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12 

NOTE -

 Because batteries charge and discharge 

slowly, diagnosing battery problems in the field can 
be difficult.  As batteries age their capacity drops 
and the ability to store energy is lost.  Despite this, 
faulty batteries can still draw charge current and 
develop voltage.  A worn out battery can sometimes 
appear good.  A proper method for testing a battery 
consists of bringing the battery to the fullest state of 
charge possible, and then discharging the battery 
and measuring the energy delivered.  While time 
consuming, this method can be employed in the 
field.  If the battery can supply the load for the 
desired time; it can be deemed good.  If the battery 
will not accept charge or cannot deliver the required 
energy; it is worn out.  In many circumstances it may 
be more economical to replace a suspect battery 
rather than perform a full charge-discharge test. 

 
If the troubleshooting points above do not locate the 
cause of the problem, please call, email, or write 
Newmar for assistance before returning the EP unit.  
We have years of experience troubleshooting power 
systems and can usually solve problems over the 
phone. 
 
Customer Service at: 
 

Nemwar 
2911 W. Garry Ave 
Santa Ana, CA 92704 
(714)751-0488 
[email protected]

 

 

Figure 8.0.1 – General View

Содержание EP 12-10

Страница 1: ...Enclosure Power Supply Models EP 12 10 EP 24 5 Newmar 2911 W Garry Ave Santa Ana CA 92704 Tel 714 751 0488 Fax 714 957 1621 M EP As of April 2008...

Страница 2: ...________ 9 7 1 LOCATION 7 2 MOUNTING 7 3 WIRING 8 0 OPERATION ________________________________________________________ 11 8 1 INITIAL POWER UP 8 2 NORMAL OPERATION 8 3 TROUBLESHOOTING 9 0 MAINTENANCE...

Страница 3: ...rom the system battery provides continuous load power free of sharp transients Wide Operating Temperature of 20 60 C 4 140 F makes it suitable for indoor or outdoor use Input Fused provides protection...

Страница 4: ...Fig 4 2 1 In LINE DOWN mode the power supply delivers no power All load power is supplied by the battery In the LINE DOWN mode the alarm contacts are closed in the N O position Fig 4 2 1 shows the cu...

Страница 5: ...densing Efficiency 75 78 EMC Emissions Radiated Noise 30mHz 1gHz per FCC Class B Conducted Noise 150kHz 30mHz per FCC Class B ALARM CONTACTS DC Current Rating at 30 VDC max 1 0 1 0 Amps AC Current Rat...

Страница 6: ...5 0 4 Shipping Data PARAMETER EP SERIES UNIT MIN TYP MAX WEIGHTS DIMS Weight 3 lbs Shipping Weight 5 lbs Shipping carton size 11 5 x 9 x 5 Inches Shipping volume 0 3 cubic feet Storage temperature 30...

Страница 7: ...p hours 17 Amp hours Max Bat Cap 400 Amp hours 200 Amp hours The correct battery capacity for your system will depend on two factors your load and the length of time you wish to have back up power The...

Страница 8: ...nt Amps To determine the minimum required Battery Capacity 1 Draw a vertical line through the Average Load Current 2 Draw a horizontal line through the desired HOLD UP Time 3 Mark the intersection 4 F...

Страница 9: ...el vertical and the text horizontal As shown in the figures below at least 1 of clearance should be allowed above and below the unit for airflow Do not block the ventilation holes on the top back and...

Страница 10: ...Pay close attention to the battery wiring 1 With mains power and the INPUT switch OFF make connections to the AC input The N terminal should be used for L2 in high voltage AC systems In DC powered sys...

Страница 11: ...f so record the voltage and allow several minutes or hours and check the voltage again If you suspect the system is not functioning properly see the troubleshooting points in Section 8 3 8 3 Troublesh...

Страница 12: ...method can be employed in the field If the battery can supply the load for the desired time it can be deemed good If the battery will not accept charge or cannot deliver the required energy it is wor...

Страница 13: ...he end of Section 8 3 to determine if your battery has sufficient capacity for your application Hold up discharge and recovery times are shown in Graphs 6 5 1 and 6 5 2 in Section 6 5 Lead and other m...

Страница 14: ...scillation will not occur once an LVD has been triggered This also ensures that the battery is given the full output of the DC UPS to recharge before resuming supply to the load A value of 13 1 Volts...

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