The Insulation Expert UNILAP ISO 5 kV l Tests according to IEC 61557-2 l Insulation resistance 10 kW ... 30 TW l Measuring voltages 500-1000-2500-5000 V DC l Variable measuring voltages 250...5250 V DC in 50 V increments l Stair-step measuring voltage for insulation and surge-voltage protector test (MOV) l Voltage measurement 0 ... 600 V AC/DC l Guarding technique l Measuring current >1 mA l Software for acquisition and protocol printout (option) Description The most important functions and advantages are: - The construction and operation of electrical devices and installations require the compliance with certain safety precautions to protect man. These safety controls are laid down in national and international regulations and must be checked at regular intervals. All safety controls are always based on insulation resistance measurements. The requirements in practice vary a great deal, however. New regulations and increasing nominal mains voltages make ever greater demands on the measuring engineer and his test instruments. This has resulted an increasing number of areas of application for 5000 V insulation meters. The insulation measurement which, as such, is basically simple faces multiple types of applications. The insulation quality of materials and various objects also has to be tested for instance. Overvoltage suppressors or other voltage limiting elements also have to be tested for faultless functioning. Despite all these requirements simple operation, high overload capacity and protection against misoperation of the instrument must be guaranteed. The UNILAP ISO 5kV insulation tester is an expert for all insulation tests and their applications. The instrument meets highest technical requirements while covering as broad an area of application as possible and complies with all relevant regulations governing construction, safety and measurement. Other insulation meters in this category can, at best, provide an instrument with analog display whose size and weight do not meet the wishes of the users. The UNILAP ISO 5kV on the other hand features both an analog and a digital display and has been fitted in the well proven UNILAP housing. We have thus managed to realise the smallest and handiest 5kV insulation meter while complying with all the criteria laid down in IEC 1010. We used the most state-of-the-art technologies, such as microprocessor control and SMD components, for the construction. ELMES • HEME • NORMA - - - - Insulation resistance measurements with 250...5250 V DC from 10 kW to 30 TW. Fixed measuring voltages selectable via central switch: 500V – 1kV – 2.5kV – 5kV. Variable range from 250 V to 5250 V in 10 V and 50 V increments. Determination of polarisation index and dielectric absorption ratio. Polarisation index with freely programmable sampling times. Continuous measurements with freely selectable interval. Measurement of local insulation resistance with optionally available probe. Gradually increasing measuring voltage for insulation or overvoltage suppressor tests with selectable start-, stop- and breakdown-voltage, selectable number of voltage levels and duration per level. Free customer-specific configuration of basic settings via code programming: - display and setting of LIMITS with optical and acoustic warning in case of upper or lower limit violation (standard values are stored) - blocking of an undesirably high insulation measuring voltage. - default values for continuous measurements, overvoltage suppressor tests or polarisation index measurements with freely selectable sampling times can be stored. Fully automatic user guidance as protection against misoperation and damages. Automatic display of the external voltage prior to measurement and the voltage remaining applied after measurement. Quick reference within sight. With the optional (Docu-Pack or RS232) interface and the WINISO5kV application software remote control of all functions is possible. They can also be used for the individual configuration (code programming) of the instrument. Special accessories for measurements with GUARD technology or local insulation. Technical Data IP with progr. times: Riso General Display: 4-digit (2999), 7-segment-liquid-crystaldisplay, 16 mm high, with fluorescent illumination, 56-element analog scale for voltage and resistance ranges Working temp. range: –10° C… 50° C(14 ... 122 °F) Operating temp. range: 0° C… 35° C (32 ... 86 °F) Storage temp. range: –30° C… 60° C(-22 ...144 °F) Operating error: refering to the operating temperature range Climatic class: JWG as per DIN VDE 40040: Protection class: IP 40 as per DIN VDE 40050 Safety class: complies with protective class II - IEC 61010 and EN 61010 Test voltage: 6 kV Safety: 1000 V Cat. II, pollution degree 2 Quality standards: developed, designed and manufactured refering to DIN ISO 9001 Max. external voltage: for > 50 V measurements are locked Power supply: 12 V Nickel / Metalhydrid - Accu, 2.4 Ah Dimensions: 265 x 265 x 90 mm (LxBxH), 110 mm with DOCU-PACK Weight: approx. 2.4 kg incl. accumulators approx. 5.0 kg incl. accessories in case Insulation resistance (IEC 61557-2) Analog display: Range 10 kW …30TW Display 5kW ...1TW Resolution 5 kW ...200 GW O perati ng error*) ± 1 display segment Actual measuring voltage can be displayed. (* Measuring voltage = 1000 V; Measuring rate: approx. 3/s) Digital display: Rang e R e s o l u t i o n Nominal volt age O p e r at i n g e r ro r 10 kW … 299,9 GW 1k...0.1GW 250V…5250V ± (3% of reading + 3Dig) 0.30o1) TW … 2.99 TW 10 GW 1000V…5250V ± (3% of reading + 10Dig 3.0o 1)TW… 9.9 TW 0.1TW + 1 % / TW) 5250V 10.oo1) TW...29 TW 1 TW ±(3% of reading +100Dig+1%/GW) 1) o means: digit is always 0 Automatic discharging after insulation measurement. Time for discharging: 2.5 s for 1 µF Pre-set limit value: < 500 kW Nominal voltage: 250…5250 V DC variabel in steps of 50 V or 500 / 1000 / 2500 / 5000 V DC in fixed position Open circuit voltage: max. 1.15 x nominal voltage Measuring current: >1 mA DC at nominal voltage Short circuit current: < 2 mA DC Measuring rate: approx. 2 values/s Max. overload: 1,2 x nominal voltage (measurement will not be started) Ueff: 1000 V external voltage Buzzer: at external voltage more than 1000 V or at continuous tests with timer Interval measurement: adjustable from 10 s to 99:50 min Dielectric 1 min Absorption Ratio: Rad = RR after after 30 s Rad < 1.1 signifies bad insulation Ipt = Riso2 R after T2 R after T1 ; T1 and T2 are adjustable T1 ... 5 s to 1595 s T2 ... 10 s to 99:50 min Riso1 t T1 T2 Stair-step measuring voltage for insulation- and MOV-tests Programmable nominal voltage range: 50 ... 5250 V Ustart Programmable start voltage in % of Uad range: 1 ... 099 % Ustop Programmable stop voltage in % of Uad range: 100 ... 255 % N Programmable number of voltage steps range: 1 ... 255 Td Duration of each voltage step range: 10 ... 2550 s Uad Uiso Ustop Uad N Ustart t Td Voltage measurement with automatic AC/DC detection Digital display: Range 1… 600 V 1… 600 V Display range Resolution Frequency range Operating error 1…699 V AC 1V 45…400Hz ± (2% of mv + 1 Dig) 1…1000 V DC 1V DC ± (2% of mv + 1 Dig) Impedance: Max. overload: approx. 400 kW Ueff = 1000 V external voltage Order Codes Designation Order no. UNILAP ISO 5 kV in carrying case including 3 safety measuring leads with test tips, 2 m long 3 alligator clips, insulated 1 carrying belt 1 charging adapter 16 V / 0.3 A Operating instructions A 1865 06311 UNILAP ISO 5 kV, same as above with built-in RS 232 interface A 1865 06312 UNILAP ISO 5 kV, same as above with DOCU-PACK A 1865 06315 Accessories 3 safety measuring leads with test tips, 2 m long GUARD test lead set, 10 m GUARD test lead set, 2,5 m 3 alligator clips, insulated RS 232 interface (9-pole, Sub D) DOCU-PACK (incl. interface) WIN ISO, data acquisition and application software A 6003 14206 A 6045 10400 A 6045 10401 A 6009 17103 A 6412 10213 A 6412 10214 A 6899 00171 Distributor Rad > 1.25 signifies good insulation Polarization index: Ip = R after 10 min R after 1 min Ip < 1.5 signifies bad insulation Ip > 2 signifies good insulation Printed in Austria. Technical modifications reserved. Publication A 99429 E (03.99 · 5 · GD) LEM NORMA GmbH Palmersstraße 2 A-2351 Wiener Neudorf PHONE: +43(0)2236 691-0 FAX: +43(0)2236 63 080 E-mail: [email protected] LEM UK LTD Geneva Court, 1 Penketh Place, West Pimbo Skelmersdale, Lancashire WN8 9QX PHONE: 01695 - 720 777 FAX: 01695 - 507 04 E-mail: [email protected] LEM Instruments Inc. 23822 Hawthorne Boulevard #100 Torrance, CA 90505 PHONE: 1-310-373-0966 FAX: 1-310-373-9056 E-mail: [email protected]