When setting the relay characteristic/torque angle for the three phase directional overcurrent element, a positive angle setting was specified. This was due to the fact that we consider as polarising voltage, the phase voltage value in quadrature of the current under fault conditions. With directional earth fault protection, the residual current under fault conditions lies at an angle lagging the polarising residual earth fault voltage.
Inspect the package for damage. If damaged, notify the appropriate carrier immediately.
If undamaged, open the package and inspect the device for obvious damage. Return
damaged products.
Requirements
• Job wiring diagrams
• Tools (not provided):
– Voltage meter/indicator
– Appropriate drill and drill bit for mounting screws
– Appropriate screwdrivers and wrenches
• Mounting screws, two (2) #10 maximum (not provided)
• Capillary mounting clips (5 provided)
• Training: Installer must be a qualified, experienced technician
T
W A R N I N G
• The TC-5231 series, TC-5232, and TC-5241 series devices are designed for use only as
operating controls. Where an operating control failure would result in personal injury
and/or loss of property, it is the responsibility of the installer to add devices (safety, limit
controls) that protect against, or systems (alarm, supervisory systems) that warn, of control failure.
• Disconnect the power supply (line power) before and during installation to prevent possible electrical shock and equipment damage.
• Make all connections in accordance with the wiring diagram and in accordance with the
National and Local Electrical Code. Use copper conductors only.
• Do not restore electrical power until installation is complete.
T
C A U T I O N
• Do not exceed the electrical ratings indicated on the label inside the cover of the device.
• Avoid locations where excessive moisture, corrosive fumes, or vibration are present.
Use only in locations suitable for NEMA Type 1 rated devices.
Mounting
T
C A U T I O N
• Do not kink the capillary or the thermostat will be damaged.
• To achieve optimum performance, do not mount the thermal element in a vertical pattern.
1. Select a location that permits proper capillary routing. It is important not to twist or strain
the control body or shifting of the calibration may result.
N O T E
• Use only the mounting holes provided in the control frame. Make sure the mounting surface
is flat. Mounting the device to an uneven surface may cause improper control operation.
• Do not let any part of the capillary touch any surface that is colder than the desired
sensing area.
• Do not crush or deform the sensing element when clamping.
• Do not cut the capillary or bulb. Avoid sharp bends, kinks, strains, or pinch marks in the
capillary. Never allow the capillary to rest against sharp edges or rub against metal
surfaces.
