Discontinued - Littelfuse/SymCom

SymCom 520CP-230 Voltage Monitor Product Description

SymCom’s Model 520CP-230 is a fully programmable, microcontroller-based, current sensing device designed to monitor 3-phase pumps or systems with ramp up times of 4 seconds or less. Applications include submersible pumps, booster pumps, reverse osmosis systems, centrifugal pumps, vertical turbine pumps, oil well pumps, chemical pumps or other similar systems.

Three external current transformers must be utilized in conjunction with the Model 520CP. The following 7 set points can be set and viewed from the 3-digit alphanumeric LED: overcurrent trip point, undercurrent trip point, current unbalance trip point, trip delay, rapid cycle timer (RD1), overload restart delay (RD2), underload restart delay (RD3), number of restarts after an overload, and number of restarts after an underload fault. Last fault diagnostics is also viewable. When a harmful condition is detected, the 520CP’s output relay is deactivated after the specified trip delay. The output relay reactivates after the appropriate RD2 or RD3 timer has expired. If the pump is started on a single-phase or a reverse-phase condition, the Model 520CP deactivates its output relay in 0.5 seconds.

SymCom 520CP-230 Voltage Monitor Typical Applications

• Fans
• Compressors
• HVAC
• Heat Pumps
• Well Pumps
• Sump Pumps
• Small Conveyor Motors
• Oil Rigs

SymCom 520CP-230 Voltage Monitor Features

• Protects Three-Phase Motors From:
  • Overcurrent
  • Unercurrent
  • Current Unbalance
  • Rapid Cycling
  • Single Phasing
  • Phase Reversal
• 3-Digit LED Diagnostic Display
• Last Fault Diagnostics
• Automatic or Manual Reset
• Remote Reset Capability
• UL Listed
• CSA Approved
• 5-Year Warranty
• Made in USA

SymCom 520CP-230 Voltage Monitor Specifications

Three-Phase Line Voltage . . . . . . . . . . . . 200-250 VAC

Frequency . . . . . . . . . . . . . . . . . . . . . 50*/60Hz

Maximum Full Scale Current . . . . . . . . . . . . 5 Amps (max.)

Fixed Operating Point; Reverse & Single-Phase

• Trip Delay . . . . . . . . . . . . . . . . . . . . . . . 0.5 second
• Trip Point Accuracy . . . . . . . . . . . . . . . . ±2%
• Timing Accuracy . . . . . . . . . . . . . . . . ±25%, ±1 second

Output Contact Rating

Temperature Range . . . . . . . . . . . . . . . . . . . . . 0° to 70°C (32° to 158°F)

Power Consumption . . . . . . . . . . . . . 5 Watts (Max.)

Transient Protection (Internal) . . . . . . . . . . . . . 2500V for 10 ms

Safety Marks

Weight . . . . . . . . . . . . . . . . . . . . . . . . 35.2 oz.

Mounting Method . . . . . . . . . . . Four #10 or #12 screws (3/4”-1” in length)

Options (additional cost) . . . . . . . . . . . DPDT Relay Contacts

*Note: 50Hz will increase all delay timers by 20%

Requires external current transformers (sold separately).

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

SymCom 520CP-230 Voltage Monitor Resources

SymCom 520CP-230 Product Specifications

SymCom 520CP-230 Installation Bulletin