250KVA Three Phase Dry Type Zig Zag Grounding Transformer Pad Mount Cast Coil 34.5KV
Zig Zag transformers play a crucial role as grounding transformers in power systems, providing a reliable path for zero-sequence currents during unbalanced conditions or fault scenarios.
Main Data
| Transformer Type | Zig Zag Grounding Transformer |
| Transformer Configuration | Dry Type Grounding Transformer, Ventilated |
| Phase | Three Phase |
| Capacity | 250 KVA |
| Vector Group | Zn |
| Primary Voltage | 34500V |
| Frequency | 60 Hz |
| Temperature Rise | 115°C |
| Insulation Rating | Class F Insulation - 180°C |
| Cooling Class | AA; Self-Cooled |
| Z0 | 3.0% |
| Impedance | 142 Ω/Ph, 47.5 ohms at N |
| Efficiency Standard(s) | Meets DOE 2016 Standards, Meets CSA Standards Meets ANSI/IEEE Standards |
| Winding Material | Copper |
| Ambient Temperature Rating | 40°C |
| Dimensions* | 60''-W x 52''-D x 65''-H |
| Dry Weight (w/o Oil)* | 1,550 Lbs |
| Total Weight (Liquid Filled)* | 3,630 Lbs |
Features
- Penta-head Bolt Entry Assembly
- Non-PCB Insulating Fluid
- Tamper Proof Housing
- Hinged Front Compartment Doors, Pad Lockable
- NEMA 3R Wiring Compartment
- Hot Stick Included, HV Door Mount
Product drawings
Factory Tests
- Winding Resistance Test
- Insulation Resistance Test
- Voltage Ratio Error Test
- Short-circuit Impedance Test
- No-load Loss (Wattage) Test
- Load Loss (Wattage) Test
- Induced Voltage Withstand Test
- Separate Source Voltage Withstand Test
- Pressure Integrity Test
Production Photo
Production process
FAQ
1. Q: Can I have a sample order?
A: Yes, we welcome sample order to test and check quality.
2. Q: What is the lead time?
A: Mass production time 15-25 days.
3. Q: How long is the warranty?
A: 24 monthes from B/L. If there are any accessory problems,just provide the photos of damaged accessory,then we will provide free service. According to the number of products,we will provide easily damaged accessories for free. we also can provide technical support if you need.
4. Q: Is OEM/ODM available?
A: Yes,it is! We are manufacturer with our own R&D team, we can customize products according to customer's drawing or requirements.
Customized services:
a. Customized color and special function.
b. Customized box.
c. Print customer's logo.
d. Your other ideas about product, we can help you design and put them into production. The above customized services must be confirmed before production.
5. Q: How to control the products quality?
A: Our company owns the core technology ,all kinds of products hold CE certificate. We have professional engineers. Workers are strictly required to make products according to the drawings. Each process has technical instructors.The QC supervisors will regularly inspect the production. We will do products performance tests during production, and comprehensive quality tests when the products is completed.
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250KVA Three Phase Dry Type Zig Zag Grounding Transformer Pad Mount Cast Coil 34.5KV Images
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