36kV pole mounted metering unit OMW-36, JLSZXW1-36 type combined transformer

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36kV pole mounted metering unit OMW-36, JLSZXW1-36 type combined transformer

This metering unit is three-phase for outdoor installation. It consists of 3 sets of current transformer and 3 sets of voltage transformer. The instrument transformers are encapsulated in casting cycloaliphatic epoxy resin (CEP) with excellent insulation, and hydrophobic nature. Transformers surface is resistance to acid and alkali corrosion, pollution, and UV radiation. It is applied to connecting outdoor overhead line with utility company power system. The energy meter box is beneath mounting bracket and cross arm. The integrated assembled structure of MV and LV components has function of anti-theft electricity, and easy installation. This equipment is designed for distribution networks up to 36 kV for metering and measuring.

DESCRIPTION

OMW-36 (JLSZXW1-36)

Overhead pole mounted primary metering unit

1. Technical information

No.	item	units	specification
1.	Highest voltage for equipment Um (r.m.s.)	kV	36
2.	rated frequency	Hz	50, 60 or 50/60
3.	Rated lightning impulse withstand voltage (peak)	kV	170 kV, 200 kV
4.	Rated power-frequency withstand voltage on primary	kV	70
5.	Rated power-frequency withstand voltage on secondary	kV	3
6.	Number of CTs and VTs	pcs	3VT+3CT, 3VT+2CT
7.	Standard	/	IEC 61869-1:2007 \| IEC 61869-2:2012 IEC 61869-3:2011 \| IEC 61869-4:2013 IEEE(ANSI) C57.13-2016

2. Application

Pole mounted primary metering unit can meet the latest standards nationally and globally (IEC,IEEE(ANSI),CAN,GOST,CEF). It is connected with power distribution net three-phase cable for power metering management and automation system, to get primary metering more accurately. Thus, utility company will account power loss more effectively and increase revenue.

3. Features

1.1 Metering unit consists of 6 sets of single-phase instrument transformer (CT, VT quantity optional). Factory-assembled flexibly and easily. The energy meter box is beneath mounting bracket and cross arm. The integrated assembled structure of MV and LV components has function of anti-theft electricity. It is able to equipped with complete solution of mounting bracket and cross arm as client offered pole details.

1.2 Metering unit includes energy meter box, and factory-wired with instrument transformers before delivery. The box has space for energy meter and telecommunication module installation, and equipped with lock, door sensor, data DebugPort, transfer switch, lock sealable for anti-theft electricity and unwanted open;

1.3 Enclosure made from stainless steel or equivalent material, such as low carbon steel. Hermetically sealed design is waterproof. Enclosure surface coating power is anti-corrosion layer, for resistance to acid and alkali corrosion, and UV radiation;

1.4 Medium voltage combined transformer is encapsulated in casting epoxy resin. Transformers surface is resistance to acid and alkali corrosion, pollution, and UV radiation. With excellent dielectric and mechanical performance. No oil and no need maintenance, safety operation and environmentally friendly;

1.5 Current transformers are able to be designed with double ratio, and be shifted ratio via a transfer switch. Voltage transformers designed for anti-short-circuit and overload protection are available, in case of blast or any accidents caused by those.

1.6 Primary side connected through cable terminal to copper busbar. The terminal dimensions are optional as clients’ requirements. Surge arrester, and complete cross arm structure are optional.

4. Technical data

Current transformer specifications

No	Item	specification
1.	Rated primary current	5A up to 800A
2.	Rated secondary current	5A, 1A
3.	Rated Continuous Thermal Current	120%, 125%, 150%, 200%, etc.
4.	Rated Short time current (Ith) (thermal 1 second)	80xIpr, 100xIpr
5.	Rated Dynamic Current (Idyn)	2.5xIth
6.	Rated Output(VA)	5, 10, 12.5, 15, 20
7.	Accuracy Class	0.2S, 0.2, 0.5S, 0.5, 1 metering
8.	Instrument Security Factor (FS)	5, 10, 20
9.	Applicable Standard	IEC: 61869-1&2

Voltage transformer specifications

No	Item	specification
1.	Rated primary voltage(V)	33000/√3, 35000/√3, 20125, etc.
2.	Rated secondary voltage(V)	100/√3, 110/√3, 115/√3, 120/√3, 110, 115, 120
3.	Rated Voltage Factor	1.2/Continuous 1.5/30s, 1.9/30s, 1.9/8h 1.5/30s，1.9/30s，1.9/8h
4.	Standard connection	Y-Y connection
5.	Rated Output(VA)	10, 15, 20, 25, 30, 50, 75
6.	Accuracy Class	0.2, 0.5, 1,3 metering
7.	Thermal burden(VA)	500
8.	Applicable Standard	IEC: 61869-1&3