Ramsond SunRay 1500 and 3000 Inverters
Instruction Manual (v. 34411)
©
Ramsond Corporation. All right reserved. Ramsond and Sunray are trademarks of Ramsond Corp.
Page 12.
High-Speed Cooling Fans
The high-speed fans keep the internal temperature of the inverter within operating limits. These
fans are thermostatically controlled and turn on or off automatically based on the internal
temperature of the inventor. SunRay 1500 is equipped with three high speed cooling fans.
SunRay 3000 is equipped with a single, large diameter high speed cooling fan.
Negative DC (−) and Positive DC (+) Input Terminals
DC input terminals are used to connect the inverter to heavy duty cables from the battery or
battery bank. For connection information, refer to the sections on installation.
Ground Terminal
This connection is located on the lower left of the rear panel. It is for attaching a 6 gauge
insulated safety ground wire. This safety wire is for protecting personnel if there is an unlikely
failure in either the cabling or enclosure insulation. Do not directly connect this ground
connection to the negative DC terminal. This safety wire is to be connected to earth ground.
Important Information Prior to Connecting to Batteries
DC Cable Gauge
Minimize cable losses by using the thickest wire available, and the shortest practical length. If
the inverter and the battery are positioned within four feet of each other, a minimum of 0 gauge
(zero gauge) insulated copper wire should be used to make the connections. If the round trip
distance is longer than 4 feet, heavier wire will be required.
General Information
Loose connections will result in a severe voltage drop that can cause damage to connectors,
conductors, and insulation and can cause sparking. Make sure all cables are the proper gauge
and plan to have the ANL fuse holder within one foot of the battery bank’s Positive (+) terminal.
All cable ends need to be stripped of insulation for approximately ¾ of an inch to have
appropriate sized ring terminals crimped onto the bare cable ends. Appropriately sized socket
wrenches should be used to carefully tighten the retaining nuts on the terminals of the battery
bank, fuse holder and DC terminals on the back panel of the inverter.
CAUTION
Reverse polarity connection will blow the fuses in the inverter and can permanently damage the
inverter. Damage caused by reversed polarity will void the warranty.
