Surge Protective Devices
INSTALLATION INSTRUCTIONS (continued from page 6)
4.Connect black wires (line or phase) marked L1/A, L2/B or L3/C, the white wire (neutral) marked N, and the green wire (ground) marked G, of the SPD using the wire range listed below. To yield the best performance of the SPD within the electrical distribution system, keep all conductors as short as possible and avoid sharp bends.
5.Connection to the unit’s summary alarm contacts shall be with #18 – 22 AWG. The ratings of the Form ‘C’ contacts are
5amps at 250 VAC maximum with a power factor of 1.0. For additional information, see “Monitoring” section.
6.Apply power. The surge protector is fully operational when the GREEN LEDs on the modules and the front door of enclosure are illuminated. If the GREEN LEDs are extinguished or a RED LED is illuminated, check to ensure that power is applied to the SPD. If an abnormal indication is present, remove power to the SPD and contact Liebert/Emerson Network Power Surge Protection at
7.Periodically monitor the status of the LEDs. Reduced protection exists if the GREEN LEDs are extinguished or the RED LED is illuminated. Please contact Liebert/Emerson Network Power Surge Protection at
8.The protection modules in these SPDs may be replaceable, contact Liebert/Emerson Network Power Surge Protection for replacement.
If the SPD model is a Wye configured unit (4W+G), and a Neutral connection is not available, please contact factory.
SUGGESTED BREAKER AND WIRE SIZE
|
| Allowable Range |
| Factory Suggested Size | |||
Model # | Circuit Breaker Size | Connection Wire Size | Circuit Breaker | Connection | |||
| With Disconnect | Without Disconnect | With Disconnect | Without Disconnect | Size | Wire Size | |
SH025 | 15A – 150A |
| #8 – 1/O AWG |
| 60 Amp | #6 AWG | |
SH032 | 15A – 175 A | 15A – 175A | #8 – 1/O AWG | #14 – 2/O AWG | 80 Amp | #4 AWG | |
SH040 | 15A – 175A | #8 – 1/O AWG | 80 Amp | #4 AWG | |||
|
| ||||||
SH075 | 15A – 175A |
| #8 – 1/O AWG |
| 100 Amp | #2 AWG | |
Installation, Operation and Maintenance Manual | 7 | Liebert SPDs |