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4.4 Terminal Block Explanation
L12
L11-L12: UTILITY INPUT
Remarks:
1.
The maximum current for each terminal is 120 Arms for 20 kVA.
2.
This UPS is a SIM (Single Input) type, only AC source can be supplied to the UPS from the L11-L12 terminal for the 1-phase input
model.
3.
Use No. 4 AWG, 75 ° C minimum copper wire and 23 lb-in Torque force when connecting to terminal block
4.
This isolation transformer tower-type UPS Output terminals:
a. For 100/110/115/120 VAC systems you may connect as
shown below.
N22
L22
120Vac
20 KVA (Max)
5.
Please refer to the specifications of input current, output current and recommended conductors listed below.
a. AC input and output (minimum 75 ° C copper wire)
Model
20KVA
L12
L11
● L11-L12: the terminal for Utility Input to provide the power source when the UPS is
working under Utility mode
L11
● G1: the terminal for UPS Input Ground
● L21 、 L23 、 N21 、 L22 、 N22: the terminals for UPS Output
● G2: the terminal for UPS Output Ground
N21
L23
L21
Maximum Current
120 A/111 A (In/Out)
b. Battery input
Model
20KVA
b. For 200/100 VAC, 220/110 VAC, 230/115 VAC, 240/120 VAC,
or 240/208/120 VAC systems you may connect as shown below.
208Vac
N22
L22
120Vac
1 0 KVA (Max)
Conductor Section AWG (mm
AWG #4 (25mm
Maximum Current
62.5 A/83 A
7
20 KVA (M ax)
N 21
L23
L21
120Vac
10 KVA (Max)
240Vac
20 KVA (Max)
)
Torque force
2
)
2
Conductor Section AWG (mm
AWG ＃ 6 (16mm
) / AWG ＃ 4(25mm
2
)
2
)
2
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