TRANSFORMERS & ELECTRICAL COMPONENTS
APPLICATION / 01
Substation operating power
For relay protection, trip and close circuits and associated control equipment.
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Product illustration. Actual configuration varies by specification.
Open product image ↗Protection & DC Power
GZDW · DC power supply system
DC supply cabinet for substation control, protection and emergency electrical loads.
- DC output options
- 220 / 110 / 48 V
- Functions
- Charging, monitoring and DC distribution
Price on enquiry · Configuration, quantity & destination
Supply scope, manufacturer information, applicable documents and warranty arrangements are confirmed in the quotation and order.
APPLICATION & DUTY
Where GZDW fits
GZDW supplies DC power for substation protection, breaker operation, automation and emergency loads. The system combines charging, batteries, distribution and monitoring so the DC duty can be defined for both normal operation and loss of the AC supply. Battery capacity is selected from the load profile and required autonomy.
APPLICATION / 02
Essential DC loads
For emergency and automation loads that need a defined supply duration following AC supply loss.
PRODUCT ENGINEERING
Construction & operating functions
DETAIL / 01
Charger and battery system
The charging equipment and battery bank operate as a coordinated DC source. Battery chemistry, capacity and charging requirements must be agreed together.
DETAIL / 02
Charging modes
Equalising and float charging modes are described, together with voltage and current limiting functions. The selected charging programme must match the battery specification.
DETAIL / 03
System monitoring
The monitoring arrangement covers charging and bus quantities and can include individual battery-voltage information. The required alarm points and displayed measurements belong in the specification.
DETAIL / 04
DC distribution
Outgoing circuits supply the selected operating and auxiliary loads. Continuous load, short-duration operating demand and protective-device coordination all affect the distribution design.
DEFINE THE SELECTED ASSEMBLY
Configuration & installation interfaces
Match the installation drawing, cable routes, clearances and electrical duty for the selected equipment.
Illustrative working scene- DC duty
- Provide DC voltage, continuous loads, breaker operating demand and required backup duration.
- Battery scope
- State preferred battery chemistry, installation space and maintenance requirements.
- Monitoring
- Identify alarm contacts, communication protocol and required local display language.
Installation & connection checklist
- Provide the AC input supply arrangement.
- Submit the DC load schedule and trip/close duty.
- Coordinate battery and charger cabinet space and ventilation with the installation.
- Agree battery calculations, circuit diagrams and delivery-test documents.
RATING DATA
Technical parameters
6Parameter / configuration entries
Units shownCompare values with their units
Selected variantConfirm the matching configuration
Review the listed configuration and applicable units. On a small screen, scroll the table sideways.
| Parameter | Catalogue value |
|---|---|
| AC input | AC 380 V ±10% |
| DC output | DC 220 / 110 / 48 V |
| Output current options | 10 / 20 / 30 / 40 / 50 / 60 / 100 / 200 A |
| Noise | ≤55 dB |
| Main temperature rise | ≤60°C |
| Duty | Continuous |
Checked against original PDF page 39 of the distribution equipment guide. Select the DC voltage and current together. Regulation accuracy and ripple requirements are to be agreed in the technical schedule.
Drawings & configuration documents
Send your selected rating and installation requirements to request the matching dimensional drawing, connection details and technical schedule.
DOCUMENTS · DELIVERY · SUPPORT
Technical coordination & after-sales enquiries
Confirm the order documents
Agree the selected specifications, applicable drawings, inspection records and identification requirements in the quotation and order.
Coordinate delivery
Include quantity, destination, packing requirements and preferred trade terms. Confirm transport scope and the requested delivery schedule with the quotation.
Request technical support
For an existing unit, provide its model, nameplate or order reference and a description of the issue. Include relevant photos or records already available. Warranty and service scope follow the agreed order terms.
Contact about this model ↗START WITH WHAT YOU HAVE
Prepare a quotation for this equipment.
Choose your enquiry type. Start with the information you have.
Price on enquiry
Quotations are prepared for the selected configuration, quantity and destination. Currency, validity, delivery terms, freight and any applicable duties or taxes are specified in the quotation.
Project procurement
New installations & project tenders
Discuss a project ↗What to prepare
Send the protection scheme or DC load schedule, auxiliary supply and required functions.
Distributor procurement
Model lists & repeat orders
Discuss supply requirements ↗What to prepare
List exact device variants, input ratings, interfaces, language and documentation requirements.
Panel & equipment builders
Equipment integration & matching
Discuss an assembly ↗What to prepare
Provide secondary schematics, I/O allocation, terminal arrangements and panel dimensions.
Repair & replacement
Identify an existing unit or part
Identify a replacement ↗What to prepare
Start with the device nameplate, wiring drawing and settings or battery data relevant to the replacement.
Illustrative enquiry scenarios.
Selection checklist for GZDW
- Equipment being protected or supplied and the required functions
- AC/DC supply, load duty and CT/PT input information as applicable
- I/O list, trip/close circuits and communication protocol
- Panel dimensions, interface language and required technical documents
- Provide the AC input supply arrangement.
- Submit the DC load schedule and trip/close duty.
- Coordinate battery and charger cabinet space and ventilation with the installation.
- Agree battery calculations, circuit diagrams and delivery-test documents.
From enquiry to an agreed supply
- Share the requirementModel, duty, quantity and destination.
- Review the configurationResolve ratings, interfaces and site conditions.
- Agree the technical scheduleScope, drawings, tests, price and delivery terms.
- Confirm delivery documentsAgree packing, identification and the applicable inspection records.
Testing, warranty terms and after-sales scope are to be agreed in the quotation and order documents for the selected configuration.
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For a quotation, include your required model, rating, quantity and operating conditions.