Powersafe EC
The PowerSafe™ EC is a lead calcium battery designed to meet the varied needs of the utility switchgear and telecom markets. The positive plate thickness of 0.340 inches is one of the thickest in the industry. This makes the battery an excellent long duration discharge battery. Additionally, copper inserts within the posts maintain excellent short duration high current performance. EnerSys’ larger, double-hole post also provides a stronger intercell connection, assuring maximum electrical integrity.
The EC also features EnerSys’ Slide-Lock™ post seal. This unique design allows for natural plate growth over the battery’s life without compromising the seal between the post and cover. Extra space is also provided in the cell to increase the amount of electrolyte available and provide ample space for natural growth. All these features help to extend the life of the battery and increase performance.
Features
• Lead-calcium alloy – lowest water loss, lowest maintenance.
• Highest one minute rates.
• For floating applications where increased ambient temperatures are not probable.
• 20 year life expectancy.
• Slide-Lock™ Post Seal.
Specifications
Plate thickness:
Positive: 0.34 in/8.6 mm
Negative: 0.24 in/6.1 mm
Plate dimensions:
Height Width
Pos: 11.4 in/290 mm 9.4 in/239 mm
Neg: 11.4 in/290 mm 9.4 in/239 mm
• Sediment space: 1.0 in/25.4 mm
• Electrolyte over plates: 2.1 in/53.3 mm
Container:
Styrene Acrylonitrile Copolymer
• Cover: Made from Flame Retardant PVC (UL94-VO/L.O.I. 28%)
• Separators: Microporous rubber
• Retainers: “Vitrex”- glass fiber
• Post type:
EC-5 thru 13 – single post with copper insert
EC-15 thru 21 – double posts with copper inserts
• Post seal type: Slide-Lock™
• Plate suspension type:
Positive: Bridge hung
Negative: Bottom supported
• Vent type: Flame arrestor, fused alumina
• Float voltage setting:
Acceptable min/max: 2.17/2.26Vpc
Recommended: 2.25Vpc
• Specific Gravity: 1.215 (1.250 available on request)
• Bolt connectors: Stainless steel, standard English measure, hex-head
• Intercell connectors: Lead-plated copper
NOTE: All inter-cell, inter-tier, inter-step, end-to-end inter-rack, back-to-back inter-rack connectors,
and terminal plates are included with every battery. Across-aisle inter-rack connectors
are not included.
