Power Switching Requirements Power for the individual instruments will be supp;ied via magnetically latching relays.
 

• Intruments requiring less than 0.75 Amperes @ +28 Vdc nominal will be inplemented with Teledyne 122c Relays.
• 122c Relay are rated at switching 1 Amp loads @ +28 Vdc
• 122c Relay switching time: 4.0 milliseconds
• 122c Relay contact bounce time: 1.5 milliseconds
• 122c Relay release time: 7.5 milliseconds
• 122c Relays have the following environmental Specifications
• Vibration:         30 g's, 10 to 3000 Hz
• Shock:             100g's for 6 milliseconds half-sine pulse
• Acceleration:    75 g's
• Temperature:    -65°C to +125°

Power for the individual instruments or devices requiring more than 0.75 A @ +28Vdc and less than 1.75 A @ +28Vdc will be implemented with direct drive relays.

• Instruments requiring more than 0.75 amperes @ +28 Vdc nominal will be implemented with Teledyne CD1CF Solid State Relays with output status feedback.
• CD01CF Solid State Relays are rated at switching 2 Amp loads @ +28 Vdc
• CD01CF Solid State Relay switched voltage drop: 0.75 Vdc
• CD01CF Solid State Relay On Resistance: 0.22 Ohms Max
• CD01CF Solid State Relay On Time: 1.5 milliseconds
• CD01CF Solid State Relay Off Time: 0.25 milliseconds
• Relays have the following Environmental Specifications:
• Vibration: 100 g's, 10 to 3000 Hz
• Shock: 1500 g's for 0.5 msec half-sine pulse
• Constant Acceleration: 5000 g's
• Temperature: -55°C to +105°C

Power for the individual instruments or devices requiring more than 1.75 A @ +28Vdc and less than 4.75 A @ +28Vdc will be implemented with direct drive relays.

• Instruments requiring more than 1.75 Amperes @ +28 Vdc nominal will be implemented with Teledyne KD02CK Solid State Relays with output status feedback
• KD02CK Solid State Relays are rated at switching 5 Amp loads @ +28 Vdc
• KD02CK Solid State Relay switched voltage drop: 0.70 Vdc
• KD02CK Solid State Relay On Resistance: 0.075 Ohms Max.
• KD02CK Solid State Relay On time: 5 milliseconds
• KD02CK Solid State Relay Off time: 2 milliseconds
• Relays have the following Environmental Specifications:
• Vibration: 100 g's, 10 to 3000 Hz
• Shock: 1500 g's for 0.5 msec half-sine pulse
• Constant Acceleration: 5000 g's
• Temperature: -55°C to +105°C