Over Voltage/under Voltage, Phase Failure, Phase Sequence Protection Relay HHD11 Series

Name: Over Voltage/under Voltage, Phase Failure, Phase Sequence Protection Relay HHD11 Series
Brand: C-Lin

MOQ : 100

HHD11-A

HHD11-C D

Working power supply: three-phase AC380V 50Hz
Protection function: phase sequence protection
Display mode: LED indicates working status
Contact form: a set of normally open and normally closed contacts
Contact capacity: 3A AC250V (resistive)
Dimensions: 24.5×85.5×90.5mm
Installation method: device type or 35mm guide rail type
Note: HHD11-A phase sequence protector is suitable for elevator power phase sequence protection (replacement of market elevator phase sequence protector)

Working power supply: three-phase AC380V 50Hz
Protection function: overvoltage, undervoltage, phase failure, phase sequence, voltage imbalance
Display mode: LED indicates working status
Contact form: a set of normally open and normally closed contacts
Contact capacity: 3A AC250V (resistive)
Installation method: device type or 35mm rail type

HHD11-A

Model	HHD11-A
Supply voltage	Three-phase AC380V 50Hz
Protection function	Phase sequence protection
Display mode	LED indicates work status
Contact form	1 set of NO and NC contacts
Contact capacity	3A AC250V(resistive)
Dimension	24.5×85.5×90.5mm
Installation method	Screw mounting type or 35mm DIN rail type

HHD11-C D

Model	HHD11-C	HHD11-D
Supply voltage	Three-phase AC380V 50Hz
Protection function	Overvoltage, undervoltage, phase failure, phasesequence, voltage imbalance	Overvoltage (adjustable), undervoltage (adjustable), phase failure, phase sequence, voltage imbalance
Display mode	LED indicates work status
Contact form	1 set of NO and NC contacts
Contact capacity	3A AC250V(resistive)
Dimension	24.5×85.5×90.5mm
Installation method	Screw mounting type or 35mm DIN rail type

FAQs

Q1:How does voltage fluctuation affect industrial equipment?

A1: Voltage fluctuation can cause equipment malfunction, overheating, reduced efficiency, and premature failure, especially in motors and three-phase industrial systems.

Q2:How to choose between voltage and phase protection relays?

A2: Choose a voltage protection relay when over-voltage or under-voltage is the main risk. Choose a phase protection relay like HHD11 when phase sequence errors or phase failure are critical concerns.

Q3:How does HHD11 improve power system reliability?

A3: HHD11 improves reliability by monitoring phase sequence and phase failure, providing timely protection through normally open and normally closed contacts, and ensuring stable operation of three-phase equipment.

Q4:How to request technical support from C-LIN?

A4: For technical support, it is recommended to contact C-LIN through official sales channels or product documentation, where technical assistance and application guidance can be provided.