Analog display for resistance current

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1 Analog display for resistance current Operating Instructions BA /01

2 NOTE The product may have been modified after this document went to press. We expressly reserve the right to make changes to the technical data, the design or the scope of delivery. In general, the information provided and the arrangements agreed during processing of the relevant offers and orders are binding.

3 Table of Contents 1 Safety Explanation of safety labels Safety instructions Configuration/Types Principle and configuration Principle Configuration Connection Tap position indicator device, square version Tap position indicator device, rectangular version with separate measuring bridge Settings and adjustment Tap position indicator device, square version Tap position indicator device, rectangular version with separate measuring bridge Technical data Mechanical data Electrical data Accuracy under nominal conditions Ambient characteristics Regulations Annex Connection diagram of tap position indicator device with square front frame (897897:3M) Connection diagram of tap position indicator device with rectangular front frame (898105:3M) Dimension drawing of tap position indicator device with square front frame (899030:0M) Dimensional drawing ofpower supply unit with bridge circuit (898106:2M) The copying, distribution and utilization of this document as well as the communication of its contents to others without expressed authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration. Maschinenfabrik Reinhausen GmbH

5 1 Safety 1 Safety 1.1 Explanation of safety labels The following safety labels relating to the operation of the digital signal transfer unit for remote tap position indication are used in these Operating Instructions. These labels must be observed at all times! ATTENTION! Refers to a potentially hazardous situation that may result in damage to the product or adjacent equipment. NOTE Contains important information and special notes. NOTE! Risk of damage to the motor drive unit, on-load tap-changer and transformer! The signal transfer unit may only be used with the on-load tap-changer specified in the order. It is the responsibility of the user to make sure that the signal transfer unit is used for the specified application only. For safety reasons, any unauthorised work, i.e. installation, alteration, commissioning or modification of the signal transfer unit is forbidden without first consulting MR. 1.2 Safety instructions All warnings and safety instructions must be observed at all times! Failure to follow the safety instructions may lead to accidents and severe personal injury. Please read these operating instructions before commissioning the equipment! Read the Operating Instructions before commissioning the digital tap position indicator. As the operator, you are responsible for ensuring that users of the equipment have fully understood the operating and safety instructions. Train your staff! Before asking staff to work with the digital tap position indicator, provide training regarding general and special safety instructions and accident prevention regulations. Only suitably qualified personnel should work with the digital tap position indicator. The digital tap position indicator is designed exclusively for application in electrical or energy systems and facilities operated by appropriately trained staff i.e. staff who are familiar with the installation, assembly, commissioning and operation of such products. Maschinenfabrik Reinhausen GmbH

6 2 Configuration/Types 2 Configuration/Types For transformers where the transformer ratios are modified through on-load tap-changers with remote-controlled motor drives, the operating positions of the on-load tap-changer have to be displayed in the control room. The square tap position indicator instrument shown in drawing :3M is generally equipped with an integrated power supply unit. The rectangular tap position indicator instrument shown in drawing :3M is equipped with an additional power supply unit with bridge circuit according to drawing :2M. The devices can be mounted with the two screw spindles provided. Insert the screw spindle into the bracket from the rear of the device (plastic handle facing backwards) and turn it sideways to the first recess (for control panel thickness up to 20 mm) to the second recess (for control panel thickness mm). Fold in the screw spindle and push the device into the control panel cutout. Turn the screw spindle until it latches (90 angle relative to the device) and tighten it manually or with a small screwdriver. NOTE Before tightening the screw spindle carefully move it back and forth in order to ensure free movement. NOTE In a high-density installation the screw spindles can be mounted between the devices, since they are diagonally offset. The power supply unit is designed for top hat rail mounting according to DIN EN Maschinenfabrik Reinhausen GmbH 2007

7 3 Principle and configuration 3 Principle and configuration The tap position indicator instrument displays the current position of the motor drive or the on-load tap-changer at any location, usually in the control room. 3.1 Principle Each motor drive position corresponds to a contact area on the position transmitter board that is contacted by the slider. The contact areas are connected with the position transmitter module (resistor type) via the position transmitter cable. In the position transmitter module a modified resistance value is transferred to the input of a tap position indicator instrument, depending on the position. The display instrument operates with a resistance range of ohm. 3.2 Configuration In the motor drive unit a resistor-type position transmitter position transmitter is required. The resistor contact range (10 ohm per step) must match the number of required positions. The resistor module is connected with the display instrument or the power supply unit with bridge circuit via a signal line. 3.3 Connection ATTENTION! Before connecting the device ensure that the auxiliary voltage is within the range specified on the nameplate Tap position indicator device, square version Standard connection Connect the device according to the wiring diagram on the nameplate at the rear of the housing. The numbers in the wiring diagram match the numbers on the terminals. Terminals 1-3 potentiometer teletransmitter Terminals 4-7 auxiliary voltage A trim potentiometer for minimum scale value E trim potentiometer for full-scale value Extended setting range To extend the setting range for the minimum or full-scale value, set potentiometer R A or R E : Extended setting range for minimum scale value (zero elevation): calibration with potentiometer R A Extended setting range for full-scale value (full-scale value suppression): calibration with potentiometer R E R A : Trim potentiometer for extended minimum scale value range R E : Trim potentiometer for extended full-scale value range Tap position indicator device, rectangular version with separate measuring bridge Standard connection Connect the device according to the wiring diagram on the nameplate at the rear of the housing. The numbers in the wiring diagram match the numbers on the terminals. Terminals 1-3 potentiometer teletransmitter Terminals + and - switch position indicator Terminals 4-7 auxiliary voltage A trim potentiometer for minimum scale value E trim potentiometer for full-scale value Extended setting range To extend the setting range for the minimum or full-scale value, set potentiometer R A or R E : Extended setting range for minimum scale value (zero elevation): calibration with potentiometer R A Extended setting range for full-scale value (full-scale value suppression): calibration with potentiometer R E R A : Trim potentiometer for extended minimum scale value range R E : Trim potentiometer for extended full-scale value range 3.4 Settings and adjustment Tap position indicator device, square version Two balancing resistors are installed at the rear of the device for setting or adjusting parameters. The balancing resistors are used for setting the minimum and maximum scale values. Maschinenfabrik Reinhausen GmbH

8 3 Principle and configuration Calibration Check the connection Remove the caps for trim potentiometers E and A at the rear of the device. Apply auxiliary voltage Move the motor drive unit into the minimum switching position using the potentiometer teletransmitter. NOTE If the pointer points to maximum rather than minimum when the potentiometer teletransmitter is in its minimum position or vice versa, the potentiometer teletransmitter connecting cables 2 and 3 are reversed. In this case switch off the device and reverse connecting cables 2 and 3. Set the pointer of the switch position indicator to the minimum scale value with potentiometer A. Move the motor drive unit into the minimum switching position using the potentiometer teletransmitter. Set the pointer of the switch position indicator to the maximum scale value with potentiometer E. Repeat these steps and readjust the pointer deflections to match the minimum and maximum scale value. Re-install the caps for the trim potentiometers. NOTE If the pointer points to maximum rather than minimum when the potentiometer teletransmitter is in its minimum position or vice versa, the potentiometer teletransmitter connecting cables 2 and 3 are reversed. In this case switch off the device and reverse connecting cables 2 and 3. Set the pointer of the switch position indicator to the minimum scale value with potentiometer A. Move the motor drive unit into the minimum switching position using the potentiometer teletransmitter. Set the pointer of the switch position indicator to the maximum scale value with potentiometer E. Repeat these steps and readjust the pointer deflections to match the minimum and maximum scale value. Re-install the caps for the trim potentiometers Tap position indicator device, rectangular version with separate measuring bridge Two balancing resistors are installed at the front of the measuring bridge for setting or adjusting parameters. The balancing resistors are used for setting the minimum and maximum scale values. Calibration Check the connection Remove the caps for trim potentiometers E and A at the front of the measuring bridge. Apply auxiliary voltage Move the motor drive unit into the minimum switching position using the potentiometer teletransmitter. 8 Maschinenfabrik Reinhausen GmbH 2007

9 4 Technical data 4 Technical data 4.1 Mechanical data Type Casing for installation in control panels or machine consoles, modular Casing material Polycarbonate, self-extinguishing and non-dripping according to UL 94 V 0 Front screen Sheet glass Front frame colour black (similar to RAL 9005) Mounting position vertical ± 5 Fastening Screw spindle Installation High-density installation possible Control panel thickness <= 40 mm Connection Hex bolts with M4 and bolt clamp strap Wire section max. 2.5 mm² Display dimensions Square front frame with 72 x 72 mm bridge circuit 96 x 96 mm 144 x 144 mm Installation depth 120 mm (all models) Rectangular front frame 96 x 48 mm Installation depth 107 mm 144 x 72 mm Installation depth 192 mm Circuit board section 68 x 68 mm 92 x 92 mm 138 x 138 mm 92 x 45 mm 138 x 68 mm Dimensions of power supply 45 x 73 x 119 mm unit with bridge circuit Drawings :3M, :3M, :2M 4.2 Electrical data Measured variable DC Overload limit according to DIN EN Continuous 1.2 x max. 5 s 10 x Protection class II IP rating IP20 Insulation group A according to VDE 0110 Rated insulation voltage 1000 V Test voltage 3 kv at 50 Hz, 1 min. according to DIN Supply voltages V DC, V DC, V DC V DC, V DC, V DC V DC, V DC, V DC Maschinenfabrik Reinhausen GmbH

10 4 Technical data 4.3 Accuracy under nominal conditions Precision class 1.5 according to DIN EN Nominal conditions Ambient temperature 23 C ± 1 K Mounting position Nominal mounting position ± 1 Input variable Nominal measuring range Other DIN EN Influence factors Ambient temperature 10 C C Mounting position Nominal mounting position ± 5 Stray magnetic field 0.5 mt 4.4 Ambient characteristics Climate suitability Climate class 3 according to VDE/VDI 3540 Operating temperature -10 C C range Storage temperature range -25 C C Relative humidity <= 75% on average over the year, no condensation Impact resistance 15 g, 11 ms Vibration resistance 2.5 g, Hz 4.5 Regulations DIN DIN DIN DIN DIN DIN 57410/VDE 0410 DIN VDE 0110 VDE 0411 DIN VDE/VDI 3540 Sheet 2 Devices for flush mounting, nominal and section dimensions Electrical control panel measuring instruments Front-frames and front panels Line scales and pointers for electrical measuring instruments Nominal positions and position symbols used for measuring instruments Safety regulations for measuring instruments with display and recording function, and accesories Direct acting indicating analogue electricalmeasuring instruments and their accessories Regulations for determining clearances and creepage distances of electrical equipment Safety requirements for electronic measuring instruments Degrees of protection (IP-code); protection against foreign objects; water and contact; electrical equipment Reliability of measuring and control devices (climate classes for devices and accessories) 10 Maschinenfabrik Reinhausen GmbH 2007

11 5 Annex 5 Annex 5.1 Connection diagram of tap position indicator device with square front frame (897897:3M) Maschinenfabrik Reinhausen GmbH

12 5 Annex 5.2 Connection diagram of tap position indicator device with rectangular front frame (898105:3M) 12 Maschinenfabrik Reinhausen GmbH 2007

13 5 Annex 5.3 Dimension drawing of tap position indicator device with square front frame (899030:0M) Maschinenfabrik Reinhausen GmbH

14 5 Annex 5.4 Dimensional drawing ofpower supply unit with bridge circuit (898106:2M) 14 Maschinenfabrik Reinhausen GmbH 2007

15 5 Annex Maschinenfabrik Reinhausen GmbH

16 5 Annex 16 Maschinenfabrik Reinhausen GmbH 2007

18 Maschinenfabrik Reinhausen GmbH Tel: +49 (0) Falkensteinstrasse 8 Fax: +49 (0) D Regensburg sales@reinhausen.com 0310 F

Documentation KM2002, KM2004, KM2008. Terminal modules with digital outputs, 24 V, 0.5 A. Version: Date:

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