Marathon Electric DVR 2000E+ - Connections

21
CONNECTIONS
ELECTRICAL HAZARD
Failure to connect the voltage regulator in accor-
dance with the manufacturer’s documentation may
result in serious personal injury, death, and/or
property damage.
ELECTRICAL SHOCK HAZARD
Failure to follow these instructions may result in
serious personal injury, death, and/or property
damage.
Installation and repair of electrical generators
and voltage regulators should be attempted
by qualified personnel only. Electrical con-
nections shall be made by a qualified electri-
cian in accordance with all local, national,
international and/or other applicable codes,
rules or regulations and sound practices.
Do not touch electrically live parts.
Disconnect, lockout and tag prime mover
and input power supplies before installing or
servicing voltage regulator. Use a voltmeter
to verify that power is off before contacting
conductors.
Do not open terminal box or touch unpro-
tected terminals while the generator shaft
is rotating. Shaft rotation produces voltage
in generators even when no excitation is
applied. Residual voltage is present at the
generator leads and regulator connections
even when the regulator fuse is removed.
Ground (earth) regulator in accordance with
local, national, international and/or other
applicable codes, rules or regulations.
Incorrect wiring may damage the unit.
Note: Be sure that the DVR
®
is hard-wired to earth
ground with no smaller than 12 AWG copper wire
attached to the ground terminal on the rear of the
unit case. When the unit is configured in a system
with other devices, it is recommended to use a
separate lead to the ground bus from each device.
DVR
®
connections are dependent on the application.
DVR
®
Connectors
DVR
®
units have four types of interface connectors.
All connectors are located on the rear of the unit.
1. Ten (10) 1/4”, quick-connect terminals for
generator connections
2. Two (2) 12-pin Deutsch (DTC style) connec-
tors for current transformer (CT) and system
interface connections
3. One (1) 3-pin Amp/Tyco Mini Mate-N-Lok
receptacle for the Controlled Area Network
(CAN) bus interface.
4. One (1) 9-pin DB-9 type connector for the
communication between the DVR
®
and
DVRPortal™.
Wires performing common functions, such as volt-
age sensing leads, should be grouped together.
Figure5-4showsthequickdisconnectterminalcon-
nections located on the rear panel of the DVR
®
.
5
Installation
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