Bypass Mode; Operator Or Damage Of The Equipment If Not Followed - LEGRAND KEOR T EVO 10-60 KVA Installation & Operation Manual

4.3.

Bypass Mode

Description of the Symbols Used in the Manual
UPS transfers the loads automatically to the mains voltage in order to protect them during abnormal
conditions.
While UPS operates in Online Operation, UPS switches to bypass automatically (in case the mains voltage
and frequency is within the limits of bypass) in the following conditions;
Description of the Symbols Used in the Manual
• During start-up
This symbol points out the instructions which are especially important.
• Bypass Priority
• Inverter Fault
• Prolonged Overload, output short circuit
This symbol points out the instructions which are especially important.
This symbol points out the risk of electric shock if the following instruction is
• High Heatsink Temperature
not followed.
After these conditions are eliminated, the UPS automatically returns to inverter.
This symbol points out the risk of electric shock if the following instruction is
This symbol points out the instructions, which may result with injury of the
not followed.

operator or damage of the equipment if not followed.

Prolonged overloads in Bypass Operation may cause the thermal/magnetic pro-
tection act. In this case, all loads will be de energized.
This symbol points out the instructions, which may result with injury of the
All packing material must be recycled in compliance with the laws in force in the
operator or damage of the equipment if not followed.
country where the system is installed.
Bypass Operation Voltage Range
The mains voltage is required to be in certain range for Bypass Operation. Voltage tolerance is set ±18% of
All packing material must be recycled in compliance with the laws in force in the
the output voltage in the factory. For instance; if the output voltage is Ph-Ph: 400V, the tolerance range
country where the system is installed.
of bypass voltage would be Ph-Ph: 328V – 472V. In case the input voltage decreases below Ph-Ph: 328V or
Description of the Symbols Used in the Manual
increases above Ph-Ph: 472V; if UPS runs in Bypass Mode UPS switches to Online Mode Operation; if UPS
runs in Online Mode Operation it cannot switch to Bypass Mode Operation even if a fault occurs. If the
batteries and the inverter are suitable to supply the loads, UPS switches to Battery Mode Operation.
UPS: Uninterruptible Power Supply
Description of the Symbols Used in the Manual
Bypass Mode Operation voltage tolerance limit can be adjusted in certain ranges depends on the customer's
ESD: Emergency Switching Device
request on site by Legrand UPS Technical Service Personnel.
RS232: Serial Communication Protocol
To return to Bypass Mode Operation; the mains voltage should turn back to +5V above of lower limit, -5V
UPS: Uninterruptible Power Supply
RS485: Serial Communication Protocol
down of upper limit of bypass limits. Default settings are Ph-Ph: 333V – 465V for Ph-Ph: 400V UPS.
ESD: Emergency Switching Device
MODBUS: Modicon Communication Protocol
RS232: Serial Communication Protocol
SNMP: Simple Network Management Protocol
RS485: Serial Communication Protocol
V: Volt
MODBUS: Modicon Communication Protocol
A: Ampere
SNMP: Simple Network Management Protocol
P: Power
V: Volt
A: Ampere
For Mains Supply, Auxiliary Mains Supply, Output, Battery Circuit Breaker and Maintenance Bypass Circuit
Breaker;
P: Power
"ON": Closing the Circuit
"OFF": Opening the Circuit
For Mains Supply, Auxiliary Mains Supply, Output, Battery Circuit Breaker and Maintenance Bypass Circuit
Breaker;
"ON": Closing the Circuit
"OFF": Opening the Circuit
KEOR T EVO
KEOR T EVO
KEOR T EVO
11
11