GEYA GATS-G-4P-250A Automatic Transfer Switch User Manual

1. Important Safety Information

▲ Dangerous

Before installing or operating the ATS, read and understand these instructions carefully. Only professional ATS personnel should perform installation, adjustment, repair, and maintenance.

Many parts of the ATS, including printed circuit boards, operate with on-line voltage. Do not touch these parts. Use insulated tools only.
Do not touch unprotected components.
Before maintenance, take the following preventive measures:
- Disconnect all power.
- Place "prohibited closing" signs near the switch.
- Switch to "0" position and then hang a padlock.

▲ Warning

Inconsistent with the line voltage: Before powering and configuring the ATS, ensure the line voltage is within the power supply voltage range specified on the ATS nameplate. If the line voltage and power supply voltage range are different, it will damage the ATS. Using it not according to instructions will damage the equipment.

2. Product Overview

The GEYA GATS-G-4P-250A is a PC grade automatic transfer switch designed for dual power systems, ensuring an uninterruptible power supply by automatically transferring between city power and an AC generator. It features silver contact points and red copper parts for stable relay control and enhanced durability.

Figure 1: GEYA GATS-G-4P-250A Automatic Transfer Switch (4P 250A model)

Figure 2: Uninterruptible Power Supply Diagram showing automatic transfer between City Power (Source A) and Backup Power (Source B) from an inverter or generator. Transfer time is less than 50ms.

Switch Structure Explanation

The ATS consists of a switch body and a control unit. Key components include:

Model and Specification: Identifies the specific ATS model.
Power Switch Button: For manual operation.
Position Indication: Shows the current power source (I, 0, or II).
Switch Body: The main electrical switching mechanism.
I line for main power: Terminals for the primary power source.
II line connected for emergency power: Terminals for the backup power source.
Control Power Input and Output Terminals (101-106): For control power connections.
Switch Controlling Terminals (201-206): For external control signals.
Switch Working Status Indication Terminals (301-306): For external status indicators.
Operate Handle: For manual switching.
Load Side: Terminals for connecting to the electrical load.

ATS Wiring Diagram Main Backup Load — Figure 3: Basic wiring diagram illustrating connections for Main Power, Backup Power, and Load.

Automatic Transfer Switch 100A-3200A — Figure 4: GEYA Automatic Transfer Switch models ranging from 100A to 3200A.

3. Specifications

General Product Specifications

Attribute	Value
Brand Name	GEYA
Model Number	GATS-G-4P-250A
Product Name	Dual Power Automatic Transfer Switch ATS
Type	Circuit breaker, Mini
Rated Voltage	220/380V
Rated Frequency	50/60Hz
Rated Current In	16A-3200A (Specific model is 250A)
EU LVD Voltage	Low voltage: Below 50Vac or 75Vdc
Certification	CE
Is Smart Device	No
Origin	Mainland China

Main Technology Parameters

Note: The table above (Figure 5) provides detailed technical specifications including Rated Insulation Voltage (Ui), Rated Concussion Withstand Voltage (Uimp), Rated Working Voltage (Ue), Using Category, Rated Short-Circuit Connection Capacity, Rated Short-Time Withstand Current (Icw), Transfer Time, Control Voltage, Rated Frequency (Start/Normal), and Weight for 4-pole configurations across different frame classes.

Product Dimensions and Weight

Length: 45 cm
Width: 35 cm
Height: 25 cm
Weight: 10.5 kg

4. Installation and Wiring

4.1 Pre-Installation Check

ATS Delivery: Check and ensure the received product matches your order.
Check the Voltage: Verify that the rated voltage and working voltage of the ATS are within the specified scope.

4.2 Installation Method

Install the ATS according to the provided diagrams and instructions. Ensure all external accessories are properly installed.

ATS Installation Diagram 16A-1600A — Figure 6: Installation diagram for 16A-1600A ATS models (2 input 1 output). Refer to the table below for specific dimensions.

16A~1600A Installation Dimensions (2 input 1 output)

Specification	A	A1	B	B1	C	E	G	H	J	K	L	M	N	P	R	S	S1	T	T1	U	V	X	Y	Y1	Y2
16~100A	270	245	110	103	170	142	115	146	226	84	7	44	81	30	14	18	23	2.5	5	103	12	6	40.5	92	67.5
125-160A	348	305	147	142	224	190	144	185	284	102	7	49	91	36	20	25	37	3.5	/	127.5	19	9	56	127.5	127.5
250A	411	368	170	142	224	190	144	200	352	102	7	49	91	50	25	29	40	3.5	/	141.5	28	11	56	130	130
400A/3P	525	374	249	222	305	268	250	290	354	179	9	96	91	65	32	37	52	5	/	222	38	11	83	193	193
400A/4P	585	435	249	222	305	268	250	290	415	179	9	96	91	65	32	37	52	5	/	222	38	11	83	193	193
630A/3P	525	374	265	222	305	268	250	290	354	179	9	96	91	65	40	45	61	6	/	222	38	12	83.5	193.5	196
630A/4P	585	435	265	222	305	268	250	290	415	179	9	96	91	65	40	45	61	6	/	222	38	12	83.5	193.5	196
800-1000A/3P	785	520	352	250	390	326	360	/	496	220	11	115	84	120	60	64	88	8	/	250	56.5	13	109	254	254
800-1000A/4P	1080	635	352	250	390	326	540	/	610	220	11	115	84	120	60	64	88	8	/	250	60.5	13	109	254	254
1250A/3P	785	520	368	250	390	326	360	/	496	220	11	115	84	120	80	68	100	8	/	250	56.5	13	109	254	254
1250A/4P	1080	635	368	250	390	326	540	/	610	220	11	115	84	120	80	68	100	8	/	250	60.5	13	109	254	254
1600A/3P	785	520	376	250	390	326	360	/	496	220	11	115	84	120	80	68	108	10	/	250	56.5	13	110	255	255
1600A/4P	1080	635	376	250	390	326	540	/	610	220	11	115	84	120	80	68	108	10	/	250	60.5	13	110	255	255

Dimensions are in millimeters unless otherwise specified.

ATS Installation Diagram 2000A-3200A — Figure 7: Installation diagram for 2000A-3200A ATS models (2 input 1 output). Refer to the table below for specific dimensions.

2000A~3200A Installation Dimensions (2 input 1 output)

Specification	A	A1	B	G	J	R	S	T	V	Y1	Y2
2000A/3P	785	537	423	360	496	80	81	10	56	113	121
2000A/4P	1080	651	423	540	610	80	81	10	60	113	121
2500A/3P	785	537	433	360	496	80	81	15	56	118	116
2500A/4P	1080	651	433	540	610	80	81	15	60	118	116
3200A/3P	785	537	443	360	496	80	81	20	56	123	111
3200A/4P	1080	651	443	540	610	80	81	20	60	123	111

4.3 Wiring the ATS

Connect the bus bar of the switch, ensuring it coincides with the rated current. Connect the control wire and outside indication wiring according to the manual instructions.

ATS Wiring Diagram — Figure 8: Primary wiring diagram for Main Power, Backup Power, and Load connections.

Method of Terminal Connection

Terminal Connection Method — Figure 9: Illustration of how to connect wires to the terminals. Use a screwdriver to apply downward force as indicated, then embed the wire.

Wiring Details

The primary wiring diagram is shown in Figure 8.
The control power is derived from normal power, emergency power C and N phases.
I and II line control power AC220V should be connected with terminals 102~103 and 104~105 respectively. Terminals 102 and 104 are for normal power and emergency power live lines, respectively.
Terminals 101 and 106 act as signal lamps to control the power supply. Note: 101 and 106 should not be connected with any other lines.
When using the above (under) input line, the under (above) terminals I and II line A, B, C phases will be connected with copper lines or lines acting as output.

Correct Installation Examples

Refer to the diagrams below for correct and incorrect installation methods:

Correct Installation Diagram 1 — Figure 10: Example of correct installation (Picture 19, 20, 21 are correct, 22 is incorrect).

5. Operation

5.1 G Type Economic ATS Manual Instruction (16A-100A)

Note: Pay attention to Main power and Emergency power phase sequence corresponding relation when wiring the switch.

Wiring Methods

The ATS supports various wiring methods for automatic and manual control:

Automatic Wiring Method: Connect terminals 201-206 for automatic operation.
Manual (Remote Control) Wiring Method: Use SB1 (Main Power closing indication) and SB2 (Emergency Power closing indication) buttons with terminals 202-205 for manual control.
Automatic and Manual (Remote Control) Wiring Method: Combines both automatic and manual control using a selective switch (SA) and fire protection terminals (202, 204).

5.2 G Type Fire Type ATS Manual Instruction (16A-3200A)

Note: Pay attention to Main power and Emergency power phase sequence corresponding relations when wiring the switch.

ATS Wiring Diagram 16A-3200A — Figure 11: Wiring diagram for 16A-3200A fission type ATS, showing connections for Main Power, Emergency Power, and control signals. FU1 and FU2 fuses are 2A.

Note: For detailed controller manual instructions, please refer to the Y-701/702 user manual.

6. Debugging the Switch

Connect the normal power (I) and emergency power (II) to the corresponding copper bar.
Automatic Debugging:
- Normal power supply with electric, emergency power supply with electric: Switch I line switches on.
- Normal power supply without electric, emergency power supply with electric: Switch II switches on.
- Normal power supply with electric: Switch I line switches on.
- (Refer to the switch panel white indicating arrowhead for position).
Remote Debugging:
- Press the push button SB1: Switch I line switches on.
- Press push button SB2: Switch II line switches on.
Automatic/Remote (Manual) Debugging:
- When the function selection switch is in the automatic position: The switch should act as required for item 1.
- When the function selection switch is in the remote (manual) position: The switch should act as required for item 2.
When the switch is in the position of switch on I line or II line, the signal lamp on the panel should indicate correspondingly.
After debugging, close the power supply first, and transfer the switch to the "0" position by handle (middle position, refer to the switch panel white indicating arrowhead).

7. Maintenance

Regular maintenance is crucial for the longevity and safe operation of your ATS. Always follow the safety precautions outlined in Section 1 before performing any maintenance.

Periodically inspect all wiring connections for tightness and signs of wear or corrosion.
Ensure the switch mechanism operates smoothly without obstruction.
Keep the ATS clean and free from dust and debris.
If any issues are detected, refer to the troubleshooting section or contact qualified personnel.

8. Troubleshooting

This section provides general guidance for common issues. For complex problems, consult a qualified electrician.

Switch not transferring: Check power supply to both main and emergency sources. Verify control wiring and settings. Ensure the switch is not in manual override or locked position.
Indicator lights not working: Check control power supply and wiring to indicator terminals (301-306).
Overheating: Ensure proper ventilation around the ATS. Check for loose connections or overloaded circuits.

9. User Tips

Professional Installation: Due to the complexity and high voltage involved, it is highly recommended to have this ATS installed by a certified electrician to ensure safety and proper functionality.
Regular Testing: Periodically test the automatic transfer function by simulating a power outage to ensure the backup power system engages correctly.
Clear Labeling: Clearly label all power sources and load connections for easy identification during maintenance or troubleshooting.

10. Additional Resources & Support

For further detailed information, including specific controller manuals (e.g., Y-701/702), please refer to the official PDF user manual:

View User Manual (PDF)

For technical support or warranty inquiries, please contact GEYA Official Store directly.

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