Dell Force10 E1200i Installing and Maintaining the E1200i System - Page 34

www.dell.com | support.dell.com Figure 8-3. E1200 PEM Front Panel Studs PEM interlock lever Latch Release Status -48/-60Vdc 150A, 7200VA CC-E1200-PWR-DC Over-current protector FN00102lp Locking screws Cable and Connector Requirements You must provide your own cables to connect to a remote power source (for example, a circuit breaker panel) in your equipment rack or office. Cables must be sized to meet the following criteria: • rated for at least 150A service to allow for a fully loaded E1200 system at low input voltage per your local electrical codes • limits voltage drop across the cable length to 0.5V or less Before you make the cable connections, apply a coat of antioxidant paste to un-plated metal contact surfaces. File un-plated connectors, braided straps, and bus bars to a shiny finish. It is not necessary to file and coat tinned connectors or other plated connection surfaces, such as on the E1200 PEM studs. Installing DC PEMs WARNING: An external disconnect shall be provided and shall be easily accessible. Dell Force10 recommends that you use a 150A circuit breaker. WARNING: Un interrupteur externe doit être fournis et doit êtrefacilement accessible. Dell Force10 recommande l'utilisationd'un disjoncteur de 150Ampères. WARNING: Eine leicht zugängliche Trennvorrichtung muss in der Verdrahtung eingebaut sein. Dell Force10 empfiehlt, dass Sieeinen 150A Sicherungsautomaten benutzen. Each E1200 system requires at least one load-sharing DC PEM to operate. Two units are recommended for full facility redundancy. Parameter Maximum DC PEM Input Current Maximum Power Dissipation Input Voltage Specifications 150A 6850W (21,598 BTU/hour) -48 to -60 Vdc 34 | Installing DC Power Supplies