Delta Battery Backups

Delta battery backups are designed to provide uninterrupted power to submersible sump pumps during mains power failure. They automatically switch to battery power, ensuring continued operation of drainage systems and helping to prevent flooding. All units operate with 230 VAC single-phase supply and are compatible with Delta sump pumps and packaged pump stations. Two ranges: UPS units for shorter outages and higher-capacity Battery Backups for extended runtime.

Models Available

UPS Range (Compact units for typical short-duration outages)

• Delta UPS V3

• Delta UPS V4/6

Battery Backup Range (Higher capacity units with extended runtime options, including Plus versions)

• Delta Battery Backup V3 (standard, Plus and XL)

• Delta Battery Backup V4/6 (standard, Plus and XL)

• Delta Battery Backup Foul V3

Key Specifications

Delta UPS V3 (DMS E021)

• For 1 × Delta V3 pump (180 W)

• Continuous runtime: 30 minutes (at 3.5 m head)

• Intermittent runtime: ~30 hours

Delta UPS V4/6 (DMS E022)

• For 1 × Delta V4 (360 W) or V6 (500 W) pump

• Continuous runtime: 30–60 minutes (at 3.5 m head)

Delta Battery Backup V3 Standard (DMS E023)

• For 1 or 2 × V3 pumps (not simultaneously)

• Continuous runtime: 60 minutes (at 3.5 m head)

• Intermittent runtime: 60 hours

Delta Battery Backup V3 Plus (DMS E024)

• For 1 or 2 × V3 pumps (not simultaneously)

• Continuous runtime: 120 minutes (at 3.5 m head)

• Intermittent runtime: 120 hours

• 2 × 100 Ah batteries

Delta Battery Backup V3 Plus XL (DMS E025)

• Compatible with: 1 or 2 × Delta V3 pumps (180 W) – not simultaneously

• Continuous runtime: ~240 minutes (4 hours) at 3.5 m head

• Intermittent runtime: ~240 hours (10 days)

• Output: 2000 VA / 1600 W

Delta Battery Backup V4/6 Standard (DMS E026)

• For V4 and V6 pumps

• Continuous runtime: ~45 minutes (V4 at 3.5 m head)

• Intermittent runtime: 1.5 days

Delta Battery Backup V4/6 Plus (DMS E027)

• For V4 and V6 pumps

• Continuous runtime: ~90 minutes (V4 at 3.5 m head)

• Extended runtime compared to standard version

Delta Battery Backup V4/6 Plus XL (DMS E028)

• Compatible with: 1 or 2 × Delta V4 or V6 pumps (not simultaneously)

• Continuous runtime: ~140–180 minutes (at 3.5 m head, model dependent)

• Intermittent runtime: ~140–180+ hours (up to 7+ days) – PCA guidance

• Battery: Large multiple battery bank (3 × 100 Ah)

• Output: Suitable for up to 500 W pumps

Delta Battery Backup Foul V3 (DMS E030)

• For 1 × Foul V3 pump (750 W)

• Continuous runtime: 30 minutes (at 3.5 m head)

• Intermittent runtime: >3 days (typical duty cycle)

Range Comparison

Standards & Compliance

All models comply with:

• BS 8102:2022 (Type C drained protection)

• NBS R18 (Clause 310)

• Low Voltage Directive 2014/35/EU

• EMC Directive 2014/30/EU

• IEC/EN 62040-1 (Safety) and IEC/EN 62040-2 (EMC)

• RoHS compliant

System Design Guidance

• Selection: Choose UPS units for typical short outages. Select Battery Backup standard versions for moderate risk and Plus variants for higher-risk or deeper habitable basements requiring longer autonomy.

• Integration: Compatible with single or dual (duty/standby) pump systems. Includes volt-free contacts for remote monitoring and integration with high-level alarms.

• Installation: Wall-mountable or floor-standing. Automatic mains detection and switchover. Maintenance-free lead-acid batteries with quick recharge.

• Best Practice: BS 8102:2022 recommends backup power in occupied below-ground spaces alongside primary/secondary pumps and high-level alarms.