Specifications
Maximum Input Short-Circuit Withstand
The maximum input short-circuit withstand for the parallel maintenance bypass panel is 10 kA RMS symmetrical.
Trip Settings for Maintenance Bypass Breaker (MBB) and System Isolation Breaker (SIB)
| 3+0 Parallel System | 2+1 Parallel System | |||||||
|---|---|---|---|---|---|---|---|---|
| UPS rating | Ir | Isd | li | N | Ir | Isd | li | N |
| 10 kVA | 200 | 1.5-10 | 1.5-11 | 4P 3D | 200 | 1.5-10 | 1.5-11 | 4P 3D |
| 15 kVA | 200 | 1.5-10 | 1.5-11 | 4P 3D | 200 | 1.5-10 | 1.5-11 | 4P 3D |
| 20 kVA | 300 | 1.5-10 | 1.5-11 | 4P 3D | 200 | 1.5-10 | 1.5-11 | 4P 3D |
| 30 kVA | 400 | 1.5-10 | 1.5-11 | 4P 3D | 300 | 1.5-10 | 1.5-11 | 4P 3D |
| 40 kVA | 600 | 1.5-10 | 1.5-11 | 4P 3D | 350 | 1.5-10 | 1.5-11 | 4P 3D |
Recommended Upstream Protection
| 3+0 Parallel System | 2+1 Parallel System | |||||||
|---|---|---|---|---|---|---|---|---|
| UPS rating | Breaker | Ir | Tr | li | Breaker | Ir | Tr | li |
| 10 kVA | HDF36150CU31X | 100 | 0.5-16 | 1.5-15 | HDF36100CU31X | 70 | 0.5-16 | 1.5-15 |
| 15 kVA | HDF36150CU31X | 150 | 0.5-16 | 1.5-15 | HDF36100CU31X | 100 | 0.5-16 | 1.5-15 |
| 20 kVA | JDF36250CU31X | 225 | 0.5-16 | 1.5-15 | HDF36150CU31X | 150 | 0.5-16 | 1.5-15 |
| 30 kVA | LDF36400CU31X | 350 | 0.5-16 | 1.5-15 | JDF36250CU31X | 225 | 0.5-16 | 1.5-15 |
| 40 kVA | LDF36400CU31X | 400 | 0.5-16 | 1.5-15 | LDF36400CU31X | 300 | 0.5-16 | 1.5-15 |
Recommended Cable Sizes
 DANGER |
|---|
|
hazard of electric shock, explosion, or arc flash
All wiring must comply with all applicable national and/or
electrical codes. The maximum allowable cable size is 4/0.
Failure to follow these instructions will result in death or serious injury.
|
Cable sizes in this manual are based on Table 310.15 (B)(16) of the National Electrical Code (NEC) with the following assertions:
-
90 °C (194 °F) conductors (75 °C (167 °F) termination)
-
An ambient temperature of 30 °C (86 °F)
-
Use of copper conductors
-
Installation method C
If the ambient temperature is greater than 30 °C (86 °F), larger conductors are to be selected in accordance with the correction factors of the NEC.
Equipment grounding conductors/Protective Earth (PE in this manual) are sized in accordance with NEC Article 250.122 and Table 250.122.
| 3+0 Parallel System | 2+1 Parallel System | ||||
|---|---|---|---|---|---|
| UPS rating | Input cables to MBB/ Output cables from MBB/ System output from SIB (AWG/kcmil) |
Cables from UPSs to SIB (AWG/kcmil) | Input cables to MBB/ Output cables from MBB/ System output from SIB (AWG/kcmil) |
Cables from UPSs to SIB (AWG/kcmil) | |
| 10 kVA | Phases | 1 | 8 | 4 | 8 |
| Neutral | 2 x 1/0 | 4 | 1/0 | 4 | |
| PE | 10 | 10 | 10 | 10 | |
| 15 kVA | Phases | 3/0 | 6 | 1 | 6 |
| Neutral | 2 x 3/0 | 3 | 4/0 | 3 | |
| PE | 8 | 8 | 8 | 8 | |
| 20 kVA | Phases | 2 x 3/0 | 4 | 2/0 | 4 |
| Neutral | 4 x 3/0 | 1/0 | 2 x 2/0 | 1/0 | |
| PE | 8 | 8 | 8 | 8 | |
| 30 kVA | Phases | 3 x 3/0 | 1 | 2 x 3/0 | 1 |
| Neutral | 6 x 3/0 | 2 x 1/0 | 4 x 3/0 | 2 x 1/0 | |
| PE | 6 | 6 | 6 | 6 | |
| 40 kVA | Phases | 4 x 3/0 | 2/0 | 3 x 3/0 | 2/0 |
| Neutral | 8 x 3/0 | 2 x 2/0 | 6 x 3/0 | 2 x 2/0 | |
| PE | 6 | 6 | 6 | 6 | |
Recommended Cable Lugs
| Cable Size | Cable Lug Type |
|---|---|
| 10 | LCA10-14-L |
| 8 | LCA8-14-L |
| 6 | LCA6-56-L |
| 4 | LCA4-56-L |
| 3 | LCA3-56-L |
| 1 | LCA1-56-L |
| 1/0 | LCA1/0-56-L |
| 2/0 | LCA2/0-38-L |
| 3/0 | LCA2/0-38-L |
| 4/0 | LCA4/0-38-L |
