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I General
RENHE Automatic Transfer Switch (abb. as ATS) adopts the world-famous automatic transfer switch or AC contactor as the main switch, equipped with Process Control Board (PCB) of perfect control and thunder-proof function. It is manufactured under the strict process. It is used as the automatic transfer system on all RENHE ? automatic generator sets and the automatic generator sets of other brands.
PCB installed behind the easy-access door is applied to the 3 phase or single phase system of 220 VAC. And the PCB is connected to the other equipment by a connector pin which enables the easy taking off during the service, testing or replacing work.
Model of the ATS:
KX 800A ： KX means the serial no （ KX 、 KI 、 KXI ）； 800A means the current capacity.(Rated current of the main switch)
II. Function
1. KX Series
KX has not the control function as starting the generator sets after delay, mains recovery delay, voltage test and so on. It can be equipped with the automatic generator sets and transfer the load by the control panel of the generator. KX series can be matched with RENHE 8200 ， 8800 automatic control system and other generator sets which has the ATS automatic control function. So the KX series is more economical and simple.
Control Model: Gen / Auto / Mains
LED Status indicator:
Mains Available
Mains On load
Generator On load
• KI Series
The KI Series has the perfect control functions as mains recovery delay, mains failure delay, switch transferring blind-spot delay, generator on load delay, generator cooling down delay, thunder-proof functions and so on. The KI Series have the functions of 3 phase test, voltage peak value and BH test. The Series can be used with any automatic generator which enables the remote-start. With only two control cables, the KI can be connected onto the generator easily. So the KI can control the generator to start, shutdown and transfer the load automatically.
Control Model ： Test1 (no load)/ Auto / Test2 (on load)
LED status indicator ：
Mains Available
Mains On load
Generator Available
Generator On load
Parameters set ：
M.VOLT. SET ： set the Main voltage normal value ， 75-100% available ，
“VOLT. 100%”=240VAC
MCT: set the delay time for switching on when Mains is available ， 0-5MIN available.
GST ： set the delay time for generator to shutdown when the Mains is available and on load ， 0-5MIN available.
GCT ： set the delay time to switch on after the Mains on load ， 0-5MIN available.
DBT ： set the delay time for switch transferring BH, 0-60 Available.
MFT ： set the delay time for Mains failure, 0-60S available.
G.VOLT. SET ： set the generator normal voltage value , 75-100% available.
“VOLT. 100%”=240VAC
To set the normal voltage value ：
“VOLT. SET” can set the normal voltage value. The voltage is normal when neither the Mains voltage nor the generator voltage goes below the pre-set value of “VOLT. SET”; and voltage defaults when either one goes below the pre-set value.
Protection Function ：
Mains/Generator Voltage Low Mains/Generator phase-deficient
Pre-set parameters:
M ． VOLT. SET
MCT ： 3MIN
GST ： 5MIN
GCT ： 10SEC
DBT ： 2SEC
MFT ： 2SEC
G ． VOLT. SET ： 190VAC ： 190VAC
The parameters can be adjusted within the available range on the requirement of the users. But the unsuitable parameter will cause the default of the ATS or incapable of operating, so only professional technician can handle the adjustment.
3. KXI Series
In order to meet the requirement from the users, RENHE designed KXI ATS (double standby) to two sets of generator as the stand-by electric supply way. The user can set one of the generators as predominant stand-by one. When the predominant one defaults, the other one will start automatically, and supply the electric source to the load. In this way can the reliability can be ensured.
KXI series ATS is made up of a KI Transfer Switchgear and a KX generator control switchgear. KI Transfer switchgear has the same function as the above KI Series, and the control status and modes are as the following:
Control Mode ： Gen1 / Gen2
LED Status indicator ： Gen1 On load
Gen2 On load
III Rated current, specification and installation of the ATS
KX, KI and KXI series are of 80A-3150A current capacity, with the same dimensions, installation ways and the specification of the main switches.
ATS of 80A and 125A are wall-mounted ones and others are floor standing ones. Wall-mounted ones pre-leave the room under the container for main cable and control cables, while floor standing ones have the removable board to connect the cable. And the vertical sides of the containers can be taken down, installed and tested easily.
In 80A-350A ATS, the ABB contactors are adopted as the main switches. With the reliable electric closedown circuit, original mechanical closedown facilities, the Mains contactors are ensured not to switch on when the Generator contactors are closed. French originated Socomec transfer switches are adopted in the ones above 400A, which are warmly welcomed by the users for their high-quality and beautiful structure and design.
1. Capacity and specification
Rated current |
Dimension （ W×D×H ） |
Contactor/Transfer switch |
Installation |
80A 、 125A |
720×302×370 |
ABB AC Contactor
（ quadrupole ） |
Wall-mounted |
200A 、 250A 、 300A 、 350A |
700×600×1410 |
Floor standing |
400A |
700×600×1410 |
SOCOMEC
Transfer switch
（ quadrupole ） |
630A 、 800A 、 1250A |
800×800×1800 |
1600A 、 2500A 、 2500A 、 3150A |
1000×1000×1800 |
2 ． Introduction of the main switch
2.1 ABB AC Contactor
In 80A-350A models, double ABB quadrupole AC contactors are adopted. The standard specification: original imported contactors, mechanical interlock facilities and electric interlock design.
Mechanical Life ： 80—125A 10×10 6
200—350A 5×10 6
Electric Life ： 1×10 4
2.2 SOCOMEC transfer switch
Equipped with French Socomec Sircover Series motor-driven low voltage on-load transfer switch (400A-3150A), the ATS is especially designed to the 3 phase automatic control device in the electric supply system. They can be operated manually. The driven motor has the AC electric supply, and controlled by the light-current switch.
Main electric and mechanical property
Rated working current （ A ） |
00 |
630 |
800 |
250 |
1600 |
2000 |
2500 |
3150 |
Maximum breaking current （ A ） |
3200 |
6400 |
8000 |
10000 |
Maximum close current （ A ） |
4000 |
8000 |
10000 |
12500 |
Dynamic current （ A ） |
45 |
55 |
00 |
110 |
120 |
Acceptable max. short-circuit current （ KA ）（ no short-circuit protection function ） |
100 |
120 |
120 |
Mechanical life |
5000 |
4000 |
3000 |
2500 |
3. Connecting sketch map
IV Operation Instruction
1. KX Series
1.1 Automatic mode
1.1.1 Set the control switch on the ATS panel to “Auto” position, the generator set is in automatic mode.
1.1.2 When the Mains is available, the Mains available and Mains on load lights turn on.
1.1.3 The generator starts automatically by the local control panel when the Mains is off or in wrong.
1.1.4 Generator Available light turns on after the generator starts and voltage is normal. After the control panel on Generator sends the demand to be on load, the ATS turns to the generator side automatically, and the Generator On Load light turns on.
1.1.5 Mains Available light turns on after the Mains is normal. After the control panel on the Generator sends the demand to transfer the load to the Mains, the ATS turns to the Mains automatically, and the Generator On Load light turns off while the Mains On Load turns on.
1.2 Manual Mode
1.2.1 User can set the control switch on ATS to “Gen” position during operation no matter the Mains works normally or not. The Generator will start automatically. After the generator voltage is normal, the ATS will turn to Generator which then will be on load.
1.2.2 User can set the control switch on ATS to “Mains” position during operation. If the Mains is normal, the ATS will turn to the Mains (the Generator will shutdown automatically if in operation.). The generator will not start automatically in this situation no matter the Mains is normal or not.
1.2.3 User can set the generator as manual if the user wants to start the generator manually when Mains is off or works wrong during operation. After reaching the normal voltage, set the control switch on the ATS on “Gen” position. The ATS will turn to the Generator which is on load then.
2.KI series
2.1 Auto mode
2.1.1 Set the control switch on the ATS as “Auto”.
2.1.2 The “Mains Available” and “Mains On Load” indicator lights will turn on when the Mains in on load.
2.1.3 The “Mains Available” and “Mains On Load” indicator lights turn off when the Mains if off. The KI ATS sends the demand to start the generator after pre-set delay time (Demand will not be sent within the delay time if the Mains is normal). The Generator set is controlled by the control panel to start after delay time. The “Gen Available” indicator light turns on after the voltage is normal. As for Socomec switches, set the GCT pre-set delay time as 0 and keeps DBT pre-set time. After the DBT delay time, the ATS turns from 0 position to Generator set. As for ABB contactors, after the GCT pre-set delay time, the contactor opens first, and then the contactor switches on after the DBT pre-set delay time.
2.1.4 The Mains Available indicator light turns on when the Mains if normal (set by M.VOLT. Set and M.VOLT. Diff sets). After the pre-set MCT, as for Socomec switch, the ATS will turn to “0” position and keeps the pre-set period in DBT, and turns to the Mains position. As for the ABB contactor, the contactor on the Genset side disconnects first after the pre-set MCT time, and then the contactor on the Mains side closes after the DBT time. At this time, the Gen On Load indicator light turns off while the Mains On Load indicator light turns on. If the Mains fails within the MCT time, the ATS will not transfer the load to the Mains.
2.1.5 After the Mains is on load, GST begins to starts. The demand to start the generator will be cancelled and the generator stops. And the Gen Available light turns off.
2.1.6 Should the Mains is off for a short time (0-60 seconds available) when the Mains is on load, the generator will not start in order not to start the generator too often.
2.2 No-load test mode
2.2.1 Turn the control switch on ATS in “TEST1” position
2.2.2 KI ATS will send the starting demand to the control panel on the generator set no matter the Mains is normal or not. The generator will start after the delay time. When KI ATS receives the correct voltage information, Gen Available indicator light turns on, but the ATS will not turn to Generator set, and the Gen On Load indicator light will not turn on.
2.3 On load Test Mode
2.3.1 Set the control switch on the ATS as “TEST2”.
2.3.2 The “Mains Available” and “Mains On Load” indicator lights will turn off no matter the Mains is normal or not and the Generator starts after delay time.
2.3.3 Gen Available indicator light turns on when KI ATS receives the normal voltage information and starts the Generator. After the pre-set GTC time, the ATS will turn to the Generator side and Generator On Load light turns on.
3.KXI （ double-standby ） Series
User can set the predominant one through the control panel on the Generator according to t the requirement. After KI switchgear receives the starting demand, the predominant one should start automatically. After the normal voltage is set up, KX switchgear will turn to the predominant one, Gen1 On load or Gen2 On load indicator light turns on. After the GCT time, the main switch on KI switchgear will turn to Generator side which will be on load, while the Generator On Load indicator light turns on. If the predominant one fails during the period, the secondary one will star automatically and be on load.
V. Troubleshooting
RENHE ATS have been tested strictly before delivery and of the quality. Then due to the mistake or unsuitable activities in installation, operation, the ATS maybe fails. Troubleshooting guide is provided herewith. Please contact the local agent if the defaults remain after acting as the guide suggests.
1.Main Switchgear fails
1) Not reaching the Delay time. Wait until the pre-set delay time is full.
2) Check for the correct connection esp. the Mains power, Generator power and load lines.
3); Check for the correct connection of the control lines. (ATS to control panel)
2.Indicator light not turns on
1) Check for correct connection, esp. Mains power, generator power and load lines.
2) Check for correct set of delay potentiometers on the control panel.
3.Generator fails to start when the Mains if off.
1) Check if the “AUTO” position is set on both the ATS panel and the Generator panel.
2) Check for the correct connection between the ATS to the Control panel on Generator.
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Purchase Remarks:
Welcome to our Production Department. We will
provide the following service items for you at
your placing a purchase order.
●
Send
professional people to the working site for
installation guide, adjustment and commissioning
test.
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Technical
training: Academic and practical training on
spot/ complimentary technical training in
supplier’s place
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Necessary
spare parts
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Guarantee.
The guarantee shall be valid for the period of
twelve months or 1000 hours whichever comes
first. The guarantee shall cover
against manufacture defect, bad material and
workmanship only.
(The above items are subject to Beijing Renhe
Epoch Mechanical & Electrical Equipment Co., Ltd
without prior notification.) |
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