Eaton Power Xpert Solar 1500 User Manua page 78

Appendix B
Appendix B
Flex Bus Kit: Throat Connection
Contents
Each 84-37413-1 kit will contain the following;
1. Top cover (has lifting handles), 1 pc.
2. Bottom cover, 1 pc.
3. 3/8 inch hardware (SS bolts, nuts, flat and lock washers)
for cover assembly, 32 pcs.
4. Flex-bus jumpers, 6 pcs.
5. 1/2 inch hardware (Gr5 bolts, lock-nuts, flat and Belleville
washers) for Bus assembly, 288 pcs.
6. This document
Instructions
Assemble as follows;
1. Prepare each mating bus face with Penetrox "E" or
suitable equivalent for copper connections. DO NOT use
Penetrox "A" or similar compounds made for Al to Al or
Al to Cu connections.
2. Place two Flex-bus bars on each side of one phase
(3 places) of the unit output/ transformer LV input
bus stubs.
3. Bolt assembly direction: 1/2 inch Bolt, 2 Belleville
washers (in parallel), flat washer, bus assembly, flat
washer, 1/2 inch lock nut.
4. Torque 1/2 inch bolt assemblies to 50–60 ft/lbs
(68–81 Nm). DO NOT OVER-TIGHTEN!
5. Place top cover over throat assembly, attach bottom
cover with 3/8-16 x 3/4 inch lg. SS bolts and washers
(4 places, each side) and torque to 6 ft/lbs (8 Nm).
DO NOT OVER-TIGHTEN!
6. Secure cover assembly to unit and transformer throat
apertures with 3/8-16 x 2 inch lg. SS bolts and washers
(4 places, underneath each end) and torque to 6 ft/lbs (8
Nm). Tighten jam nut at each location to secure
assembly. DO NOT OVER-TIGHTEN!
68 Power Xpert Solar 1500/1670 kW Inverter MN141001EN—October 2014 www.eaton.com