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Figure 52.
Field testing a battery.
MECHANICAL AND ELECTRICAL HARDWARE
All mechanical and electrical hardware components (selector
switches, toggle switches, manual switch, operations counter,
trip sockets, phase sockets, resistor brackets, fuse receptacle,
etc.) can be visually or electrically checked. If replacement is
needed, remove wires, noting their exact placement, remove all
connecting hardware and then remove the existing component.
Install the new component by reversing procedure. See
Appendix V for connection diagrams for ME controls Form 2, 3,
and 3A.
BATTERY MAINTENANCE
Battery Specifications
•
Nickel-cadmium.
•
24-volts (20 cells in series).
•
1.0 Ampere hour capacity (10 hour rate).
•
Charging rate: 50-mA maximum.
•
Weight: 41.5 oz.
•
Length: 10”.
•
Width: 2”.
•
Height: 2”.
Maintaining Battery Charge
The battery is fully charged and ready to use just prior to ship-
ment. For storage at temperatures under 70-degrees, the bat-
tery will maintain adequate charge for operation up to 1-month
without trickle charging. However, extremely high ambient stor-
age temperatures can result in a battery shelf-life of as little as
one month. Thus we recommend that a control battery in stor-
age not be left off charge for a period of more than 1-month.
Two convenient methods exist for applying a trickle charge
to the control battery.
1. Connect the battery to the ME control and energize the
potential charger.
CAUTION:
Shorting battery positive to battery
negative at the battery test terminals will cause
permanent damage to the control. The control will be
inoperative and possible misoperation (unintentional
operation) of the recloser may result.
!
CAUTION:
Shorting the battery positive to
ground will damage a resistor on the control input
board, this will result in the battery negative floating,
with respect to ground.
!
CAUTION:
Do not short battery positive to the
control cabinet (or other ground). If shorted on a
Form 3 control the control will be permanently damaged,
the control will be left inoperative and possible misoper-
ation (unintentional operation) of the recloser may
result. If shorted on a Form 3A control a resistor on the
input board will be destroyed; however, the control will
remain operative.
!
WARNING:
High voltage. The COMMON AC
GND terminal is connected to the control cabinet.
If the incoming 120-Vac supply is inadvertently connect-
ed to the common terminal the control cabinet will be at
120-Vac potential. Contact with high voltage will cause
severe personal injury or death.
!
2. A KA1142ME3 120-Vac battery charger is available for main-
taining one ME control battery.
The KA1142ME3 battery charger provides two charging
rates, 15-mA and 50-mA. The 15-mA charging rate is used to
maintain a battery at full charge. The 50-mA rate is used to
charge a discharged battery. A battery must be charged at
the 50-mA rate for 48 hours.
NOTE: A fully discharged battery can be brought to full charge in
about 7-days with the control’s potential charger, if the battery is
good. The KA1142ME3 battery charger, at the 50-mA charge level,
will recharge battery in about 48 hours.
Field Testing a Battery
NOTE: The battery in the Form 3 and 3A control has a steady drain of
approximately 1.5- to 2.5-milliamperes (may be as high as 4.5-mil-
liamperes with certain accessories).
To check the condition of a battery, a field test can easily be
made. To positively insure proper control operation, this test is
conservative; failure to pass does not necessarily mean the bat-
tery needs replacement. But a more thorough test can then be
performed—normally in a repair or maintenance shop.
To field test:
1. From the battery test terminals on the control front panel
measure the battery voltage (see Figure 52). If battery volt-
age is below 24-volts, the battery is either low on charge or
is faulty. The battery should be removed for recharging and
retested before returning to service.
2. If battery voltage is above 24-volts, a power delivery check
should be made. To load the battery, a 10-ohm resistor (mini-
mum of 10-watt size) is required. To test the battery—while
measuring battery voltage connect a 10-ohm resistor across
the battery test terminals, for approximately 2-3 seconds.
The battery voltage should drop by no more than 3-volts
from the open circuit voltage, for ambient temperatures
above 20 degrees F.
NOTE: Either a KA638ME voltmeter accessory or a KMET test set
can be used for the load test. Both devices have an internal 10-ohm
load resistor.
3. If the temperature is below 20-degrees F. the voltage should
be approximately that shown by the lower curve in Figure
53. If the voltage is lower than this, the battery should be
removed for shop testing.
Содержание Kyle Type ME Series
Страница 34: ...Figure 51 Form 3A test points for battery charging circuitry Table 12 Type ME Electronic Recloser Control 34...
Страница 43: ...Figure 54 continued Form 2 Connections continued 43 S280 75 2...
Страница 44: ...Figure 55 Form 3 connection diagram below S N 5500 Form 3 Connections 44 Type ME Electronic Recloser Control...
Страница 45: ...Figure 55 continued Form 3 Connections continued 45 S280 75 2...
Страница 46: ...Figure 56 Form 3 connection diagram S N 5500 to 25999 46 Type ME Electronic Recloser Control Form 3 Connections...
Страница 47: ...Figure 56 continued 47 S280 75 2 Form 3 Connections continued...
Страница 48: ...Figure 57 Form 3A connection diagram 48 Type ME Electronic Recloser Control Form 3A Connections...
Страница 49: ...Figure 57 continued Form 3A Connections continued S280 75 2 49...