STRP: Seal & Temp-Stat Relay (Panel Mount)
The STRP monitors the seal and embedded temperature sensor on submersible pump motors. If the resistance in the seal area goes lower than the set point or the temp-stat opens, individual relay outputs will be energized, one for a seal failure and one for a temp-stat failure.
To monitor the seal for a leakage, low voltage is applied to the seal sensor. If the resistance sensed falls below the adjustable trip point, the seal fault output relay will be energized. High resistance is considered “good”.
To monitor the temp-stat, low voltage is applied to the normally closed contact. If the contact opens, the temperature fault output relay will be energized. A normally closed input is considered “good.”
An alternate input option is also built into the STRP. With the 1-input option selected, if the resistance is between 330Ω and 1,500Ω, both the seal and temp-stat are considered “good”. If the input resistance falls below 330Ω, a seal fault is indicated and the seal fault output relay will be energized. If the input resistance goes above 1,500Ω, a high temperature fault is indicated and the temperature fault output relay will be energized.
Adjustments are available to:
• Select 1-Input or 2-Input operation
• Select the resistance on the 2-input operation from 5KΩ to 200KΩ
• Select a Manual or Automatic reset after a fault has been corrected.
Supply Voltage: 12VDC & 24VDC, 24VAC, 120VAC & 240VAC
Power Consumption: 2VA
Inputs: 5VDC @ 2mA
Seal: Adjustable 5KΩ to 200KΩ, +5KΩ Hystersis
Temp-Stat: 1NC Contact, Good condition
Resistance trip point fixed at 330Ω & 1,500Ω
Seal Fault: <330Ω
Temp-Stat Fault: >1,500Ω
10A @ 120VAC, 25°C
5A @ 277VAC
1/8HP @ 120/277VAC
5A @ 30VDC
Adjustments: (4) Membrane Buttons
Display: 16 Character, 2-line display, with back light
Mounting: Panel Mounting: Through the door
Termination: Terminals: Pluggable Terminal Blocks
Packaging: Panel Mount
Weight: 1 Pound
Terminal Blocks: -40°C to 60°C
(Display and membrane buttons may not function below -20°C.)
Storage: -40°C to 85°C