Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Saft Sunica.plus
Summary of Contents for Saft Sunica.plus
- Page 1 Sunica.plus Technical manual May 2007...
-
Page 2: Table Of Contents
Contents 1. Introduction 7. Special operating factors 7.1. Electrical abuse 2. The photovoltaic application 7.1.1. Ripple effects 3. Construction features of the Sunica.plus 7.1.2. Over-discharge battery 7.1.3. Overcharge 3.1. Plate assembly 7.2. Mechanical abuse 3.2. Separation 7.2.1. Shock loads 3.3. -
Page 3: Introduction
Its photovoltaic battery product with characteristics of the Saft unique features enable it to be major improvements including: Sunica.plus battery to enable a used in applications and successful photovoltaic system environments untenable for up to 4 years without topping- to be achieved. -
Page 4: The Photovoltaic Application
2. The photovoltaic application The typical requirements for A photovoltaic system is made up the battery plays a crucial part in photovoltaic (PV) applications are of three distinct parts: this requirement as premature ruggedness, environmental failure of the battery results in a flexibility, unattended operation, The photovoltaic array which is total failure of the system. -
Page 5: Construction Features Of The Sunica.plus Battery
Prevents external short-circuits. Flame arresting vent With transport seal protection. Handles Moulded polypropylene handles allow Sunica.plus batteries to be easily manoeuvred and installed. Plate group bus Connects the plate tabs with the terminal post. Plate tabs and terminal posts are projection welded to the plate group bus. -
Page 6: Plate Assembly
These plates are then welded to The separator is a key feature The nickel-cadmium cell consists a current carrying bus bar of the Sunica.plus battery. It is a of two groups of plates, one assembly which further ensures polypropylene fibrous material... -
Page 7: Electrolyte
3.4. Terminal pillars 3.6. Cell container The electrolyte used in Short terminal pillars are welded Sunica.plus is built up using the Sunica.plus, which is a solution of to the plate bus bars using the well proven block battery potassium hydroxide and lithium well established block battery construction. -
Page 8: Benefits Of The Sunica.plus Battery
Complete reliability Charge efficiency Low installation costs Does not suffer from the sudden Good charge efficiency at normal Sunica.plus can be used with a death failure associated with temperatures and excellent wide range of photovoltaic other battery technologies. charge efficiency at low... -
Page 9: Operating Features
5. Operating features 5.1. Capacity The internal resistance of a Sunica.plus cell when measured The Sunica.plus battery capacity at normal temperature is is rated in ampere hours (Ah) Ω divided by approximately 300 m and is the quantity of electricity the capacity (Ah). -
Page 10: Effect Of Temperature On Performance
5.4. Effect of temperature De-rating factor on performance Variations in ambient temperature affect the performance of Sunica.plus and this must be allowed for in the End voltage 1.14 V battery engineering. End voltage 1.16 V End voltage 1.18 V Low temperature operation has End voltage 1.20 V... -
Page 11: Short Circuit Values
The open circuit loss for Sunica.plus for normal The typical short circuit value in temperature and the higher amperes for a Sunica.plus cell is temperature which may be approximately 9 times the experienced in a photovoltaic ampere-hour capacity, e.g. for a application is shown in Figure 3. - Page 12 The test consists of a period with a high state of 900 1050 1200 1350 1500 1650 1800 1950 Number of cycles Figure 5 - Sunica.plus cycling to IEC Standard 61427...
-
Page 13: Effect Of Temperature On Lifetime
5.8. Effect of temperature Percentage of + 25 ° C (+ 77 ° F) lifetime on lifetime Sunica.plus is designed as a Nickel-cadmium twenty year life product but, as with every battery system, increasing temperature reduces the expected life. However, the Lead acid... -
Page 14: Water Consumption
0.366 cc of water. However, due During charging, more ampere to the recombination separator hours is supplied to the battery used in the Sunica.plus battery, than the capacity available for the water usage will be discharge. These additional considerably less than this. -
Page 15: Battery Charging
6. Battery charging 6.1. Charging generalities In practice, as the charging The following example gives an current depends on the sun illustration. The photovoltaic array converts irradiance and the charging time solar irradiance into dc electrical on the light duration, the charge The battery has to be defined to power at a predetermined range voltage is left as the main... -
Page 16: Charge Efficiency
6.2. Charge efficiency Ah efficiency will be modified. The charge efficiency of Sunica.plus is dependent on the state of charge of the battery and the temperature. For much of its charge profile it is recharged at a high level of efficiency. -
Page 17: Temperature Effects
1.6 V 90 % min >90 % It is important to note that the Table 3 - Typical Ah efficiencies under different application conditions charging efficiency of Sunica.plus is not reduced with time and so temperatures due to the compensation of the charge... -
Page 18: Regulators
1.65 V per cell) Typical threshold values for a Float threshold 14.1 V 28.2 V 56.4 V battery system with Sunica.plus (by 1.55 V per cell) defined for 5 days or more Battery reconnect threshold 13 V 26 V 52 V autonomy is shown in Table 5. -
Page 19: Special Operating Factors
In general, any reduce the life of a VRLA battery. commercially available charger In the case of Sunica.plus, with or generator can be used for its generous electrolyte reserve, commissioning or maintenance a small degree of overcharge will charging of Sunica.plus. -
Page 20: Battery Sizing Principles
As a guideline, an optimised to select the right battery the average daily insolation, the charge voltage will allow to keep Sunica.plus from the minimum battery size is that which a state of charge by 90 to 95 % performance table. -
Page 21: Battery Sizing Example
8.3 Battery sizing example Charge adjustment Charge voltage calculation If the charge voltage is in The daily depth of discharge is In this case we consider a accordance with the calculated according to the telecom application, but this is recommended value methodology given in typical of many applications. -
Page 22: Installation And Storage
The level Note that special regulations for to excessive heat. Sunica.plus should be at least 15 mm above ventilation may be valid in your the minimum level mark and... -
Page 23: Commissioning
9.4. Commissioning When the charger maximum The battery should then be voltage setting is too low to supply charged in good sunshine A good commissioning charge is constant current charging, divide conditions. During this operation, important. Charge at constant the battery into two parts to be the Ah charged shall be in the current is preferable. -
Page 24: Maintenance Of Sunica.plus Batteries In Service
10. Maintenance of Sunica.plus batteries in service In a correctly designed standby Cell electrolyte levels should be application, Sunica.plus requires checked visually to ensure that the minimum of attention. the level is above the minimum and if necessary the cells should However, it is good practice with be topped-up. - Page 25 Regarding industrial Ni-Cd batteries, Saft has had partnerships for many years with collection companies in most EU countries as well as in North America.