Delixi JD-5S Series User manual
Internal
JD-5S Series Electric Motor Integrated Protector
User Manual
□Please carefully read this User Manual before the installation
and operation of this product, and keep it properly for future
reference
- 1 -
Internal
I. Overview
1.1 Scope of Application
JD-5S series electric motor integrated protector is used in the AC 50/60Hz power supply circuit with a voltage
380V and below to form an electric motor control circuit together with the switching circuits such as AC
contactor. if found abnormal working states such as open phase, overload, and stall of main circuit of electric
motor, please disconnect the contact of the switching device and cut off the three-phase power supply of electric
motor timely to protect the electric motor reliably. JD-5S is an upgraded product of JD-5 product, and the setting
current of the protector is set directly according to the rated current marked on the nameplate of the electric motor
before use for convenient operation by users; there are technologies of multiple starting timeout options and the
overload protection has inverse time limit performance, the needs of various types of motors starting from light
load to heavy load can be adapted. The product has functions that there is a digital tube do display the setting
current value, the run and fault status light-emitting tube is used to display, and there is pointer ammeter drive
output.
Standard: GB/T 14048.4
1.2 Model definition
Rated control supply voltage Us:
AC220V;
AC380V
Rated current: 1A~9.9A
10A～99A
Specification code
Electric motor integrated protectors
1.3 Normal working conditions and installation conditions
1.3.1 Working environment: the altitude does not exceed 2000 meters; The ambient temperature is not higher than
+40℃and not below than -5℃; the voltage change range of the rated control power supply is 85%-110% of the
rated voltage; the product is installed in places where the medium has no serious vibration and explosion hazard,
and there are no gases and dust in the medium sufficient to cause corrosion to the metals and damage to the
insulation, and there is rain and snow invasion.
1.3.2 Vertical or horizontal installation
- 2 -
Internal
II. Structural Characteristics and Working Principle
JD-5S electric motor integrated protector has protections for overload, stall, thermal memory, open phase,
three-phase imbalance, and start-up timeout. This protector adopts current sensing technology, and has a relay
output interface; the whole series is of the core-through type. This protector has advantages of simple structure,
reliable action, and convenient operation.
III. Technical Parameters
Rated operating current Ie range
1A~9.9A 10A~99A
Rated insulation voltage, Ui
AC380V
Rated operating voltage, Ue
AC380V
Rated control supply voltage, Us
AC50/60Hz AC220V AC380V
Use category
Main circuit AC-3; matched auxiliary contact (body) AC-15
Shell protection grade
IP40
Number of types of contacts of aux.
circuit
1 normally open
Operating voltage and operating current
under the use category of aux. Circuit
AC-15 Ue: AC220V Ie: 0.47A
Rated ultimate short circuit current mated
SCPD
RT16-00, 6A
Trip level
10A, 10, 20, 30
Overload protection characteristics
When the actual operating current of the motor is 1.05 times of the
rated operating current, the protector operation protection time is
greater than or equal to 2 h; when the actual operating current rises to
1.2 times, the protector operation protection time is less than 2 h;
when the actual operating current rises to 1.5 times, the protector
operation protection time is less than 2 min.
Range of matched DC meter head
(Rated current)
0~5A (1A~4A); 0~10A (4A~10A);
0~50A (10A~40A);
0~100A (40~99A)
Phase open time
The open time of any phase among three phases is ≤ 3s
Contact capacity
AC380V, 3A; AC220V, 5A (Resistive)
Electrical life:
≥10 x 104times
Mechanical life
≥100 x 104times
Installation method
Device type (with TH35 mounting rail or screw fixed installation)
- 3 -
Internal
IV. Outline and Installation Dimensions of Product
Electric motor integrated protector
Connected to meter head Connected to meter head
Notes: QA: Start Notes: QA: Start
TA: Stop TA: Stop
KM: AC contactor 220V KM: AC contactor 380V
- 4 -
Internal
V. Installation and Operation Instructions
Installation and Operation Instructions:
1. Please carefully read the instructions, and connect the wires according to the wiring diagram.
2. 1# and 2# terminals are the working power input terminals of the protector; 3# and 4# are the normally open
contacts at the control end; 5# and 6# can be connected to the pointer ammeter head. The wiring connection
method can refer to the wiring diagram; three wires from the outlet end of the AC contactor are pass through three
white wire holes H1, H2, and H3 of the protector to connect to the inlet wires of the electric motor (see wiring
diagram).
3. Operation Guide
3.1 Parameter settings
1) Motor rated current setting
Before starting the electric motor, power on the JD-5S protector, press the "SET" key to switch to the "Rated
current" setting item, and at this time the indicator is lit and the display value on the digital tube is the setting rated
current. (According to the nominal rated current value marked on the motor nameplate, the rated current is set by
pressing the " " and " " add and subtract keys)
2) Starting timeout protection time setting
Before starting the electric motor, power on the JD-5S protector, press the "SET" key to switch to the "Start time"
setting item, and at this time the indicator is lit and the display value on the digital tube is the setting starting
timeout protection time (second); set the starting timeout protection time by pressing the " " and " " add and
subtract keys; when "OF" is displayed on the digital tube, this indicates that the starting timeout protection is
disabled, and when the digit is displayed, this indicates that the starting timeout protection is enabled.
The factory default of the product is "OF" to turn off starting timeout protection.
3) Trip level setting
Before starting the electric motor, power on the JD-5S protector, and press and hold the "SET" key to switch to
the "Trip level" setting item, and at this time the indicator is lit, and the digital tube displays the protection trip
level to be set; if "10." is displayed, this indicates Level 10A, with "10" displayed to indicate Level 10, with "20"
displayed to indicate Level 20, and with "30" displayed to indicate Level 30. By pressing the " " and " " keys,
set the different trip levels. The factory default is "10." indicating Level 10A.
- 5 -
Internal
4) Failsafe status view and status recovery:
When the failsafe protection trips in the event of starting timeout, overload, open phase or unbalance in the line,
the fault status indicator on the JD-5S protector panel will be lit, and at this time the protector contact opens and is
locked at the OFF state; by pressing the "SET" key, the three-phase current when the trip protection works can be
viewed on the external pointer ammeter. If the digital tube displays "A-", this is the trip current of phase a; if "B-"
is displayed, this is the trip current of phase B; if "C-" is displayed, this is the trip current of phase C. When the
line works normally, press the "RST" key to unlock the current lock state (in case of open phase, unbalance, or
starting timeout, press the "RST" key for unlocking). As the overload protection has the thermal memory function,
pressing the "RST" key cannot realize the unlocking action, and the unlocking will be carried out automatically
when the electric motor is cooled down (also, the protector can be powered on again for unlocking).
VI. Operation Precautions
1. Connect the wire properly according to the wiring diagram.
2. Set the setting current according to the rated current marked on the nameplate of electric motor by combining
with the display on the digital tube via keys.
3. During the startup of electric motor, the overload indicator will be lit. After startup, the overload indicator shall
be off during normal operation, so that the adjustment process is completed.
4. Please check the performance of the protector regularly, such as open phase test and overload test.
5. It is strictly prohibited to increase the current of the protector when the current and electric motor or the load
works abnormally, otherwise this may cause the electric motor burns.
6. The equipment that may cause major economic losses or personal safety shall be designed to ensure that the
technical characteristics and performance values have sufficient margins, and safety measures such as double
circuit protection should be taken.
VII. Common Faults and Solutions
1. If the motor stops during normal operation, carefully check the electric motor for open phase or overload. First
check whether the electric motor has very high temperature rise; if found temperature rise, the overload may
occur; if not found temperature rise, the line may have open phase to cause trip; check whether the three-phase
power supply works normally; check the moving and fixed contacts of the AC contactor have good contact; check
whether three power lines of electric motor are loose; If all are normal but the electric motor still fails to start,
please carefully check whether the connecting screws of the self-lock contact of AC contactor and the
normally-closed contact of protector are loose; the electric motor can start only after all faults are eliminated. Do
not start the product forcedly when the fault is not eliminated to prevent accidents.
- 6 -
Internal
2. The protector works with the electric motor and the load switch (such as contactor), and the power supply shall
be turned on simultaneously. If failed to realize the synchronized power-on, the protector may have open phase
fault, and the electric motor cannot start normally.
3. If found any product failure, please disconnect the power supply, and then find the cause of fault; after checking
that the line works normally, operate the product according to the installation and operation instructions.
4. For products with poor quality, please contact the local dealer company or our company.
VIII. Transport and Storage
The product is not affected by rain and snow during storage and transportation, and cannot be extruded; the
product shall be put in a well-ventilated environment during storage, and the relative humidity does not exceed
90% at (25℃±5℃). The lower temperature limit is -25℃, and the upper temperature limit is +55℃.
IX. Unpacking and Inspection
Unpack the outer carton, and check there is a user manual in the packing box.
X. Ordering Notice
The current specification is 1A~9.9A, 10~99A. Please note that the power of electric motor shall be consist with
that of the protector.
When ordering, please specify the model and specification of the product. For special requirements, please contact
the manufacturer.
VI. Company’s Commitment
Under the premise that users follow the use and storage conditions and the product are well sealed, within 24
months from the production date, our company will provide repair and replacement service free of charge for any
damage or abnormal operation due to poor manufacture quality. A paid repair will be provided if the warranty
period expires. For any damage due to one of the following situations, a paid repair will be given even if within
the warranty period:
Internal
(1) Improper operation, maintenance, or storage;
(2) Modified and inappropriate repair without permission;
(3) Damage due to falling off or during installation after purchase;
(4) Force majeure such as earthquakes, fires, lightning strikes, abnormal voltages, and secondary disasters.
(5) The electrical life of the product exceeds 100,000 times; the mechanical life of the product exceeds one
million times.
If you have any questions, please contact the dealer or our company’s customer service department.
Customer Service Hotline: 400-826-8008
Certificate
DELIXI GROUP CO., LTD.
Name: Integrated Protector for Electric Motors
Model: JD-5S series
This product complies with the standard GB/T 14048.4,
passes the inspection and is allowed to be shipped.
Inspector: Check 01
Inspection date: See label on inner box
Manufacturer: Delixi Group Co., Ltd.
Address: No. 155, Zhandong Road, Liushi Town, Yueqing City, Zhejiang Province P.C.: 325604
Tel: (86-577) 6177 8888
Fax: (86-577) 6177 8000
Customer Service Hotline: 400-826-8008
www.delixi-electric.com
The second edition of this User Manual was issued in Aug. 2021
