Dry Type Transformer Nameplate based on IEC 60076
(1). Manufacturer
This indicates the company that manufactured the transformer.
(2). Type: SWD 2000/13.8
This is the model number of the transformer.
2000 represents the rated capacity in kVA.
13.8 represents the high voltage (HV) rating in kV.
(3). Serial Number (S/N): 054092301
A unique identification number assigned to the transformer.
(4). Rated Power: 2000 kVA
The transformer can handle a maximum load of 2000 kVA.
(5). Winding Material: Al/Al
Both High Voltage (HV) and Low Voltage (LV) windings are made of aluminum.
(6). Rated Voltage (HV Tap Positions)
POS-1: 14490 V
POS-2: 14145 V
POS-3: 13800 V (Nominal)
POS-4: 13455 V
POS-5: 13110 V
These are tap changer positions used to adjust voltage without load (Off-Circuit Tap Changer).
(7). Standard: IEC 60076-11
International standard for dry-type transformers.
(8). Manufacturing Year: 2024
The year in which the transformer was manufactured.
(9). Frequency: 60 Hz
Designed for operation in a 60 Hz power system (commonly used in Middle East regions).
(10). Vector Group: Dyn11
Indicates winding configuration:
Primary (HV): Delta connection
Secondary (LV): Star connection with neutral
Phase shift: +30°
(11). Type of Cooling: AN (Air Natural)
Cooling is achieved naturally using air without any forced cooling system.
(12). Protection of Transformer: IP00
No enclosure protection; internal parts are exposed (open type).
(13). Protection of Enclosure: IP31
The enclosure provides:
Protection against objects larger than 4 mm
Protection against vertical water droplets
(14). Weight: 5300 kg
Total weight including enclosure.
(15). Rated Current
HV Side: 83.67 A (Primary)
LV Side: 2886.8 A (Secondary)
(16) Um: 17.5 kV
Maximum system voltage on the HV side.
(17). Insulation Level
HV: LI 95 kV / AC 38 kV
LV: AC 5 kV
Indicates lightning impulse and power frequency withstand capability.
(18). Short Circuit Impedance (at 75°C): 4.35%
Limits short circuit current and provides internal impedance.
(19). Maximum Short Circuit Duration: 3 Seconds
The transformer can withstand short circuit conditions for up to 3 seconds.
(20). Maximum Ambient Temperature: 50°C
Maximum allowable surrounding temperature during operation.
(21). Temperature Rise: 150°C
Maximum temperature rise of the winding under full load.
(22). Insulation Class: F/F
Class F insulation with a maximum temperature limit of 155°C.
(23). Environmental Class: E2
Suitable for industrial environments with moderate pollution.
(24). Climatic Class: C2
Can operate in low temperature conditions.
(25). Fire Behavior Class: F1
Low smoke emission and reduced fire spread, making it safer for buildings.
(26). Type of Service: Continuous
Designed for 24/7 continuous operation.
(27). Enclosure Color: RAL 7032
Standard color code of the transformer body.
(28). Connection Diagram
HV Side: U1 – V1 – W1
LV Side: u2 – v2 – w2
(29). Off-Circuit Tap Changer
Tap positions (POS 1 to POS 5) are used to increase or decrease voltage, but adjustment must be done when the transformer is de-energized (no load condition).
Summary
This nameplate provides complete technical details of the transformer, including rating, voltage levels, insulation, protection, cooling method, and operating conditions, which are essential for proper installation, operation, and maintenance.