MidNite Solar 150-SL Classic MPPT Solar Charge Controllers
- Brand: Midnite Solar
MidNite Solar’s Classic charge controllers offer many useful features including arc-fault detection (not currently listed to UL 1699B) and Ground Fault Protection (GFP) which eliminates the need for a separate GFP breaker assembly.
Three sizes are available to accommodate solar arrays with operating voltages up to 150, 200, or 250 VDC. A feature called HyperVOC protects the controller from damage when open-circuit voltage exceeds the operating voltage by a margin equal to or less than the battery bank voltage. The table below represents maximum power only. Be sure to consult the power curves in the user’s manual when sizing your PV array as allowable current varies with array voltage.
MidNite Solar’s Classic controllers have MPPT modes for solar, wind, or hydro with user-adjustable power curves, and a learning mode for self-optimization. Classics can be stacked to act as one large controller without a separate hub. The Classic has built-in Ethernet and USB and RS-232 ports for two-way communication. Each unit has 32 MB of internal memory for data storage. Firmware is user upgradeable using downloaded files. Each unit includes a sealing kit for dusty or salt-air environments, but sealing can reduce output by up to 20%. Use MidNite 300 VDC breakers (see Electrical Distribution Parts) for power-source voltages over 150 VDC. Make sure that the breaker will fit into your DC power center, or use a separate MidNite Big Baby Box (see Electrical Distribution Parts) to accommodate the breaker. On the battery side of the controller, breakers need only be rated for the highest battery-charging voltage.
The Classic controllers have two auxiliary relay outputs. AUX1 can be programmed to either be a 12 VDC output (200 mA max) or as a dry-contact relay (1 A max). AUX2 can either be a 12 VDC output, a logic input (for instance it could allow control of the Classis by a signal from a battery BMS) or a PWM signal output for diversion load control or for connection to a MidNite Clipper.