05. 12 19 WDD Battery Specification 2024.pdf

Ward Delivery Substation

Station Battery

9/17/2024

North Dakota Maintenance Office

1. Ward Battery:

1.1. Battery: The battery shall be a Flooded Lead-Acid, stationary type with lead-calcium alloy grids, and equivalent to the Enersys EC-9M style battery. The battery will be designed for switchgear and control applications in high voltage and extra high voltage electrical power substations. The battery will also be designed for constant voltage charging in “float” service.

1.1.1. Voltage: 125-volt DC, ungrounded system, with a float voltage of 2.21 – 2.30 volts per cell

1.1.2. Cells: 58 cells, flame retardant plastic

1.1.3. Nominal Capacity: Minimum 365 AH nominal eight-hour capacity to 1.75 volts per cell

1.1.4. Accessories:

1.1.4.1. Intercell connectors and connector bolts

1.1.4.2. Terminal plates: main external cable connections to 4/0 copper wire

1.1.4.3. Cell numbers with polarity indicators

1.1.4.4. Non-Corrosive grease

1.1.4.5. Any lifting straps and hardware

1.1.4.6. Assembly hardware

1.1.4.7. Easily removable transparent terminal cover

1.1.5. Rack Assembly:

1.1.5.1. The rack shall be qualified according to “UBC” seismic rating formerly applicable to Zone 0/IEEE 693 “low”. The battery location has a level concrete floor.

1.1.5.2. Either standard galvanized steel racks or acid-resistant painted steel racks are acceptable. The rack shall be provided with a grounding bar or equivalent grounding connection.

1.1.5.3. This rack will be two-step rack installed such that there are 2 rows consisting of 29 cells in each row.

1.1.5.4. Dimensions: Height not to exceed 3’, width not to exceed 4’-0”, and length not to exceed 15’.

1.1.6. Spill Containment: A liquid tight formed steel barrier spill containment barrier (dam) with a corrosive resistant liner shall be provided. The liner shall be approximately 80 mil thick, and factory formed. The barrier shall be 4” high and extend at least 1” beyond the rack in all directions. When installed the barrier and all hardware shall be covered with an acid-resistant protective coating. The barrier shall be designed for installation without drilling holes for anchors.

The supplier shall provide the adhesive for installation of the metal barriers. Adhesives provided shall contain no Volatile Organic Compounds (VOC) and shall be able to resist 98% sulfuric acid in continuous immersion. The supplier shall provide adequate amounts of coating material to coat battery legs and bracing.

North Dakota Maintenance Office

The supplier shall provide adequate amounts of absorbent mats for the interior of the spill containment area, with an additional 10% for spares. The absorbent pads shall change color when exposed to electrolyte.

1.2. Documentation:

1.2.1. Supply paper copies of all manuals, drawings, and instructions with shipment of materials

1.2.2. Supply electronic copies of all manuals, drawings, and instructions to tkeller@wapa.gov and wageman@wapa.gov

1.3. Delivery:

Attn: Brandon Foss

700 N Bismarck Expy Bismarck, ND, 58501

Shipper is to contact Travis Keller at 701-390-4429 or Tim Wageman at 701-221-4544, to verify the delivery site is ready for delivery, to refine the delivery destination directions, and to coordinate delivery at least seven days prior to delivery. Delivery shall be made between 8:00 a.m. and 2:30 p.m. Monday through Thursday, excluding Government holidays.

mailto:tkeller@wapa.gov mailto:wageman@wapa.gov