Freedom from nicotine. Built around the ritual.
substation protection relays
Substation Protection Relays，High-precision microprocessor-based devices compliant with IEC 61850. Ensure power system safety, fault clearance & operational reliability.
Filter
Showing all 10 results
-
ASB-4401H Intelligent Transformer Protection Relays
Overview The ASB-4401 Digital Plant Service Transformer Protection, Measurement, and Control Unit belongs to transformer protection relays, suitable for high-voltage and low-voltage plant service transformers, and integrates protection, measurement, control, and communication functions. Protection Functions (with ANSI Codes) Combined undervoltage…
-
ASC-441H capacitor bank protection relay
Overview of Protective Relays In power system and substation automation, capacitor bank protection relay is a widely applied type of relay protection product, and the ASC-441H digital capacitor protection and control unit is perfectly suited for medium- and low-voltage shunt…
-
ASF-442H Advanced Voltage and Frequency Control
Overview of Voltage and Frequency Control System The ASF-442H Frequency and Voltage Stabilization Control Unit is a core device for voltage and frequency control in power system, control of frequency and voltage, and professional frequency and voltage control. Communication Mode:Optional: RS-485,…
-
ASK-43H Transformer gas and temperature protection
Product Overview Transformer gas and temperature protection consists of three non-electrical protection boards, which primarily provide non-electrical output functions. Product Functions (ANSI) Buchholz / Gas Protection Light gas 71G‑L Heavy gas 71G‑H Temperature Protection Oil temperature 26‑O Winding temperature 26‑W…
-
ASL-441H line protection relay
Overview The ASL-441H Digital Line Protection and Monitoring Unit, as one of the professional transmission line protection relays and digital relays for transmission line protection, is a high-performance line protection relay suitable for low-current grounding systems with ungrounded neutral points…
-
ASL-441XLH line differential protection relay
Overview As a numerical line differential protection relay and protective relay for transmission line, the line differential protection relay — line optical fiber differential protection and control unit — can be installed locally in switchgear cabinets or in a centralized…
-
ASL-446H Differential Line Protection
Overview of differential line protection The ASL-446 digital line differential protection device is a relay used for phase fault protection of short transmission lines, and it supports differential line protection for short-circuit faults on lines of various voltage levels. Differential…
-
ASL-7615 line distance protection relay
Overview Distance protection measures the distance (or impedance) between the fault location and the protection installation point. Distance relay protection of transmission lines, also referred to as line protection with distance relays, adopts distance relays as the core protective devices,…
-
Transformer Differential Protection｜87T
Product Overview transformer-differential-protection｜87t and control units are suitable for substations operating at voltage levels of 110 kV and below. Typically, they are installed in a single panel alongside transformer backup protection devices, non-electrical quantity protection devices, and transformer measurement and…
-
Transformer High Backup Protection Relay
Product Overview The Transformer High Backup Protection Relay is designed for backup protection of transformers in substations at voltage levels of 110 kV and below. It works in conjunction with the AST-441H Differential Protection Unit to perform secondary functions for…
Free Shipping
You will love at great low prices
Flexible Payment
Pay with Multiple Credit Cards
14 Day Returns
Within 30 days for an exchange
Premium Support
Outstanding premium support