Built-in Isobar® premium AC surge protection and Auto Transfer Switching option for battery backup / UPS operation
Tested to power inverter standards UL458 (USA) and CSA (Canada)
High reliability large-transformer design with protected DC and AC wiring terminals
Features
RV1250ULHW serves as an automotive or stationary DC-to-AC inverter with automatic line-to-battery transfer and integrated battery charger
Supports 120V AC output from a 120V AC line power source or 12V DC battery source
16.6 millisecond automatic transfer between line and battery power supports UPS protection during blackouts and voltage fluctuations for equipment compatible with a one cycle transfer time
1250 watts continuous AC output in inverter mode, 2400 watts continuous AC output in AC mode
Double Boost inverter output supports momentary startup loads up to 200% of the continuous rating for up to 10 seconds
OverPower inverter output supports longer duration overloads to 150% for 1-60 minutes under ideal battery and temperature conditions. (For best results, utilize OverPower usage for as short of a duration as possible, ensure battery bank and cabling is able to provide full nominal DC voltage under load and allow inverter/charger to fully cool before and after OverPower usage.)
3 stage, selectable 14/55 amp battery charger with adjustable settings for wet/gel battery types offers fast, reliable battery recharging
Protected hardwire bolt-down input lugs safely accept heavy gauge input wiring from attached battery bank
Protected hardwire output passes 120V line power or inverter output through to connected equipment
Reliability enhanced large-transformer design tested to UL (USA) and CSA (Canada) standards
Moisture-resistant construction enables vehicular or marine operation in high humidity environments
3 position operating mode switch supports “AUTO” mode to enable automatic transfer between DC and AC modes, CHARGE-ONLY to maintain a full battery charge when AC is present without auto transfer and SYSTEM OFF settings
Set of six front panel LEDs display AC/DC operational modes, overload status, DC voltage level, shutdown status and system fault status
Set of 4 configuration dipswitches support wet/gel battery charging profiles, adjustable 135/145V high voltage auto transfer during overvoltages and selectable 75/85/95/105V AC low voltage auto transfer during brownouts
Set of 4 additional configuration dipswitches support 4 levels of charger limiting relative to output load size, a battery equalization program and battery charger low/high settings
Resettable 12A charger AC input breaker and resettable 20A AC output breaker and automatic 2 speed cooling fan protect the inverter from load and temperature related failures
Grounding lug properly connects the inverter/charger system to earth ground or vehicle grounding system
Automatic overload and thermal shutoff safely turns off inverter as excessive loads or overheating conditions develop
Front panel remote control connector enables remote off/on switching (requires APSRM4 switch accessory). Optional APSRM4 accessory also includes user configurable jacks to support inverter shutoff or startup as a vehicle ignition is engaged
Front panel remote control connector enables remote off/on switching (requires APSRM4 switch accessory). Optional APSRM4 accessory also includes user configurable jacks to support inverter shutoff or startup as a vehicle ignition is engaged
Load sensing control dial enables adjustable load threshold required to automatically turn the inverter on and off in DC mode as load conditions change
Includes battery temperature sensor with 20-ft. (6.09 m) cable to prolong battery life by adjusting the charge level based on battery temperature
Automatic Generator Starter jack enables user configuration of automatic generator startup as inverter batteries drop to 11.5VDC and generator shutoff as inverter batteries are recharged to 14.1VDC
DC INPUT: Full continuous load – 95A at 12V DC. AC INPUT: 20 amps at 120V AC with full inverter and charger load (12A max charger-only / combined input load to support charger and AC output is automatically controllable to 66%-33%-0% based on AC output lo
Recommended Electrical Service
DC INPUT: Requires 12V DC input source capable of delivering 95A for the required duration (when used at full continuous capacity – DC requirements increase during Over-Power and Double-Boost operation). For automotive applications, professional hardwire
Input Connection Type
DC INPUT: Set of 2 DC bolt-down terminals. AC INPUT: hardwire
Input Cord Length Details
DC INPUT: User supplies cabling. 4 gauge or larger (see manual). AC INPUT: hardwire
Voltage Compatibility (VAC)
120
Voltage Compatibility (VDC)
12
Frequency Compatibility
60 Hz
Pure Sine Wave Output
No
Output (Watts)
1250
Nominal Output Voltage(s) Supported
120V
Output Receptacles
Hardwire
Continuous Output Capacity (Watts)
1250
Peak Output Capacity (Watts)
2500
Output Voltage Regulation
LINE POWER (AC): Maintains 120V nominal sine wave output from line power source. INVERTER POWER (AC): Maintains PWM sine wave output voltage of 120 V AC (+/-5%).
Output Frequency Regulation
60 Hz (+/- 0.3 Hz)
Overload Protection
Includes 12A input breaker dedicated to the charging system and 20A output breaker for AC output loads
Expandable Runtime
Yes
Expandable Battery Runtime
Runtime is expandable with any number of user supplied wet or gel type batteries
Expandable Runtime Description
Runtime is expandable with any number of user supplied wet or gel type batteries
DC System Voltage (VDC)
12
Battery Pack Accessory (Optional)
98-121 sealed lead acid battery (optional)
Battery Charge
14A / 55A (selectable)
LVC (Low Voltage Cut-Off)
10VDC +/-3%
Front Panel LEDs
Set of 6 LEDs offer continuous status information on load percentage (6 levels reported) and battery charge level (7 levels reported). See manual for sequences.
Switches
3-position on/off/remote switch enables simple on/off power control plus auto/remote setting that enables distant on/off control of the inverter system when used in conjunction with APSRM4 accessory (sold separately) in inverter mode.
AC Suppression Joule Rating
600
Material of Construction
Polycarbonate
Cooling Method
Multi-speed fan
Form Factors Supported
Mounting slots enable permanent placement of inverter on any horizontal surface (see manual for additional mounting information)
Shipping Dimensions (hwd / cm)
32.00 x 26.67 x 27.18
Shipping Weight (kg)
11.34
Unit Dimensions (hwd / cm)
17.78 x 22.23 x 22.86
Unit Weight (kg)
10.57
Relative Humidity
0-95% non-condensing
Transfer Time (Line Power to Battery Mode)
16.6 milliseconds (typical – compatible with many computers – verify transfer time compatibility of loads for UPS applications)
Low Voltage Transfer to Battery Power
In AC "auto" mode, inverter/charger switches to battery mode as line voltage drops to 75V (user adjustable to 85, 95, 105V – see manual)
High Voltage Transfer to Battery Power
In AC "auto" mode, inverter/charger switches to battery mode as line voltage increases to 135V (user adjustable to 145 – see manual)
Load Sensing
Optional load sense function enables automatic inverter shutoff and startup as connected equipment is powered off and on. Front panel load sense potentiometer can be set to shutoff or turn on inverter power in response to loads of any level.
Product Certifications
CSA (Canada); UL 458
Product Compliance
RoHS
Product Warranty Period (U.S. & Canada)
30-month limited warranty
WEXT1E
Extended Warranty and Technical Support for Select Products – KVM, PDU, Inverters
WEXT2E
Extended Warranty and Technical Support for Select Products – KVM Switches, PDUs, Power Inverters
WEXT3E
Extended Warranty and Technical Support for Select Products – KVM Switches, PDUs, Power Inverters
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