Conext SW 4024-120 Install Guide
Table Of Contents
- Conext™ SW Inverter/Charger
- Exclusion for Documentation
- Document Number: 975-0639-01-03 Revision: Date: 5-2020
- Contact Information solar.schneider-electric.com
- Information About Your System
- About This Guide
- Important Safety Instructions
- Safety Information
- Precautions When Working With Batteries
- FCC Information to the User
- Installation
- Materials List
- Conext SW Front and Side Panels
- Conext SW Supplied Accessories
- Conext SW Required Accessory
- Installation Information
- Before You Begin the Installation
- Installation Codes
- Xanbus Network System
- Xanbus System
- Xanbus-enabled Products and Other Accessories
- Installation Planning
- Planning Preparations
- Components of the Inverter Power System
- Unpacking and Inspecting the Conext SW Inverter/Charger
- Installation Tools and Materials
- Inverter/Charger Installation
- Overview
- Step 1: Choosing a Location for the Inverter/Charger
- Step 2: Mounting the Inverter/Charger
- Step 3: Connecting the AC Input and AC Output Wires
- AC System Bonding
- Step 4: Installing the DC Switchgear and Connecting the DC Cables
- Step 5: Connecting the BTS and Xanbus-enabled Components
- Step 6: Performing Checks Prior to Initial Start-Up
- Step 7: Testing Your Installation
- Battery Information
- Battery Bank Sizing
- Estimating Battery Requirements
- Restrictions on Motor Size
- Battery Cabling and Hook-up Configurations
- Specifications
- Inverter Specifications
- Charger Specifications
- AC Transfer Specifications
- Physical Specifications
- Environmental Specifications
- Regulatory
- Wiring Diagrams
- Single-Inverter System (Off-Grid/Power Backup)
- Single-Inverter System Renewable Energy (Solar)
Battery Information
975-0639-01-03 1–35
This guide for use by qualified personnel only
Estimating Battery Requirements
Calculating Battery Size
Step 1:
Compute
Amp-hours
For each appliance, compute the number of amp-hours that will be used between
charging cycles, as follows:
1. Obtain the wattage. If the wattage is marked on the nameplate rating, use that.
Otherwise, multiply the marked voltage and amperage:
WATTS = VOLTS × AMPS.
2. Obtain the Watt-hours by multiplying that amount by the hours the appliance will be
used:
WATT-HOURS = WATTS × HOURS.
3. Obtain the amp-hours that the appliance requires by dividing that amount by 20
(the factor for the Conext SW, which is a 24-volt system):
BATTERY AMP-HOURS USED = AC WATT-HOURS/20
For example, a 100 W light bulb that is used for 4 hours will use 400 watt-hours (Wh)
and the inverter will consume approximately 20 Ah from a 24-volt battery.
4. Enter this information on the blank calculation worksheet (page 1–37).
Step 2:
Calculate
Battery
Size
5. Complete the rest of the worksheet; see Table 1-4, “Battery Sizing Example” on
page 1–36 for an example.
Size the batteries for approximately twice the estimated total amp-hour usage. Doubling
the expected amp-hour usage ensures that the batteries will not be overly discharged
and extends battery life.
Do not skip this doubling step. More capacity is better since you will have more reserve
capacity, be better able to handle large loads and surge loads, and your battery won’t
be discharged as deeply. Battery life is largely dependent on how deeply the battery is
discharged. The deeper the discharge, the shorter the battery life.
Troubleshooting If you find that the system shuts down when appliances with large
motors are started, the problem may be that this motor is too much for the battery. Even
though you calculated the amp-hour requirements appropriately, the startup of a large
motor makes high demands on the battery. You may find that adding more amp-hours
(in the form of extra batteries or replacement with a bigger battery) solves the problem.