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Saft SBL User Manual

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Nickel-cadmium block battery
Technical manual

Table of Contents

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Saft SBL Specifications

General IconGeneral
BrandSaft
ModelSBL
CategoryBattery Pack
LanguageEnglish

Summary

1. Introduction

2. Benefits of the Block Battery

2.1 Reliability and Long Lifetime

Highlights reliability and exceptionally long lifetime of the block battery.

2.2 Low Maintenance and Wide Temperature Range

Covers reduced maintenance needs and wide operating temperature capabilities.

2.3 Resistance to Abuse and Simple Installation

Details tolerance to electrical/mechanical abuse and ease of installation.

2.4 Cost-Effectiveness and Environmental Safety

Focuses on cost-effectiveness, low life-cycle cost, and environmental safety.

3. Electrochemistry of Nickel-Cadmium Batteries

4. Construction Features of the Block Battery

Key Construction Components Overview

Overview of major construction elements: containers, vents, plates, and buses.

Plate Assembly and Connection Details

Details on plate group bus, separating grids, plate frames, and tabs.

Cell Container, Splash Guard, and Vents

Features of cell containers, splash guards, and flame arresting vents.

4.1 Plate Assembly

4.2 Separation

4.3 Electrolyte

4.4 Terminal Pillars

4.5 Venting System

4.6 Cell Container

5. Battery Types and Applications

Performance Ranges: SBL, SBM, SBH

Introduction to the three performance ranges: SBL, SBM, and SBH.

Railway and Transport Applications

Suitability for railways, intercity and urban transport.

Industrial and Utilities Applications

Suitability for industry, utilities, oil/gas, and buildings.

Telecom, Medical, and Military Applications

Suitability for telecom, medical, airport, and military uses.

5.1 Type L

5.2 Type M

5.3 Type H

5.4 Choice of Type

6. Operating Features

6.1 Capacity Rating and Definition

Definition and rating of block battery capacity in ampere-hours (Ah).

6.2 Cell Voltage Explanation

Explanation of cell voltage based on electrochemical potentials.

6.3 Internal Resistance Factors

Factors affecting internal resistance and its measurement.

6.5 Short-Circuit Values

6.6 Open Circuit Loss

6.7 Cycling Performance

6.8 Effect of Temperature on Lifetime

6.9 Water Consumption and Gas Evolution

7. Battery Sizing Principles in Stationary Standby Applications

7.1 The Voltage Window

Definition of acceptable voltage range for system operation.

7.2 Discharge Profile Requirements

Required electrical performance for the application.

7.3 Temperature Influence on Sizing

Influence of ambient temperature on battery sizing.

7.4 State of Charge or Recharge Time

Requirements for battery state after discharge.

7.5 Aging Considerations

7.6 Floating Effect Impact

8. Battery Charging

8.1 Charging Generalities

General principles and methods for charging block batteries.

8.2 Constant Voltage Charging Methods

Discussion of single and two-rate constant voltage charging methods.

8.4 Charge Efficiency

8.5 Temperature Effects on Charging

8.6 Commissioning Charge

9. Special Operating Factors

9.1 Electrical Abuse Considerations

Effects of ripple, over-discharge, and overcharge on the battery.

9.2 Mechanical Abuse Considerations

Tests for shock loads, vibration resistance, and external corrosion.

10. Installation and Storage

10.1 Batteries on Arrival and Inspection

Procedures for checking batteries upon receipt and initial inspection.

Battery Storage Guidelines

Guidelines for storing filled and discharged battery cells.

Preparation of Cells After Storage

Steps for preparing cells after storage before use.

10.2 Cell Oil Application

Purpose and application of cell oil for reduced self-discharge.

10.3 Emplacement Requirements

10.4 Ventilation Requirements

10.5 Preparation for Service

Filled Cells Preparation for Service

Steps to prepare filled cells before commissioning.

Discharged/Empty Cells Preparation for Service

Steps to prepare discharged/empty cells before commissioning.

11. Maintenance of Block Batteries in Service

11.1 Cleanliness and Mechanical Checks

Maintaining cleanliness and mechanical integrity of cells.

11.2 Electrolyte Topping-Up Procedures

Procedures and considerations for topping up electrolyte levels.

11.3 Capacity Check Procedure

11.4 Changing Electrolyte

11.5 Recommended Maintenance Procedure

Yearly Maintenance Tasks

Periodic Maintenance Tasks (5 Years/As Required)

As Required Maintenance Tasks

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