Low Voltage Solid-State Starter - York YK Manual

FORM 160.75-EG1 (519)
Accessories and Modifications (Cont'd)
The variable speed drive provides automatic displacement power factor correction to 0.98
or better at all load conditions. Separate displacement power factor correction capacitors
are not required. Additional advantages of the variable speed drive are as follows:
• Lowest chiller life cycle through part load energy savings.
• Application-specific designs enable efficient, precise load control and seamless inte-
gration with equipment control panel and BAS.
• Soft start with input current less than full load current.
• Smooth acceleration reduces stresses on motor and driveline.
• Reduces compressor sound levels at most operating conditions.
• Rugged and reliable with no moving parts.
• IEEE-519 2014 compliant with a harmonic filter.
• Multi-level PWM output closely simulates a true sine wave, allowing the use of stan-
dard motors and bearings.
Standard features include: a lockable door interlocked disconnect switch; UL listed ground
fault protection; over-voltage and under-voltage protection; 3-phase sensing motor over-
current protection; single-phase protection; insensitive to phase rotation; over-tempera-
ture protection; digital readout at the Control Center of:
• Output frequency
• 3-phase output voltage
• 3-phase output current
• Input power (kW)
• Self diagnostic service parameters
• Kilowatt-hours (kWh)
• Input KVA
• Total power-factor
• 3-phase input voltage
• 3-phase input current
• Self diagnostic service parameters
The 24 pulse design limits the electrical power supply distortion from the variable speed
drive to comply with the guidelines of IEEE STD. 519-2014.

LOW VOLTAGE SOLID-STATE STARTER

The Low Voltage Solid-State Starter is compact and mounted on the unit. Power and con-
trol wiring between the starter and the chiller are factory-installed. Available for 200 - 600
volts (see Table 2 on page 31), the starter enclosure is NEMA-1, with a hinged access
door with lock and key. Electrical lugs for incoming copper power wiring are provided.
30 JOHNSON CONTROLS