Motor Starting; Standby Power Connections; Auxiliary Power While Welding - Lincoln Electric RANGER 3PHASE SVM207-A Service Manual

A-8
All auxiliary power is protected by circuit breakers with
the following values:
The 120V has 20 amp circuit breakers for each duplex
receptacle. The 240V has 50 amp circuit breakers for
each hot lead going the 240V receptacle.
The 480V 3 phase circuit breaker / switch is a 3 phase,
15 amp circuit breaker.
Ground Wire
Periodically check the ground wire at plugs, power
cords and auxiliary loads to ensure that the grounding
circuit is intact and connected.

MOTOR STARTING

Most 1.5 hp AC single phase motors can be started if
there is no load on the motor or other load connected
to the machine, since the full load current rating of a
1.5 hp motor is approximately 20 amperes (10
amperes for 240 volt motors). The motor may be run at
full load when plugged into only one side of the duplex
receptacle. Larger motors through 2 hp can be run pro-
vided the receptacle rating as previously stated is not
exceeded. This may necessitate 240V operation only.
The 480 volt 3 phase output of the RANGER® 3
PHASE is capable of running most 480VAC 3 phase
motors up to 10HP. A 10HP motor must be started with
no load on the motor and no other load connected to
the machine, since the full load current of a 10HP
480VAC 3 phase motor is approximately 12.5 amps.
Refer to the reconnect phase output to any load, the
ground at the 3 phase receptacle is NOT the neutral of
3 phase connection, and should under no circum-
stance be connected to the neutral of any 3 phase
load.

STANDBY POWER CONNECTIONS

The RANGER® 3 PHASE is suitable for temporary,
standby, or emergency power using the engine manu-
facturer's recommended maintenance schedule.
The RANGER® 3 PHASE can be permanently
installed as a standby power unit for 240V-3 wire, sin-
gle phase 40 ampere service.
WARNING
(Connections must be made by a licensed electrician
who can determine how the 120/240V power can be
adapted to the particular installation and comply with
all applicable electrical codes.) The following informa-
tion can be used as a guide by the electrician for most
applications (refer also to the connection diagram
shown in Figure A.1).
------------------------------------------------------------------------
INSTALLATION
1. Install a double pole, double throw switch between
the power company meter and the premises dis-
connect.
Switch rating must be the same or greater than the
customer's premises disconnect and service over-
current protection.
2. Take necessary steps to assure load is limited to
the capacity of the RANGER® 3 PHASE by
installing a 40 amp 240V double pole circuit break-
er. Maximum rated load for the 240V auxiliary is 40
amperes. Loading above 40 amperes will reduce
output voltage below the allowable -10% of rated
voltage which may damage appliances or other
motor-driven equipment.
3. Install a 50 amp 120/240V plug (NEMA type 14-50)
to the Double Pole Circuit Breaker using No. 8, 4
conductor cable of the desired length. (The 50 amp
120/240V plug is available in the optional plug kit.)
4. Plug this cable into the 50 amp 120/240V recepta-
cle on the RANGER® 3 PHASE case front.

AUXILIARY POWER WHILE WELDING

Simultaneous welding and power loads are permitted
by following Table I. The permissible currents shown
assume that current is being drawn from either the
120V or 240V supply (not both at the same time). Also,
the "Output Control" is set at "10" for maximum auxil-
iary power.
SIMULTANEOUS WELDING AND POWER***
Output Selector
Setting
Max. Stick or Wire
Feed Setting
145 Stick Setting
90 Stick Setting
NO WELDING
*
Each duplex receptacle is limited to 20 amps.
**
Not to exceed 40A per 120VAC branch circuit
when splitting the 240 VAC output.
***
Use of 3-Phase AC power is not recommended
while welding.
RANGER® 3 PHASE
TABLE A.1
Permissible Power Permissible Auxiliary
Watts (Unity Power Current in Amperes
*
Factor) @ 120V -or- @ 240V
None 0
4500 38
**
6500 54
**
9500 80
A-8
0
23
27
40