Yuasa NP, NPL, SWL, FXH, RE, EN, ENL, UXL and UXF Installation, Commissioning and Maintenance Guide
Storage
If the batteries are not to be installed immediately, keep them boxed and store in a cool, clean and dry place.
If the batteries are to be stored for six months or more they will need a supplementary charge prior to installation as outlined in Section 3.
Unpacking and Inspection
DANGER: BATTERIES ARE ELECTRICALLY LIVE AT ALL TIMES. DO NOT SHORT CIRCUIT THE BATTERY TERMINALS
Inspect the battery consignment for obvious signs of transit damage. Ensure the consignment has all items listed on the advice note or invoice, ie batteries, cables, shrouds etc.
Unpack each battery taking care not to drop on the terminals. Inspect each battery for physical damage such as cracks or distortion of the case and terminals.
Measure the battery open circuit terminal voltage which should be > 2.1 volts/cell (12.6 volts for a 6 cell battery). If any batteries are lower they will need a supplementary charge prior to installation.
Supplementary Charge
To ensure maximum service life a supplementary charge may be required prior to installation. Apply a supplementary charge if:
- The batteries have been in storage 6 months or more.
- The battery open circuit voltage is under 2.1 volts per cell.
A supplementary charge should be applied in accordance with figures shown in Tables below.
SUPPLEMENTARY CHARGE FOR THE UXL BATTERIES at 20ºC
| STORAGE PERIOD | CHARGE VOLTAGE PER CELL | CHARGE TIME |
| NOT MORE THAN ONE YEAR | 2.245V/CELL2.28 V/CELL | MORE THAN 3 DAYS2-6 DAYS |
| 1-2 YEARS | 2.28 V/CELL | 3-6 DAYS |
SUPPLEMENTARY CHARGE FOR THE EN/ENL BATTERIES at 20ºC
| STORAGE PERIOD | CHARGE VOLTAGE PER CELL | CHARGE TIME |
| NOT MORE THAN ONE YEAR | 2.26 V/CELL2.31 V/CELL | MORE THAN 3 DAYS2-6 DAYS |
| 1-2 YEARS | 2.31 V/CELL | 3-6 DAYS |
SUPPLEMENTARY CHARGE FOR NP, NPL, SWL, FXH, REC, Yucel & UXF BATTERY at 20ºC
| STORAGE PERIOD | CHARGE VOLTAGE PER CELL | CHARGE TIME | |
| NOT MORE THAN ONE YEAR | 2.275 V/CELL | MORE THAN 3 DAYS | |
| 1 YEAR | 2.35 V/CELL | 2-6 DAYS | |
| 1-2 YEARS | 2.4V/CELL | 2 DAYS + 2 DAYS @2.275vpc |
After the charge period, check that the battery open circuit voltage is above 2.1 volts/cell.
Pre-installation Check List
WARNING!
All battery types supplied with integral handles must not be installed suspended from their handles. The handles are designed to facilitate manual handling during the installation of the batteries and not as a permanent means of suspension of the batteries.
DANGER: BATTERIES ARE ELECTRICALLY LIVE AT ALL TIMES. DO NOT SHORT CIRCUIT THE BATTERY TERMINALS.
UNDER NO CIRCUMSTANCES SHOULD BATTERIES BE CHARGED IN A SEALED CONTAINER.
The batteries in the UPS should be installed in a dry and adequately ventilated area, with an operational temperature of between 20°C and 25°C.
CAUTION
Battery operational temperature over 25°C will have a severe detrimental effect on battery service life, see Table in Section 5.1
Installation and Connection
A wire brush should be used on all battery terminals to remove any oxidation layers. Application of a non oxidising grease (such as Vaseline) in not necessary. However there may be some installations where there are corrosive compounds/elements nearby or in the atmosphere. In these special cases it is recommended that a non oxidising grease is used.
When fastening connectors provided to battery terminals an INSULATED SPANNER must be used.
When installing batteries remove any jewellery and watches.
When connecting the batteries, free air space must be provided between each battery. The recommended distance is 10mm
Since a battery may generate ignitable gases, do not install close to any items that produce sparks.
The battery case is made from ABS resin, do not place in an atmosphere with organic solvents or adhesive material.
SINGLE STRING BATTERY CONNECTION
When multiple numbers of batteries are being used, make connections as follows.
POSITIVE TERMINATION
Connect positive terminal (+) of battery No.1 securely to the positive terminal (+) of the charger/load.
INTERCELL CONNECTIONS
Connect the negative terminal (-) of battery No.1 securely to the positive terminal (+) of battery No. 2.
Following this procedure for each battery in sequence until the full string is connected. Note, the inter cell connectors may vary in length to accommodate the battery rack or cubicle configurations.
NEGATIVE TERMINAL
Connect the negative terminal (-) of the final battery securely to the negative terminal (-) of the charger or load.
MULTIPLE STRING BATTERY CONNECTION
The connection procedure in Section 4.1 and 4.2 should be followed for each of the multiple strings in this type of battery system.
Connect the positive termination cables together through a battery breaker or isolator switch.
FASTENING TERMINAL BOLTS
The following table shows the recommended torque settings for terminal nuts and bolts.
| BATTERY | BOLT DIAMETER | FASTENING TORQUE (Nm) |
| NP17-12 | M5 | 2.45Nm |
| NP/NPL24-12 | ||
| NP/NPL38-12 | ||
| SWL750, 1100 | ||
| NP/NPL65-12NPL130-6 | M6 | 4.76Nm |
| SWL1800, SWL1850 | ||
| FXH45-12FR, FXH100-12FRFXH155-12FR | M6 | 3.9-5.4Nm |
| SWL2500-12 | M6 | 6.0 Nm |
| EN/ENL RANGE | M8 | 6.1Nm |
| NPL78-12 | ||
| SWL2250, SWL3300 | ||
| FXH90-12FR, FXH140-12FR,FXH185-12FR, FXH190-12FRFXH200-12FR | M8 | 9.0-11.9Nm |
| NPL100-12NPL200-6 | M10 | 16.5Nm |
| UXF100-12UXF150-12 | M8 | 9.4 -14Nm |
Typical Bolt Assembly
Charging and Commissioning
After connecting the battery system a float charge voltage needs to be applied. This voltage may be calculated from the figures in the table below (figures at 20°C ).
FLOAT CHARGE VOLTAGE AT 20°C
| BATTERY TYPE | CHARGE VOLTAGE PER CELL |
| NP/NPL, SWL, FXH | 2.275 VOLTS/CELL |
| EN | 2.26 VOLTS/CELL |
| UXL | 2.245 VOLTS/CELL |
| UXH | 2.29 VOLTS/CELL |
| UXF | 2.275 VOLTS/CELL |
This value will be high enough to compensate for the battery’s self discharge and keep the battery in a fully charged condition. It should be noted that after applying the float charge voltage, full battery capacity may not be available for 72 hours. This is allowing for a charging and equalisation period.
Effect of temperature on float charge voltage and battery life
The float charge voltage stated in Section 5.0 relates to an operational temperature of 20°C. For other operational temperatures see the table below.
CAUTION: High operational temperature will have a severely detrimental effect on the battery life. This is also shown in the table below.
EFFECT OF TEMPERATURE ON FLOAT CHARGE VOLTAGE AND BATTERY LIFE.
| OPERATIONAL | TEMPERATURE COMPENSATED | |||
| TEMPERATURE | CHARGE VOLTAGE PER CELL | |||
| ºC | RE/NP/ SWL/UXF | UXL | EN | UXH |
| 0 | 2.335 | 2.305 | 2.32 | 2.35 |
| 5 | 2.32 | 2.29 | 2.305 | 2.335 |
| 10 | 2.305 | 2.275 | 2.29 | 2.32 |
| 15 | 2.29 | 2.26 | 2.275 | 2.305 |
| 20 | 2.275 | 2.245 | 2.26 | 2.29 |
| 25 | 2.26 | 2.23 | 2.245 | 2.275 |
| 30 | 2.245 | 2.215 | 2.23 | 2.26 |
| 35 | 2.23 | 2.2 | 2.215 | 2.245 |
| 40 | 2.215 | 2.185 | 2.2 | 2.23 |
| 45 | 2.2 | 2.17 | 2.185 | 2.215 |
| OPERATIONAL | ||||
| TEMPERATURE | EXPECTED BATTERY LIFE | |||
| ºC | NP | NPL/RE/SWL | EN/UXL/UXF | ENL |
| 0 | 5 YRS | 7-10 YRS | 12YRS | 15YRS |
| 5 | 5 YRS | 7-10 YRS | 12YRS | 15YRS |
| 10 | 5 YRS | 7-10 YRS | 12YRS | 15YRS |
| 15 | 5 YRS | 7-10 YRS | 12YRS | 15YRS |
| 20 | 5 YRS | 7-10 YRS | 12YRS | 15YRS |
| 25 | 5 YRS | 6-9 YRS | 10YRS | 10YRS |
| 30 | 3 YRS | 5-7 YRS | 8 YRS | 8 YRS |
| 35 | 2 YRS | 4-6YRS | 6YRS | 6YRS |
| 40 | 1 YRS | 2-3YRS | 4YRS | 4YRS |
| 45 | <1 YR | 1-2YRS | 2YRS | 2YRS |
*UX denotes UXL and UXH
Setting a cut off voltage
Towards the end of a battery discharge the voltage will begin to fall below its nominal value. To prevent deep discharging the battery system a cut off voltage needs to be set. This will depend on the discharge rate. Typically the higher the discharge rate the lower the cut off voltage can be used. A good average cut off voltage is 1.7 volts/cell.
CAUTION: The minimum cut off voltage is 1.6 volts/cell to prevent possible permanent damage and reduction of service life.
COMMISSIONING LOG SHEETS
See appendixes 1,2 & 3.
Inspection and Maintenance
To prevent battery problems the inspection and maintenance procedures outlined need to be implemented. With each six month inspection, please complete the voltage log sheet provided. This will act at a historical record of the battery system and will help foresee any problem areas before they fully develop.
Customer Services
Please contact our Technical Department if you have any queries concerning your battery system on telephone number +390238009108 or visit our website – www.yuasaeurope.com E-mail address: info@yuasa.it
