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HDPT-820 transformer protector for neutral grounded side |
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The HDPT-820 transformer protection applies to the side of the transformer where the neutral is directly grounded. It may make up package protection for transformers together with the HDPT-800 transformer difference protection and the
HDPT-830 transformer backup protection for other sides 1.Compounded voltage lock (directional) over-current protection 2.Overload protection 3.Zero sequence (directional) over-current protection 4.Gap zero sequence over-current protection 5.Gap zero sequence over-voltage protection 6.Zero sequence external transformer selective trip function 7.External trip local function Ordering instructions Provide the following upon ordering: 1. Name, model and quantity of the device. Please specify any special requirement differs from our standard product. 2. Voltage class. The operating power supply for any device is intended for both AC and DC purposes, with 110V and 220V inputs; the 220V version will be provided unless otherwise specified. 3. Communication port: The device standard communication configure is a single 485. If needs dual RS485 network which shall be specified. 4. Ratings of key parameters For a protector, provide the nominal rated current (1Aor5A) For a device with the zero sequence current protection function in a low-current ground system, provide the rated zero sequence current (0.2Aor0.02A) 5. Term and place of delivery, means of transport 6. Other terms shall be negotiated. |
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