P600 - 12

12Volt alternator performance graph

Notes: Output below engine idle Rpm is only shown for interest as it is not usable. Output above engine idle is also ignored as it requires higher Rpm to achieve (See FAQ’s). Only voltage at 12V and higher is considered for the graph

P600 - 24

24Volt alternator performance graph

Notes:  Output below idle Rpm is only shown for interest Output above idle is also ignored because it requires higher Rpm (See FAQ’s) Only voltage >24V is used for the graph

P600 Flame Proof Alternators

The   P600 Alternator    was   specifically   developed   to   meet the   challenges   of   inadequate   supply   power   on   flame proof   machines;   we   use   cutting   edge   design   to   meet, and   exceed,   the   DC   power   demands   of   modern   and traditional Flame proof machines.   Design philosophy     Build   an   alternator   that   will   provide   full   load and desired voltage at engine idle Where    traditionally    FP    alternators    only    had    to supply    power    for    lighting,    new    legislation    and safety    awareness    have    introduced    an    array    of electronic   equipment   to   machines.   (This   resulted in    an    increase    in    the    power    demands    on    FP alternators.) Electronic      equipment      performance      relies      on adequate   and   stable   power   supply   irrespective   of engine   Rpm.   These   increases   in   power   demands have   resulted   in   poor   performance   at   idle   speeds (Low voltage due to load) on some alternators. Because   safety   equipment   (Lights,   CAS   and   PDT systems)   are   mandatory,   it   increases   risk   to   end users     where     FP     alternators     fail     to     produce adequate power at idle Rpm. P600    Alternators     are    ready    to    install    with    minimum effort. • Retrofits onto existing brackets without modification. • No clamps to shift or brackets to move. • Easy belt alignment • Light weight - Kg 24 • Compact overall dimensions: Length = 270mm Diameter = 206mm) P600   alternators    are   available   in   12V   and   24V   and   both versions are available in Hydraulic drive. Totally    enclosed    design    (TEFC)    is    safe    to    use    (No exposed fans) FAQ’s • Maximum   (Peak)   power   versus   Continuous   (Usable) power? • Voltage or Power graphs? • What is Start-up? • Single or Dual output? • Why use two Alternators on a machine? • Alternator indicating lights? • Remote adjustment/monitoring? • Hydraulic driven alternator performance? • Is Load-dump relevant? Peak power versus usable power? Alternators   produce   power   as   a   function   of   rpm   and load. (Power   increases   linearly   as   the   rpm   increases   and   vice versa) Peak    (Max)    output    power    is    only    a    number    and    not useful to the end user as explained below: Flame   proof   (FP)   alternators   fitted   to   mining   machines have permanent loads coupled to them. This    means    that    the    connected    load,    will    demand sufficient   output   voltage   and   current,   at   engine   idle   or full operating Rpm from the alternator. (The    load    will    only    be    powered    at    a    specific    voltage once the engine spools up to a certain Rpm) Load    powering    capacity    at    engine    idle    is    crucial    for safety     equipment     fitted     to     machines.     (CAS,     PDT, Cameras, lights, etc.) FP   alternators   that   produce   low   voltage   at   engine   idle due    to    insufficient    power    capacity    renders    Electronic equipment   useless,   increasing   the   risk   to   the   end   user (who relies on correct functioning at any engine speed). The    P600        Alternator     was    developed    to    produce    its rated   power   at   engine   idle   and   will   supply   sufficient power   for   all   FP   mining   applications.   The   continuous rating    of    the    P600     ensures    that    the    voltage    will    be stable at idle or full rpm. Safety   systems   (CAS,   PDT,   Beacons,   and   Cameras)   are not   supposed   to   be   switched   off   at   any   time,   thus   the load   from   these   components   will   always   be   present. (Also see Load dump)

The curve below shows available output versus rated power at various speeds

Only output voltage of 12V and over is considered. Any output below engine idle is ignored and only shown for interest Peak power above the rated power is ignored (Only available at higher Rpm, not usable for CAS or PDT etc.)

Voltage or Power graphs: Alternator Voltage curves, without a connected load component, are useless to the end user. It gives no indication of what load the alternator will power at the various speeds, and if the voltage will remain stable (and usable) at that speed. P600 continuous (usable) power is not a number; it is determined by alternator design physics. This is where the alternator will provide enough voltage to power the connected load at idle Rpm. (No more guessing if the alternator will be adequate for the load at engine idle.) The P600 Alternator curve shown below indicates the load that the Alternator will supply at >12VDC and engine idle rpm.

What is Start-up? All Alternators start producing a voltage when exited by a battery or self-exited like an FP alternator.  (Low Voltage is generated at first and it gradually builds up as the speed increases to the set value.) As soon as a load is applied, the start-up point shifts to a higher Rpm. Maintaining a load and correct Voltage at start-up, is dependent on sound design philosophy and this is where the unique P600 excels. The P600  Alternator was specifically developed to allow low speed generation of power. Not only will the Voltage remain stable even at idle Rpm, the alternator will power sufficient loads for all mining applications.  P600 Alternators will power CAS and PDT systems, at the correct power levels, without the risk of the safety systems becoming unstable at idle. Lights will be at peak performance and  Electronic equipment will function as designed.  The importance of adequate performance at idle must not be underestimated, especially where CAS or PDT systems are involved. Under performing alternators can cause life threatening situations when safety systems fail to perform as designed (at any engine speed). Single or Dual output? Dual output alternators stem from a situation where an alternator output needs increasing. This normally necessitates thicker windings in the stator and increased rectifier capacity. (Space may not permit a larger rectifier to be used, so two smaller rectifiers can be used instead.) The rectifiers will have four outputs (2 negative and two positive). It is not good engineering to common all the outputs, so only say the positive outputs are combined, leaving two negative outputs, resulting in a dual output. It is normally not possible to regulate the outputs individually, so any large load on one will also result in voltage dropping in the other. Dual output alternator installations are more expensive due to additional wiring and the challenge of splitting supply to components. (CAS, PDT etc.) The P600 Alternator internals were designed to provide adequate power for the most demanding situations using a single output. Where typical FP alternators require high Rpm to produce power, the P600 supplies power over the whole engine speed band, without loss of Voltage. (It is not necessary to rely on high Rpm to fulfill this function, nor to increase the Peak power.) Why use two Alternators on a machine? Due to the fact that some typical alternators do not have the capability to drive a load at low Rpm, some end users have opted to use two alternators. This allows for the load to be split, thus reducing the load on each, resulting in better low speed functionality. (Higher Voltage at idle due to lower load). This option can however be very costly to the end user. P600 Alternators low speed performance eliminates this situation entirely due to sound design and manufacture. Alternator indicating lights? Flame proof machine installations have all the electrical equipment directly connected to the alternator. There are ample audio and or visual indications on a machine to tell you that the alternator is working when the engine is running. It should not be necessary to remove engine covers to see if the alternator is working Remote monitoring/adjustments? Automotive or mining alternators do not require adjusting, or monitoring, once installed. FP alternators should not be an exception, and the additional cost is probably not warranted. P600 Alternators are back ground devices; they are factory adjusted for optimal performance and problem free operation. (“Fit-it and forget-it”) Hydraulic driven alternator performance? Most of the Hydraulic motors used to drive FP alternators have a maximum speed of around 2500 rpm. At engine idle, the hydraulic motor will not be at full Rpm. (As the engine spools up, hydraulic flow increases and the motor will speed up accordingly.) Oil flow to the motor can be increased for better idle performance but it will result in over speeding the motor as the engine reaches operating Rpm. (Reducing motor life.) The P600  alternator delivers 100% of its rated power at these speeds making it the obvious choice on Hydraulic drives Is Load-dump relevant? Automotive alternator load- dump occurs when a large load is suddenly disconnected (switched off). The loads are generally Air conditioning, ABS, sound systems, Lights etc. where switching the load off results in a spike in the output. FP alternators have permanently coupled loads and under normal operating conditions large load dump will not occur. (Regulator failure will result in load-dump but it seldom happens and is not normally taken into account)

PDTECH (Pty) Limited is a level 2 BBEE company registered in 2016 We   have   +10   years   of   experience   in   Proximity   Detection   Technology   (PDT)   and   Collision   Avoidance   Systems   (CAS)   and   have   been   manufacturing components for a major supplier to the industry since 2016. We   have   been   working   closely   with   both   flame   proof,   and   non-   flame   proof   equipment   manufacturers,   and   developed   a   sound   understanding   of   the power requirements of the safety and other equipment fitted. Our   expertise   in   CAS   and   PDT   uniquely   positioned   us   to   develop   an   alternative   Flame   Proof   Alternator   to   remedy   the   poor   low   Rpm   performance   of some typical FP alternators in use today. ABOUT B-BBEE The         B-BBEE         (Broad-Based         Black         Economic         Empowerment)         Amendment         Act,         2013,         was         proclaimed         on         the         24th         of         October         2014         and         provided         for      significant         amendments         to         the         principle         Act,         the         Broad-Based         Black        Economic         Empowerment         Act,         No.         53         of         2003         (the         “BEE         Act”).         The         Act         makes         it         a      punishable         offense         for         an         entity         to         knowingly         misrepresent         their         BEE         status.                  The         supervening         status         of         the         B-BBEE         Act         became        effective         from         the      27th         of         January         2015,         providing         for         the         harmonization         of         the         EE         Act,         No.         55         of         1988         and         the         PPPFA         Act,         No.         1         of         1999.         The         Amended         Codes         for      Generic         Entities   was   gazetted         on         10         October        2013         and         came         into         effect         in         May         2015         for         verifications         on         financial         periods         ending         after         31      April         2015.         The         Amended         QSE         Scorecard         was         gazette         on         6         May         2015.                  The         Amended         Codes         for         some         of         the         Sector        Charters   have   been   finalized.  The   BEE   Commission   has   been   set   up   to   facilitate   the   implementation   of   B-BBEE.   IRBA   has   withdrawn   as   a   BEE   regulator. All verifications are regulated under the SANAS as of 1 November 2016.

P600 - 12

12Volt alternator performance graph

Notes: Output below engine idle Rpm is only shown for interest as it is not usable. Output above engine idle is also ignored as it requires higher Rpm to achieve (See FAQ’s). Only voltage at 12V and higher is considered for the graph

P600 - 24

24Volt alternator performance graph

Notes:  Output below idle Rpm is only shown for interest Output above idle is also ignored because it requires higher Rpm (See FAQ’s) Only voltage >24V is used for the graph

P600 Flame-Proof Alternators

The   P600   Alternator    was   specifically   developed   to   meet   the   challenges   of   inadequate   supply   power   on   flame   proof machines;   we   use   cutting   edge   design   to   meet,   and   exceed,   the   DC   power   demands   of   modern   and   traditional   Flame proof machines.   Design philosophy  Build an alternator that will provide full load and desired voltage at engine idle Where   traditionally   FP   alternators   only   had   to   supply   power   for   lighting,   new   legislation   and   safety   awareness have    introduced    an    array    of    electronic    equipment    to    machines.    (This    resulted    in    an    increase    in    the    power demands on FP alternators.) Electronic   equipment   performance   relies   on   adequate   and   stable   power   supply   irrespective   of   engine   Rpm.   These increases   in   power   demands   have   resulted   in   poor   performance   at   idle   speeds   (Low   voltage   due   to   load)   on   some alternators. Because   safety   equipment   (Lights,   CAS   and   PDT   systems)   are   mandatory,   it   increases   risk   to   end   users   where   FP alternators fail to produce adequate power at idle Rpm. P600 Alternators  are ready to install with minimum effort. • Retrofits onto existing brackets without modification. • No clamps to shift or brackets to move. • Easy belt alignment • Light weight - Kg 24 • Compact overall dimensions: Length = 270mm - Diameter =206mm P600 alternators   are available in 12V and 24V and both versions are available in Hydraulic drive. Totally enclosed design (TEFC) is safe to use (No exposed fans) FAQ’s • Maximum (Peak) power versus Continuous (Usable) power? • Voltage or Power graphs? • What is Start-up? • Single or Dual output? • Why use two Alternators on a machine? • Alternator indicating lights? • Remote adjustment/monitoring? • Hydraulic driven alternator performance? • Is Load-dump relevant? Peak power versus usable power? Alternators produce power as a function of rpm and load. (Power increases linearly as the rpm increases and vice versa) Peak (Max) output power is only a number and not useful to the end user as explained below: Flame proof (FP) alternators fitted to mining machines have permanent loads coupled to them. This   means   that   the   connected   load,   will   demand   sufficient   output   voltage   and   current,   at   engine   idle   or   full   operating Rpm from the alternator. (The load will only be powered at a specific voltage once the engine spools up to a certain Rpm) Load powering capacity at engine idle is crucial for safety equipment fitted to machines. (CAS, PDT, Cameras, lights, etc.) FP   alternators   that   produce   low   voltage   at   engine   idle   due   to   insufficient   power   capacity   renders   Electronic   equipment useless, increasing the risk to the end user (who relies on correct functioning at any engine speed). The   P600     Alternator    was   developed   to   produce   its   rated   power   at   engine   idle   and   will   supply   sufficient   power   for   all   FP mining applications. The continuous rating of the P600   ensures that the voltage will be stable at idle or full rpm. Safety   systems   (CAS,   PDT,   Beacons,   and   Cameras)   are   not   supposed   to   be   switched   off   at   any   time,   thus   the   load   from these components will always be present. (Also see Load dump)

The curve below shows available output versus rated power at various speeds

Only output voltage of 12V and over is considered. Any output below engine idle is ignored and only shown for interest Peak power above the rated power is ignored (Only available at higher Rpm, not usable for CAS or PDT etc.)

Voltage or Power graphs: Alternator Voltage curves, without a connected load component, are useless to the end user. It gives no indication of what load the alternator will power at the various speeds, and if the voltage will remain stable (and usable) at that speed. P600 continuous (usable) power is not a number; it is determined by alternator design physics. This is where the alternator will provide enough voltage to power the connected load at idle Rpm. (No more guessing if the alternator will be adequate for the load at engine idle.) The P600 Alternator curve shown below indicates the load that the Alternator will supply at >12VDC and engine idle rpm.

What is Start-up? All Alternators start producing a voltage when exited by a battery or self-exited like an FP alternator.  (Low Voltage is generated at first and it gradually builds up as the speed increases to the set value.) As soon as a load is applied, the start-up point shifts to a higher Rpm. Maintaining a load and correct Voltage at start-up, is dependent on sound design philosophy and this is where the unique P600 excels. The P600  Alternator was specifically developed to allow low speed generation of power. Not only will the Voltage remain stable even at idle Rpm, the alternator will power sufficient loads for all mining applications.  P600 Alternators will power CAS and PDT systems, at the correct power levels, without the risk of the safety systems becoming unstable at idle. Lights will be at peak performance and  Elctronic equipment will function as designed.  The importance of adequate performance at idle must not be underestimated, especially where CAS or PDT systems are involved. Under performing alternators can cause life threatening situations when safety systems fail to perform as designed (at any engine speed). Single or Dual output? Dual output alternators stem from a situation where an alternator output needs increasing. This normally necessitates thicker windings in the stator and increased rectifier capacity. (Space may not permit a larger rectifier to be used, so two smaller rectifiers can be used instead.) The rectifiers will have four outputs (2 negative and two positive). It is not good engineering to common all the outputs, so only say the positive outputs are combined, leaving two negative outputs, resulting in a dual output. It is normally not possible to regulate the outputs individually, so any large load on one will also result in voltage dropping in the other. Dual output alternator installations are more expensive due to additional wiring and the challenge of splitting supply to components. (CAS, PDT etc.) The P600 Alternator internals were designed to provide adequate power for the most demanding situations using a single output. Where typical FP alternators require high Rpm to produce power, the P600 supplies power over the whole engine speed band, without loss of Voltage. (It is not necessary to rely on high Rpm to fulfil this function, nor to increase the Peak power.) Why use two Alternators on a machine? Due to the fact that some typical alternators do not have the capability to drive a load at low Rpm, some end users have opted to use two alternators. This allows for the load to be split, thus reducing the load on each, resulting in better low speed functionality. (Higher Voltage at idle due to lower load). This option can however be very costly to the end user. P600 Alternators low speed performance eliminates this situation entirely due to sound design and manufacture. Alternator indicating lights? Flame proof machine installations have all the electrical equipment directly connected to the alternator. There are ample audio and or visual indications on a machine to tell you that the alternator is working when the engine is running. It should not be necessary to remove engine covers to see if the alternator is working Remote monitoring/adjustments? Automotive or mining alternators do not require adjusting, or monitoring, once installed. FP alternators should not be an exception, and the additional cost is probably not warranted. P600 Alternators are back ground devices; they are factory adjusted for optimal performance and problem free operation. (“Fit-it and forget-it”) Hydraulic driven alternator performance? Most of the Hydraulic motors used to drive FP alternators have a maximum speed of around 2500 rpm. At engine idle, the hydraulic motor will not be at full Rpm. (As the engine spools up, hydraulic flow increases and the motor will speed up accordingly.) Oil flow to the motor can be increased for better idle performance but it will result in over speeding the motor as the engine reaches operating Rpm. (Reducing motor life.) The P600  alternator delivers 100% of its rated power at these speeds making it the obvious choice on Hydraulic drives Is Load-dump relevant? Automotive alternator load- dump occurs when a large load is suddenly disconnected (switched off). The loads are generally Air conditioning, ABS, sound systems, Lights etc. where switching the load off results in a spike in the output. FP alternators have permanently coupled loads and under normal operating conditions large load dump will not occur. (Regulator failure will result in load-dump but it seldom happens and is not normally taken into account)