GE 239 Instruction Manual page 76

4 PROGRAMMING
a) TEST CONFIGURATION
• DISABLE START PROTECTION: To verify correct operation of overload curves it may be neces-
sary to disable the start protection. When this feature is turned on and current is injected above
the full load setting, the overload curves will be used to build up the thermal capacity instead of
the /2&.(' 52725 &855(17 and 6$)( 67$// 7,0( setpoints. When this feature is enabled the 239
assumes the motor is in RUN condition any time current is present even on initial startup inrush
current.
EXAMPLE:
6 6<67(0 6(783?02725 '$7$?02725 )8// /2$' &855(17  $
6 6<67(0 6(783?02725 '$7$?6$)( 67$// 7,0( &2/'  6
6 6<67(0 6(783?02725 '$7$?/2&.(' 52725 &855(17  ; )/&
6 3527(&7,21?3+$6( &855(17?29(5/2$'?29(5/2$' &859( 12 
6 7(67,1*?7(67 &21),*85$7,21?',6$%/( 67$57 3527(&7,21 <(6
Inject phase current that 5.0 × FLC. The OVERLOAD TRIP will occur in 14.57 seconds
4
instead of 28.8 seconds. This is because the overload curves is being used to buildup the
thermal capacity instead if the 6$)( 67$// 7,0( and /2&.(' 52725 &855(17 settings.
As a safeguard, start protection will automatically be re-enabled if:
•power to the 239 is turned off and on
•time programmed in the 6 7(67,1*?7(67 &21),*85$7,21?',6$%/( 3527(&7,21 )25 setpoint
has elapsed since the start protection was first disabled
When start protection is disabled the following flash message will be displayed for 3 seconds.
When start protection is re-enabled the following flash message will be displayed for 3 seconds.
• DISABLE PROTECTION FOR: Select the desired length of time that start protection will be dis-
abled. When the programmed time has elapsed, start protection will be re-enabled. If 81/,0,7('
is selected, start protection will be disabled until the feature is turned off via the ',6$%/( 67$57
3527(&7,21 setpoint or via the serial port or until control power is removed from the 239.
DISABLE STATISTICS LOGGING: Setting this setpoint to NO disables the logging of the 02725
•
0$; 67$57,1* &855(17 and 02725 5811,1* 7,0( actual values. See Section 5.2c) MOTOR STA-
TISTICS on page 5–5 for further details.
b) TEST OUTPUT RELAYS & LEDS
• OPERATION TEST: To verify correct operation of output relay wiring, each output relay and sta-
tus indicator can be manually forced on or off via the keypad or serial port. Testing is only allowed
if there is no phase and ground current present and current simulation is turned off.
4-38
Courtesy of NationalSwitchgear.com
START PROTECTION
HAS BEEN DISABLED
START PROTECTION
HAS BEEN ENABLED
239 Motor Protection Relay
4 PROGRAMMING
GE Multilin