Normal working conditions
◆ Ambient temperature: -5~+40℃, and average temperature in 24 hours below +35℃(except for special orders).
◆ Elevation of installation site: 2000m
◆ Relative humidity: not exceeding 50% at the maximum ambient temperature of +40℃.
◆ With lower temperature, higher humidity would be permitted, but the lowest average temperature in a month not exceeding 90% in
that month, andgiving consideration tothe dews on the goods surface, which would appear due to temperature change.
◆ Pollution protection: 3 grade
◆ The breaker should be put in the place where there isn't any explosive medium and conductive dust and no gas, which would
corrode metal or destroy theinsulation.
Structure and properties
HQ3 is a critical component of any emergency or standby power system. When thenormal (preferred) source of power is lost,
a transfer switch quickly and safely shifts the load circuit from the normal source of power to the emergency (alternate) source of power.
This permits critical loads to continue running with minimal or no outage. After the normal source of power has been restored, t
he re-transfer process returns the load circuit to the normal power source.
1) The setting is formed with two sets power-operated operation mechanism circuit breakers and mechanical interlocking, fuse, wiring
2) Two-set circuit breakers have electric interlocking and mechanical interlocking double protections to prevent the two-set circuit
breaker close on at the same time.
3) The setting suits for 220V working voltage (circuit breaker rated working voltage), control the power pass the case, frame board
control pushbutton (user self-prepared and connect to) direct control two sets power operated operation mechanism to carry
out the power reliable switch over.
4) Suitable for general manual work control occasion, simple structure, low cost.
Rated: voltage 220V 50/60HZ
Noted: power will be interrupted when Switching.
Max current: 63A.
1. Dual power Automatic transfer switch can switch to Normal power or reserve power automatically.
Please noted that the switch can’t turn on or turn off the generator.
This switch Normal power first. If normal power on, the switch will switch to Normal power.
If normal power off, and reserve power on, the switch will switch to reserve power.
Press the button to Automatic, the switch will switch to Normal power or reserve power automatically.
Press the button to Manual, Then you have to switch the Direction manually.
HQ3 is terminal type automatic transfer device. It’s suitable for 3 phases 4 wires
(or 1 phase 1 wire) dual power grid with AC 50/60Hz, rated voltage 400V/230V and
rated current up to 63A. When one power goes wrong (only test normal Phase A voltage
and reserve Phase A voltage, only test loss voltage or loss phase),it will automatic connect one
or several load circuits from one power to the other power automatically, to ensure normal power supply of load circuits.
The automatic transfer switch conforms to IEC60947-6-1 and GB/T14048.11
2.Normal conditions for operation and installation:
Environmental Temperature Condition:-5~+40°C
Installation site is not more than 2000 meters above sea level.
Pollution Level: Grade 3
Installation Category: 3
Vertical installation or horizontal installation
4. Main parameter
Rated Current Ie A
Electrical Appliances Class
5~10In (Type C), 10~15In (Type D),
Rated voltage Ue
220V (2P),380V (3P or 4P)
Rated short circuit connecting ability Icm (Peak)
Rated short circuit breaking ability Icn (effective value)
ATS can be installed in power control cabinet directly. Users can wire after ATS installation
(refer to design and use). As per current value use suitable conductor to connect the mains side
(top terminal) and load side (bottom terminal) of MCB of normal electric power and standby electric power.
In-phase parallel connection at load side, and ensure the phase sequence of normal electric power and
standby electric power must be accordant (Wire as per A,B,C,N sequence). For 3 poles ATS should add one
conductor with section not less than 0.3mm2 to connect theneuter line of power supply correctly, thus ATS
can work properly. For 4 poles or 2 poles ATS, N pole of normal electric power and standby electric power
should be connected to N pole of MCB respectively. In addition, when install ATS please ground reliably at grounding mark.
1) Normal use, please set the switch of controller at Automatic Function. Under Auto working the controller of
ATS monitor normal electric power and standby electric power and display running status of ATS.
When Normal power cut, novoltage, failure, ATS will transfer load automatically from normal power to standby power.
If normal power get right, ATS will transfer load automatically from standby power to normal power.
The luminous diode on switch panel indicate switch off situation.
2) If you don’t adopt automatic transfer or need other manual operation please set the controller at manual.
Under manual operation the controller stop work, and manual operation can make the breaker on off,
and the switch doesn’t transfer automatically.
3) When ATS is short circuit or over load, The MCB of ATS will protect tripping. If power display normally the
handle of MCB is switching on. If the MCB has protected tripping users should set at manual and operate the
switch to dual separating brake by hand, and check the reason of trip. After trouble clearing please set the controller at auto again to operate.
4) When ATS transfer to auto from manual, if normal and standby power are normal
ATS will prior connect normal power to load (even if load connected standby power ago)
9. Matters need attention
When users test or operate please follow relative rules and pay attention to the following matters to ensure use our ATS correctly.
1)Neutral conductor N can’t be connected in wrong way, must connect reliably, otherwise ATS can’t operate properly, even burn controller and motor.
2)The protective grounding of ATS must be connected reliably to ensure safety.
3)Detection sampling signal for controller work power and main power supply is taken from Power supply side
of main circuit, and work power of auxiliary connection terminal used for connect indicator is taken from main circuit,
so can’t have voltage test between spare terminals (unless dismantle the secondary wires).
Can have power frequency voltage test between main circuit and shell or between secondary auxiliary terminals and shell.
10. Simple troubleshooting
When users find fault can request professional to test and deal with. Keep Away for Safety when operate. Or contact our Specialized Service Departments.
1) Double Power are both switched on, but ATS can’t transfer automatically
1 Check Auto/manual should be in automatic position.
2 Check if incoming line is correct or not, if phase sequence is accordance or not, and wiring is solid and reliable or not.
3 Check if the fuse is burned on not.
2) Double power are both switched on, ATS standby power is switching on.
4 Check if normal power incoming line has voltage or not.
5 Check Commonly used insurance
6 Check if external light is connected in wrong way or not.