in the range specified in the user
manual. Although the unit is designed with a wide safety margin, over-range parameters may
reduce lifetime, alter operational precision or even damage the unit.
Do not try to clean the device with solvent or the like. Only clean with a dump cloth.
Verify correct terminal connections before applying power.
SAFETY NOTICE
Failure to follow below instructions
will result in death or serious injury

DKG-175 User Manual V-1 (24.07.2017)
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Section
1. INSTALLATION INSTRUCTIONS
1.1. Front Panel
1.2. Electrical Connections
2. LED INDICATORS
3. PUSHBUTTON FUNCTIONS
4. OPERATION OF THE UNIT
4.1. Test Mode
5. PROGRAMMING
6. DECLARATION OF CONFORMITY
7. TECHNICAL SPECIFICATIONS
8. CONNECTION DIAGRAM

DKG-175 User Manual V-1 (24.07.2017)
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Before installation:
Read the user manual carefully, determine the correct connection diagram.
Be sure that the temperature of the environment will not exceed the maximum operating temperature
in any case.
Below conditions may damage the device:
Incorrect connections.
Incorrect power supply voltage.
Voltage at measuring terminals beyond specified range.
Current at measuring terminals beyond specified range.
Overload or short circuit at relay outputs
Below conditions may cause abnormal operation:
Power supply voltage below minimum acceptable level.
Power supply frequency out of specified limits
1. INSTALLATION INSTRUCTIONS