MOVING-IRON VOLTMETERS with a change-over switch EP27 (72 x 72 mm) EP29 (96 x 96 mm) SERVICE MANUAL
MOVING-IRON VOLTMETERS with a change-over switch EP27 (72 x 72 mm) EP29 (96 x 96 mm) Contents: 1. Application............................................................... 4 2. Basic requirements, users safety........................... 4 3. Overall dimensions.................................................. 5 4. Installation in the panel and fastening of screw holders...................................................... 6 5. Accessories............................................................. 8 6.
1. APPLICATION The EP27 and EP29 moving-iron panel voltmeters with a change-over switch are adapted for measuring line-to-line and phase-to-phase RMS voltages in 3-phase 4-wire power networks. A six-positional switch installed on the meter frontal side enables the choice of the measured voltage in six different points of the network system. 2. BASIC REQUIREMENTS, USERS SAFETY These moving-iron voltmeters are destined to be installed on panels or switchboards.
3. OVERALL DIMENSIONS Narrow frontal frame according DIN 43718 Fig. 1. Overall dimensions of the EP27 voltmeter Fig. 2.
4. INSTALLATIOn in the panel and fastening of screw holders Fig. 3. Way of the EP27 voltmeter assembly on the panel. Fig. 4. Way of the EP29 voltmeter assembly on the panel.
One should prepare in the panel a hole at dimensions: 68+0.7 x 68+0.7 mm for the EP27 type 92+0.8 x 92+0.8 mm for the EP29 type. The thickness of the material of which the panel is made, cannot exceed 15mm. The meter is fixed on the panel by two screw holders situated freely on opposite corners of the case. The meter must be connected to the power network system according to the ordering code (see chapter 6 connection diagrams of external circuits).
5. ACCESSORIES We deliver together with the meter: - two screw holders to fix the meter on the panel, - a terminal cover (only for EP29 voltmeter), - a voltage transformer (on request, if ordered), - a service manual, - a guarantee certificate.
6.
1) Connections of EP29 voltmeters: a) Direct connection b) Connection through a voltage measuring transformer 10
7. TECHNICAL DATA • Frontal frame narrow, acc. DIN 43718 EP27 - 72 x 72 mm, EP29 - 96 x 96 mm • Accuracy class 1.5 • Measuring range: - for direct interfacial connection 500 V - at the position of the switch on L1-N, L2-N or L3-N 300 max - through a voltage transformer x/100 V or x/110 V • Working position given on the meter ± 5° (see table 1) • Panel material any • Power consumption ≤ 4.5 VA (Un = 500 V) • Rated operating conditions: acc. IEC-60051-1 - ambient temperature 5...23...
• Safety requirements - installation category acc. EN 61010-1:1999 and EN 61010-1/A2:1999 III - level of pollution 2 - maximal working voltage in relation to the earth 300 V a.c. • Protection grade: - case - terminals IP 50 IP 20 (with the terminal cover) • Electromagnetic compatibility: The EP27 and EP29 voltmeters fulfils CE mark requirements: - emission acc. EN50081-2 - immunity acc.
Category of climate executions If it is not stipulated in another way, these meters are destined to be applied in closed rooms, without air conditioning systems and in conditions of a moderate climate acc. IEC-60051-1 standard. On customers request, these meters can be adapted to be applied in dry or wet tropical climate conditions and also in closed rooms without air conditioning. Then, they are marked with the TIII symbol. 8.
9. ORDERING PROCEDURE AND CODING MOVING-IRON PANEL VOLTMETERS EP27 and EP29 TYPES - Climate version: tropical normal for climate zone N3 tropical for climate zone T3 Voltage range: acc. to the table 2 Working position: acc. to the table 1 Version: standard custom-made 1) Acceptance test: without additional requirements with a quality inspection certificate other requirements 2) 1) 2) X XXXX X XX X M N T XXXX X 00 XX 0 1 2 The number code is established by the producer.
Table 2 Measuring range CT Code CT Code CT Code 10 000/100V E703 10 000/110V E803 1 kV 1000/100V C700 7.5 kV 7500/100V C701 6000/100V C742 10 kV 6000/100V C702 6000/57.7V C752 15 kV 10 000/100V C703 15 000/100V E704 15 000/110V E804 17.5kV 15 000/100V C704 40 kV 30 000/100V E707 35 000/100V C707 30 000/110V E807 50 kV 50 000/100V C708 22 000/100V C722 20000/57.7V C756 150 000/100V E709 150 000/110V E809 110 000/100V E723 110 000/110V E823 E821 2.
10. MAINTENANCE The EP27 and EP29 voltmeters do not required any periodical maintenance. In case of some incorrect meter working one should to take it down from the panel and turn over to a certified service workshop. 1. In the period of 12 months from the date of purchase: One should take the meter down from the installation and return to the LUMELs Quality Control Dept. If the unit has been used in compliance with the instructions, LUMEL S.A. guarantees to repair it free of charge. 2.
Tel.: (48-68) 45 75 100 (exchange) Fax: (48-68) 45 75 508 e-mail:lumel@lumel.com.pl http://www.lumel.com.pl EP29-09.C Export Department: Tel.: (48-68) 45 75 302 Fax: (48-68) 32 54 091 e-mail: export@lumel.com.pl EP27-09.A LUMEL S.A. ul.
