LEGRAND MEGALINE/1 Guide Rapide page 2

The manual bypass enables the disconnection and reconnection of the UPS to the
protected load without any interruption of the power supply. It is possible therefore to
service the UPS with no downtime and therefore without causing any inconvenience
to the user.
The manual bypass 3 108 77 must be installed ONLY with UPS Megaline/1
The manual bypass 3 108 78 must be installed ONLY with UPS Megaline/2
Box contents:
1 pc Manual bypass
2 pcs self threading pan head screws 2.9 x 9.5 (MEGALINE/1)
2 pcs self threading pan head screws 3.9 x 9.5 (MEGALINE/2)
2 pcs self threading countersunk head screws 2.9 x 9.5 (MEGALINE/1)
6 pcs screws M 3 x 10 (MEGALINE/2)
1 pc cover
1 pc Instruction sheet
1 Multilanguage safety instructions
Installation:
The manual bypass must be installed by qualified technical personnel.
1. Switch off the UPS.
MEGALINE/1
MEGALINE/1
L
IN
N
PE
Test
Connect the input cable to the mains power supply, connect a load to the UPS output
(e.g. a lamp) and the EPO (Normally Closed - NC). With the UPS switched off, check the
following:
- bypass switch in position I (yellow light on) - the load receives power;
- bypass switch in position 0 (yellow light off) - the load receives no power;
- push the EPO button and check that the UPS switches off.
Switch on the UPS and check that the load receives power when the bypass switch is
in both positions. If this does not take place, check the connection of the cables, the
supply voltage rating and that the bypass is fully inserted into the UPS socket.
Use of the bypass in normal operating conditions
When the UPS is operating in normal conditions, the bypass switch must remain in
position 0 and EPO contact closed.
NOTE: Never leave the bypass switch in position I during normal UPS operation: the
load is not protected in case of a mains supply blackout because the UPS output is
not connected.
Technical data
Input Voltage
Output Voltage
Input & Output current
Max UPS power
Protection Fuses
Degree of Protection
All manuals and user guides at all-guides.com
L
OUT
N
PE
Size
2. Disconnect the UPS input cable from the mains supply and the UPS output cable
from the load.
3. Remove the connection terminal block on the rear of the UPS by unscrewing the
two screws. Save the screws. There are two M4 x 60 screws in the Megaline/1. There
are two M4 x 70 in the Megaline/2.
4. Unwire the two cables from the connection terminal block since they will be used to
connect the UPS to the bypass.
5. Connect the input wire and the output wire to the connector taking care to to
respect the indications references of IN/OUT, phase and neutral. Then tighten the
cable guide ring nuts.
6. - Megaline/1 (3 108 77): Connect EPO cables (double insulation) to the 2 poles of
green connector provided with screws. Then tighten the cable gland;
- Megaline/2 (3 108 78): connect EPO cables (double insulation) to the 2 poles
connector. Then tighten the cable gland.
7. - Megaline/1 (3 108 77): fix the cover with two self threading countersunk head
screws 2.9 x 9.5;
- Megaline/2 (3 108 78): fix the cover with six M3 x 10 screws.
8. Install the bypass onto the UPS by fixing it with the two screws taken from the
terminal block previously removed.
9. - Megaline/1 (3 108 77): fix the base of the bypass to the UPS cabinet with two self
threading pan head screws 2.9 x 9.5;
- Megaline/2 (3 108 78): fix the base of the bypass to the UPS cabinet with two self
threading pan head screws 3.9 x 9.5.
MEGALINE/2
N
OUT
PE
L
Use of the bypass for service
To disconnect the UPS:
- commute the bypass switch to position I.
- switch off the UPS.
- Unscrew the fixing screws on the bypass and then remove the bypass from the UPS
socket.
NOTE: the load now receives power directly from the mains power supply. If the
bypass switch is put to position 0, the power supply to the load will be interrupted.
To reconnect the UPS:
- replace the bypass into the UPS socket (refer to point 8 of the installation
procedure).
- switch on the UPS.
- commute the bypass switch to position 0.
3 108 77
Megaline/1 Bypass
184 - 265V
184 - 265V
23 A max
5000VA
1 pc 10x38 aR 32A 600V
IP 20
240x145x59 mm
2
L
IN
PE
N
EPO
3 108 78
Megaline/2 Bypass
184 - 265V
184 - 265V
44 A max
10000VA
2 pcs 10x38 aR 40A 600V
IP 20
240x145x59 mm