TB-231024-V-101 Switchgear and Protection Relay Trainer

I. Product Overview

1.1 Overview

With the Switchgear and Protection Relay Trainer it is possible to assemble an absolute power transmission and distribution system. It is suitable for the teaching and skill training assessment of related majors in higher vocational schools, colleges, secondary vocational schools and technical schools.

1.2 Features

(1) The training platform adopts aluminum profile and sheet metal structure, which is fine in structure, easy to use and not easy to damage.

(2) The experimental circuit and device configuration are complete, and the training content of various courses is completed.

II. Performance Parameter

(1) Input power; AC380V±10%

(2) Dimensions: 1510mm×400mm×950mm

(3) Weight: <150kg

(4) Working conditions: ambient temperature -10℃～+40℃ relative humidity <85% (25℃)

III. Experiments to be Performed:

• Connection and study of the behaviour of a maximum current relay and short-circuit current relay in a three-phase network with different current values, verification of trip time
• Connections and study of the behaviour of a single-phase maximum or minimum current relay, verification of trip time for maximum and minimum current
• Connections and study of the behaviour of a maximum or minimum DC relay, verification of trip time for maximum and minimum current
• Connections and study of the behaviour of a maximum and minimum voltage relay in a three phase network with neutral, verification of trip time for maximum and minimum voltage
• Connections and study of the behaviour of a single-phase maximum or minimum voltage relay, verification of trip time for maximum and minimum voltage
• Connections and study of the behaviour of a maximum and minimum DC voltage relay and frequency relay, verification of trip time for maximum and minimum voltage
• Connections and study of the behaviour of a phase sequence and voltage asymmetry relay in a three-phase network, verification of its operation with wrong sequence and in non-asymmetric conditions or missing phase
• Connections and study of the behaviour of a maximum current directional relay in a three-phase

network, verification of its operation with reverse current flow and as directional of maximum earth current

• Use of auxiliary relays as interface of protection relays for controlling high power flows
• Use of auxiliary relays as interface for remote, optical/acoustic signalling of intervention of protection relays
• Use of timers with various time functions to increase the functionality of protection relays
• Determination of the transformation ratio of a TA with various primary currents and influence of load on the secondary winding, performance tests
• Connection of current transformers in three-phase networks
• Measurement of zero sequence current in a three-phase system
• Tests on a current step-up transformer
• Demonstration of the differential protection principle
• Determination of the transformation ratio of a TV with various primary voltages and influence of load on the secondary winding, performance tests
• Connections of voltage transformers in three-phase networks
• Connections of open-delta voltage transformers in three-phase networks

Installed Components of Protection Relay Module:

• The following set of modules should be installed for studying static protection relays and measuring transformers.
• 1 Module SR-1: 1 three-phase maximum current and short circuit relay, adjustment range 0.5-2A/1-16A ac, auxiliary power supply of 230V, 50Hz
• 1 Module SR-2: 1 single-phase maximum or minimum current relay, adjustment range 0.1-5A/5-25A ac/dc, auxiliary power supply of 230V, 50Hz
• 1 Module SR-3: 1 three-phase maximum and minimum voltage relay/N, adjustment range +10% / -15%, 380~400Vac, self-powered
• 1 Module SR-4: 1 single-phase maximum or minimum voltage relay, adjustment range 2~500V ac/dc, auxiliary power supply of 230V, 50Hz
• 1 Module SR-5: 1 maximum and minimum frequency relay, 50Hz, adjustment range +10%, selfpowered at 230Vac
• 1 Module SR-6: 1 phase sequence and voltage asymmetry relay for networks of 400V, asymmetry adjustment range: 5~15%, self-powered at 400Vac
• 1 Module SR-7: 1 auxiliary relay with 2 exchange contacts, driven by TTL/PLC signals/buttons of 24Vdc for excitation, stop, start
• 1 Module SR-8: 1 auxiliary relay with 2 exchange contacts, excitation 24Vdc, 1 optical acoustic indicator of 24V ac/dc
• 1 Module SR-9: 1 timer relay with 1 exchange contact, multi-function, multi-range, multi voltage, 24V ac/dc
• 1 Module SR-10: Directional over current relay, 5A – 400V, auxiliary power supply of 230Vac
• 1 Module SR-11: 3 wound-primary current transformers 10/5A, performance 3VA in cl. 0.5
• 1 Module SR-12: Voltage transformer 500/100V, performance 10VA in cl. 0.5
• 1 Module SR-13: 1 current step-up transformer 5 + 5 + 5/5A, performance 8VA in cl. 0.5
• Printed operation manual should be supplied
• It should be made in accordance with the latest European Union directives

Accessories to be Supplied:

• 1 box for modules of aluminum section and varnished sheet steel with transversal feet to lay on benches
• 2 digital autorange multimeters
• 1 desk-type three-phase rheostat 3 x 500 W, 3 x 50, for tests on current relays
• Set of 40 cables with safety terminals ø 4mm