The Power in. Electrical Safety. Product presentation isohr685w-d/s-i-b. Updated: BENDER > isohr685 Mumtaz Farooqi

Transcription

1 The Power in Electrical Safety Product presentation isohr685w-d/s-i-b 1 Updated:

2 isohr685 content 1. IT systems and IMD 2. isohr Summary 2

3 IT system and Insulation Monitoring Device An IT (unearthed) system is used for high availability and safety systems e.g subsea umbilicals A first earth fault in IT system will not result in system shutdown, a 2 nd fault on different conductor will. An IMD continuously monitors the insulation resistance between the IT system and earth (PE) Optically signals a drop in insulation resistance below a minimum value Must comply with the requirements of the product standard for insulation monitoring devices IEC

4 Challenges in Umbilical Monitoring IMD, IR measurement range - typically 10/20MOhms Leakage capacitance Mixed networks AC+DC Measurement accuracy Compliance with standard IEC

5 isohr685 Insulation monitoring up to 1,000 VAC and 1,300 VDC (±15%) w/o AGH OVC III for <= 1,000 V OVC II for voltages > 1,000 V Measurement range 1 kω to 10 GΩ 2 different alarm values 1 kω to 3 GΩ Response time: dependent on profile Automatic adaption to capacitances up to 1,000 µf High resolution display for visualization of values and settings Measurement of U, f, C (U, f just for 690 VAC and 1,000 VDC) 5

6 Accuracy (U n = AC 690 V, f n = 50 Hz) Range < 10 MΩ 6

7 Accuracy (U n = AC 690 V, f n = 50 Hz) Range > 10 MΩ 7

8 isohr685 Wide range power supply AC/DC V (-20%...+15%) Free programmable digital inputs (3) and outputs (2) Free programmable analogue output (0 20mA, 4 20mA, 0-400µA, 0 10V, 2 10V) (10 kω 1 MΩ) Built-in webserver and data recording isodata Ambient temperature -40 C 55 C 8

9 isohr685 Monitoring Umbilicals up to 10 GΩ and to 150 µf: Insulation monitoring up to 1,500 VDC with OVC II Principle acc. to for AC, DC and AC/DC systems Monitoring of long parallel cables with new technology 9

10 Trending in high-ohmic area with integrated isograph 10

11 Monitoring long parallel cables simultaneously Coupling of both systems through capacitances IMDs are influencing themselves Solution: Synchronization of devices 11

12 Difference with and without synchronizing in 1 µf coupled system Synchronizing activated 12

13 Necessary connections and settings ISOsync has no limitations for the number of participants and works with synchronous time Time can be synchronized by the devices via BCOM OR Time can be synchronized by NTP Server (manual or DHCP) Switch NTP Server (optional) 13

14 Mastertitelformat bearbeiten Coupled systems with isohr685 Mastertextformat bearbeiten Zweite Ebene Dritte Ebene Vierte Ebene 2 devices can be controlled by a digital input. 1 potential free contact of the coupling contact is required. Just 690 VAC and 1,000 VDC Every isohr has an internal resistance of 50 MΩ approximate value

15 Mastertitelformat bearbeiten ISOnet with isohr685 via BCOM Mastertextformat bearbeiten Zweite Ebene Dritte Ebene Vierte Ebene 2 devices can control themselves if they are connected to each other via Ethernet. No Information of the coupling contact is required. Just 690 VAC and 1,000 VDC Every isohr has an internal resistance of 50 MΩ approximate value

16 Mastertitelformat bearbeiten ISOnet with isohr685 via BCOM Mastertextformat bearbeiten Zweite Ebene Dritte Ebene Vierte Ebene 2 up to 20 devices can control themselves via Ethernet. No information of the coupling switches necessary. They measure the systems one by one. Just 690 VAC and 1,000 VDC Every isohr has an internal resistance of 50 MΩ approximate value

17 As display and sensor variant available isohr685w-d-i-b Display Variant isohr685w-s-i-b + FP200W For new installations isohr685w-s-i-b + FP200W For retrofit installations IRDH375 For dimensions please refer to the documentation. 17

18 Summary isohr685 IT system used for high availability applications being tolerant to first earth fault IT system benefits and regulations require use of IMD isohr685 offers significant improvement on IR monitoring up to 10 GΩ Can be used in AC, DC and AC/DC systems Compliant to IEC (tripping also on symmetrical faults) Up to 1,000 VAC and 1,300 VDC Monitoring long parallel cables without cross influence ISOnet available for coupled systems Possibility for early insulation trending 18

19 Bender GmbH & Co. KG Londorfer Str Grünberg Pictures: Bender Archive, Subject to modification - Bender GmbH & Co. KG, Germany The presentation, its content, pictures and drawings are protected by copyright law. Duplication, translation, microfilming and transfer into any electronic systems, especially for commercial purposes is not allowed and subject to approval by the issuer. We do not assume any responsibility and liability for faulty or missing content. All data is based on manufacturers information. All logos and product descriptions are registered trademarks of the respective manufacturer. 19