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NetSure™ ITM with eSure™ Technology
Installation Manual, Section 6040 (Issue AB, April 8, 2013)
Spec. No: 582145500
25
Section 6040
Model: NetSure™ ITM Issue AB, April 8, 2013
4.4.4 AC Input Power Connections
AC Input Overcurrent Protective Device
External overcurrent protection for the AC input circuit is to be provided by the customer. Refer to
AC Input Specifications on page 61 for maximum input current ratings. Each DC UPS module is
provided with one or two internal 150A AC input circuit breaker.
AC Input Connections
AC input leads can enter the DC UPS module from the top or from the bottom. Refer to Figure 14 for
an AC input routing diagram. Figure 15 provides a diagram for installing conduit fittings when AC
is fed from the top.
One or two AC input breakers are provided (depending on module configuration). Refer to Figure 16
for an AC input connections diagram. Tighten the connections to the torque indicated in Figure 16.
Note that a cover needs to be removed to access the circuit breakers as shown in Figure 9.
• Connect Feed A AC input supply cables between the power distribution panel and the DC UPS
module’s internal Feed A input circuit breaker (Feed A: L1, L2, L3 terminals).
• If the DC UPS module is configured for two AC input feeds, connect the optional Feed B AC input
supply cables between the power distribution panel and the DC UPS module’s internal Feed B
input circuit breaker (Feed B: L1, L2, L3 terminals).
!
WARNING
AC input power connections must be performed by a qualified electrician.
Before connecting AC input cables to the DC UPS module, ensure that you are aware of the
location and operation of the overcurrent protection devices that connect these cables to the
power distribution panel. Before connecting AC input cables, de-energize and lockout or
tagout these overcurrent protection devices.
Do not apply AC input power to the DC UPS module before the arrival of the commissioning
engineer.
!
CAUTION
To reduce the risk of fire, connect AC input only to a circuit provided with correct amperes
maximum branch circuit overcurrent protection in accordance with the NEC, ANSI/NFPA 70.