EDPT-410C2(C3) type microprocessor based transformer protection and monitoring device,EDP400 series protection,,HengRui Electric Power

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EDPT-410C2(C3) type microprocessor based transformer protection and monitoring device

Overview
Characteristic
Selection Guide

EDPT-410C2 (C3)type microprocessor-based transformer protection device applies to the transformer protection and monitoring of plant or station or distribution transformers in systems with the neutral point and those grounded via an arc suppression coil or resistor with voltage ratings of 35kV and below.

protection function

Index	Protection Function
1	Instantaneous protection(with compound voltage )
2	Definite-time over-current limit protection (with compound voltage), inverse time over-current protection
3	Overload protection
4	Definite-time limit negative sequence over-current protection, inverse time limit negative sequence over-current protection
5	Zero sequence over-current protection for High-voltage side
6	Definite-time zero sequence over-current protection for Low-voltage side，inverse time zero sequence over-current protection for Low-voltage side
7	Low voltage protection ( under-voltage protection)
8	Three-phase fused alarm, Three-phase fused locked protection
9	Body protection (non-electric protection)
10	PT Break Judgment

measure function

Index	Electrical parameters	Accuracy
1	secondary & primary protection current value (Ia1、Ic1)	1%
2	secondary & primary measure voltage value（Uab、Ubc）	1%
3	frequency（F）	0.02Hz
4	power（P、Q）secondary & primary value；power factor（COS￠）	1%

control function

Index	Item	Remarks
1	breaker control	remote control or through the menu operation
2	Relay for output	The device provides 5 output relays used to control the output and signaling functions.

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.