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under Main Menu for Parameter Group 3 – "Output Setup" / Sub Menu for Parameter Group 3, Parameter
(f) – "OL. Protect" (Section 10.2.3.5). See Table 11.1 under “Overload Protection” for status of front panel
LEDs and LCD messaging resulting from this condition. NOTE: When “Overload Protection” is activated, the
Inverter will be latched in shut down condition. To reset the Inverter, switch OFF the Inverter by switching the
3-Position Rocker Switch (1, Fig 6.1) to OFF position. Wait for 10 sec and switch on again.
11.5 SHORT CIRCUIT PROTECTION
11.5.1 Short Circuit Protection when “AC GRID” input is NOT available: When AC input IS NOT available, the
AC load will be supplied by the Inverter. The Inverter will shut down if there is a short circuit on its output.
Short circuit condition is sensed due to any one or both of the following conditions:
• Output current is more than 24A continuously for 1.2 sec
• Output voltage drops to 80V or below continuously for more than 1.2 sec
See Table 11.1 under “Overload Protection” for status of front panel LEDs and LCD messaging resulting from
this condition. NOTE: When “Short circuit Protection” is activated, the Inverter will be latched in shut down
condition. To reset the Inverter, switch OFF the Inverter by switching the 3-Position Rocker Switch (1, Fig 6.1)
to OFF position. Wait for 10 sec and switch on again.
11.5.2 Short Circuit Protection when “AC GRID” input IS available:
•
11.5.2.1 Parameter “Inverter Mode” is set at “Off-Line” (See Section 10.2.3.4): When AC GRID input is
available, it will be bypassed to the AC output load side and the Inverter will be in standby condition. If
there is a short circuit on the AC output load side, the 12A input side circuit breaker (19, Fig 6.2) or the
external AC Panel breaker feeding the AC GRID input will trip. The short circuited AC output load side
will then be transferred to the Inverter. The inverter will then shut down as described above at Section
11.5.1 under “Short Circuit Protection when AC GRID input is NOT available”
•
11.5.2.2 Parameter “Inverter Mode” is set at “On-Line” (See Section 10.2.3.4): When AC GRID input
is available, it will in standby condition and the AC output load side will be supplied by the Inverter.
If there is a short circuit on the AC output load side, the inverter will shut down as described above
at Section 11.5.1 under “Short Circuit Protection when “AC GRID” input is NOT available”. The short
circuited AC output load side will be transferred to the AC GRID input. Due to short circuited AC
output load side, the 15A input side circuit breaker (19, Fig 6.2) or the external AC Panel breaker
feeding the AC GRID input will trip.
11.6 OVER TEMPERATURE PROTECTION
Temperature of two hot-spots near two internal heat sinks is sensed by Negative Temperature Coefficient
(NTC) Resistors NTC1 and NTC2. In case the ambient temperature is higher than the rated value or, if there
is inadequate forced air cooling due to fan failure or restricted / blocked ventilation openings (8a in fig 6.1
and 20 in fig 6.2), the temperature inside the unit will continue to rise. The Inverter will shut down due to
over temperature if the temperature sensed by either NTC1 or NTC2 rises to 105°C. The Inverter will reset
automatically when both the hot spot cool down to 85°C.
See Table 11.1 under “Over Temperature Protection” for status of front panel LEDs and LCD messaging
resulting from this condition.
SECTION 11 |
Protections and Alarms
Содержание PSR-1200-24
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